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0001 <?xml version="1.0" ?>
0002 <!DOCTYPE book PUBLIC "-//KDE//DTD DocBook XML V4.5-Based Variant V1.1//EN" "dtd/kdedbx45.dtd" [
0003 
0004   <!ENTITY latex "L<superscript>A</superscript>T<subscript>E</subscript>X">
0005   <!ENTITY % addindex "IGNORE">
0006   <!ENTITY % English "INCLUDE">
0007 ]>
0008 <book id="cantor" lang="&language;">
0009 
0010 <bookinfo>
0011 <title>The &cantor; Handbook</title>
0012 
0013 <authorgroup>
0014 <author>
0015 <personname>
0016 <firstname>Alexander</firstname>
0017 <surname>Rieder</surname>
0018 </personname>
0019 <email>alexanderrieder@gmail.com</email>
0020 </author>
0021 <!-- TRANS:ROLES_OF_TRANSLATORS -->
0022 </authorgroup>
0023 
0024 <copyright>
0025 <year>2009</year>
0026 <holder>Alexander Rieder</holder>
0027 </copyright>
0028 <legalnotice>&FDLNotice;</legalnotice>
0029 
0030 <date>2020-12-16</date>
0031 <releaseinfo>Applications 20.12</releaseinfo>
0032 
0033 <abstract>
0034 <para>
0035 &cantor; is an application, aimed at providing a
0036 nice worksheet view to other Free Software Math packages.
0037 </para>
0038 </abstract>
0039 
0040 <keywordset>
0041 <keyword>KDE</keyword>
0042 <keyword>kdeedu</keyword>
0043 <keyword>mathematics</keyword>
0044 <keyword>math</keyword>
0045 <keyword>Cantor</keyword>
0046 <keyword>Julia</keyword>
0047 <keyword>Lua</keyword>
0048 <keyword>Maxima</keyword>
0049 <keyword>Octave</keyword>
0050 <keyword>Python</keyword>
0051 <keyword>Qalculate</keyword>
0052 <keyword>R</keyword>
0053 <keyword>Sage</keyword>
0054 <keyword>Scilab</keyword>
0055 </keywordset>
0056 
0057 </bookinfo>
0058 
0059 <chapter id="introduction">
0060 <title>Introduction</title>
0061 
0062 <para>
0063 &cantor; is an application to allow you to you use your favorite
0064 mathematical applications from within an elegant &kde;-integrated
0065 Worksheet Interface. It provides dialogs to assist with common tasks
0066 and allows you to share your worksheets with others.
0067 </para>
0068 </chapter>
0069 
0070 <chapter id="using-kapp">
0071 <title>Using &cantor;</title>
0072 
0073 <para>
0074 Screenshot:
0075 <screenshot>
0076 <screeninfo>Here is a screenshot of &cantor;</screeninfo>
0077         <mediaobject>
0078           <imageobject>
0079             <imagedata fileref="screenshot.png" format="PNG"/>
0080           </imageobject>
0081           <textobject>
0082             <phrase>Screenshot</phrase>
0083           </textobject>
0084         </mediaobject>
0085 </screenshot>
0086 </para>
0087 
0088 
0089 <sect1 id="kapp-features">
0090 <title>&cantor; features</title>
0091 <itemizedlist>
0092   <listitem><para>Intuitive worksheet view for evaluating expressions.</para></listitem>
0093   <listitem><para>Results of graph plotting shown inside the worksheet.</para></listitem>
0094   <listitem><para>Easy plugin-based structure to allow different backends to be added.</para></listitem>
0095   <listitem><para>GetHotNewStuff integration to allow example worksheets to be downloaded (or uploaded.)</para></listitem>
0096   <listitem><para>Mathematical formula typesetting using &latex;.</para></listitem>
0097   <listitem><para>Backend-aware syntax highlighting.</para></listitem>
0098   <listitem><para>Plugin-based assistant dialogs to help with common tasks, such as integrating a function, or entering a matrix.</para></listitem>
0099 </itemizedlist>
0100 </sect1>
0101 
0102 <sect1 id="backends">
0103 <title>The &cantor; backends</title>
0104 <para>
0105   &cantor; offers you several choices for the backends you wish to use with it.
0106   The choice to make depends on what you want to achieve.
0107 </para>
0108 <para>
0109   Currently the following backends are available:
0110   <variablelist>
0111     <varlistentry>
0112       <term>Sage:</term>
0113       <listitem>
0114         <para>
0115           Sage is a free open-source mathematics software system licensed under the GPL.
0116           It combines the power of many existing open-source packages, within a common Python-based interface.
0117           See <ulink url="https://sagemath.org">https://sagemath.org</ulink> for more information.
0118         </para>
0119         </listitem>
0120     </varlistentry>
0121     <varlistentry>
0122       <term>Maxima:</term>
0123       <listitem>
0124         <para>
0125           Maxima is a system for the manipulation of symbolic and numeric expressions,
0126           including differentiation, integration, Taylor series, Laplace transforms,
0127           ordinary differential equations, systems of linear equations, polynomials, sets,
0128           lists, vectors, matrices, and tensors. Maxima yields high-precision numeric results
0129           by using exact fractions, arbitrary precision integers, and variable precision
0130           floating point numbers. Maxima can plot functions and data in two and three dimensions.
0131           See <ulink url="http://maxima.sourceforge.net">http://maxima.sourceforge.net</ulink> for more information.
0132         </para>
0133       </listitem>
0134     </varlistentry>
0135     <varlistentry>
0136       <term>R:</term>
0137       <listitem>
0138         <para>
0139           R is a language and environment for statistical computing and graphics, similar to the S language and environment.
0140           It provides a wide variety of statistical (linear and nonlinear modelling,
0141           classical statistical tests, time-series analysis, classification, clustering, ...)
0142           and graphical techniques, and is highly extensible. The S language is often the
0143           vehicle of choice for research in statistical methodology,
0144           and R provides an open-source route to this.
0145           See <ulink url="https://www.r-project.org">https://www.r-project.org</ulink> for more information.
0146         </para>
0147       </listitem>
0148     </varlistentry>
0149     <varlistentry>
0150       <term>Julia:</term>
0151       <listitem>
0152         <para>
0153     Julia is a high-level, high-performance dynamic programming
0154     language for technical computing, with syntax that is familiar to users of
0155     other technical computing environments. It provides a sophisticated
0156     compiler, distributed parallel execution, numerical accuracy, and an
0157     extensive mathematical function library.
0158           See <ulink url="https://docs.julialang.org/en/">Julia documentation</ulink> for more information.
0159         </para>
0160       </listitem>
0161     </varlistentry>
0162     <varlistentry>
0163       <term>&kalgebra;:</term>
0164       <listitem>
0165         <para>
0166           &kalgebra; is a MathML-based graph calculator, that ships with &kde; Education project.
0167           See <ulink url="https://edu.kde.org/kalgebra/">https://edu.kde.org/kalgebra/</ulink> for more information.
0168           </para>
0169       </listitem>
0170     </varlistentry>
0171     <varlistentry>
0172       <term>Qalculate!:</term>
0173       <listitem>
0174   <para>
0175     Qalculate! is not your regular software replication of the cheapest
0176     available calculator. Qalculate! aims to make full use of the superior
0177     interface, power and flexibility of modern computers. The center of
0178     attention in Qalculate! is the expression entry. Instead of entering each
0179     number in a mathematical expression separately, you can directly write the
0180     whole expression and later modify it. The interpretation of expressions is
0181     flexible and fault tolerant, and if you nevertheless do something wrong,
0182     Qalculate! will tell you so. Not fully solvable expressions are however not
0183     errors. Qalculate! will simplify as far as it can and answer with an
0184     expression. In addition to numbers and arithmetic operators, an expression
0185     may contain any combination of variables, units, and functions.
0186     See <ulink url="https://qalculate.github.io/">https://qalculate.github.io/</ulink> for more information.
0187   </para>
0188   </listitem>
0189     </varlistentry>
0190     <varlistentry>
0191       <term>Python2 and Python3:</term>
0192       <listitem>
0193   <para>
0194     Python is a remarkably powerful dynamic programming language that is used
0195 in a wide variety of application domains. There are several Python packages
0196 to scientific programming.
0197   </para>
0198   <para>Python is distributed under Python Software Foundation license (GPL compatible).
0199     See the <ulink url="https://www.python.org/">official website</ulink> for more information.
0200   </para>
0201   <note>
0202     <para>
0203       This backend adds an additional item to the &cantor;'s main menu, <guimenu>Package</guimenu>. The only item of this menu is <menuchoice><guimenu>Package</guimenu><guimenuitem>Import Package</guimenuitem></menuchoice>. This item can be used to import Python packages to the worksheet.
0204     </para>
0205   </note>
0206     </listitem>
0207     </varlistentry>
0208     <varlistentry>
0209       <term>Scilab:</term>
0210       <listitem>
0211   <para>
0212     Scilab is an free software, cross-platform numerical computational package
0213     and a high-level, numerically oriented programming language.
0214   </para>
0215   <para>Scilab is distributed under CeCILL license (GPL compatible).
0216     See <ulink url="https://www.scilab.org/">https://www.scilab.org/</ulink> for more information.
0217   </para>
0218   <warning>
0219     <para>
0220       You need Scilab version 5.5 or higher to be installed in your system to make this backend usable.
0221     </para>
0222   </warning>
0223   </listitem>
0224     </varlistentry>
0225     <varlistentry>
0226       <term>Octave:</term>
0227       <listitem>
0228   <para>
0229     &GNU; Octave is a high-level language, primarily intended for numerical
0230     computations. It provides a convenient command line interface for
0231     solving linear and nonlinear problems numerically, and for performing other
0232     numerical experiments using a language that is mostly compatible with <ulink url="https://www.mathworks.com/products/matlab.html">MATLAB</ulink>.
0233     See <ulink url="https://www.gnu.org/software/octave/">https://www.gnu.org/software/octave/</ulink> for more information.
0234     </para>
0235       </listitem>
0236     </varlistentry>
0237     <varlistentry>
0238       <term>Lua:</term>
0239       <listitem>
0240   <para>
0241     Lua is a fast and lightweight scripting language, with a simple procedural syntax. There are several libraries in Lua aimed at math and science.
0242   </para>
0243   <para>
0244     See <ulink url="https://www.lua.org/">https://www.lua.org/</ulink> for more information.
0245   </para>
0246   <para>
0247     This backend supports <ulink url="https://luajit.org/">luajit 2</ulink>.
0248   </para>
0249       </listitem>
0250     </varlistentry>
0251   </variablelist>
0252 </para>
0253 </sect1>
0254 
0255 <sect1 id="workspace">
0256 <title>The &cantor; Workspace</title>
0257 <para>
0258 <screenshot>
0259   <screeninfo>Screenshot of the &cantor; Workspace</screeninfo>
0260   <mediaobject>
0261     <imageobject>
0262       <imagedata fileref="screenshot.png" format="PNG"/>
0263     </imageobject>
0264     <textobject>
0265       <phrase>Screenshot of the &cantor; Workspace</phrase>
0266     </textobject>
0267   </mediaobject>
0268 </screenshot>
0269 </para>
0270 <para>
0271   The Worksheet interface of &cantor; consists of three parts:
0272   <orderedlist>
0273     <listitem><para>The tab bar, where you can switch through the open worksheets.</para></listitem>
0274     <listitem><para>A help panel, where help for a specific command is displayed if you enter <userinput>?? <replaceable>command</replaceable></userinput>, <userinput>describe(<replaceable>command</replaceable>)</userinput> or <userinput>example(<replaceable>command</replaceable>)</userinput> (<application>Maxima</application> backend).</para></listitem>
0275     <listitem><para>A Variable Manager panel where you can see the list of all available variables on the current worksheet. The Help and Variable Manager panels are shown as tabs on a sidebar of a &cantor; window. Variable manager can be used for Maxima (if enabled on <menuchoice><guimenu>Settings</guimenu><guimenuitem>Configure &cantor;...</guimenuitem></menuchoice> <guilabel>Maxima</guilabel> page), &kalgebra;, Octave, Python2, Python3, Qalculate, and Scilab backends only.</para></listitem>
0276     <listitem><para>The worksheet itself.</para></listitem>
0277   </orderedlist>
0278 </para>
0279 <sect2 id="worksheet">
0280 <title>The Worksheet</title>
0281 <para>
0282   The worksheet is the basic area for working with &cantor;.  Using it, you can enter
0283   expressions, allow the backend to perform calculations, and look at the results.
0284   The commands the worksheets accept depend on the chosen backend, so you should
0285   learn the appropriate backend syntax (the <guibutton>Show Help</guibutton> button takes you there directly).
0286   If you know the command, but you need additional information, you can type "? <replaceable>command</replaceable>",
0287   and contextual help will appear on the right of the worksheet.
0288   If you want to see some example worksheets, you can go to <menuchoice><guimenu>File</guimenu><guimenuitem>Download Example Worksheets</guimenuitem></menuchoice> menu item, and download worksheets other users have published.
0289 </para>
0290 <para>
0291   To control each command entry of the worksheet you can use control buttons shown at the right part of the worksheet when hovering the entry field with a mouse cursor. There are three basic actions for each entry: <guilabel>Evaluate Entry</guilabel> to update the result of calculations for the entry, <guilabel>Drag Entry</guilabel> to move the entry at the other place of the current worksheet and <guilabel>Remove Entry</guilabel> to remove the entry from the current worksheet.
0292 </para>
0293 <para>
0294   Font settings and alignment of worksheet entries can be changed using a toolbar above the worksheet.
0295 </para>
0296 <sect3 id="worksheet-settings">
0297   <title>Settings</title>
0298   <para>
0299     The <guimenu>Settings</guimenu> menu allows you to change some settings of the appearance of your
0300     current worksheet.
0301   </para>
0302   <variablelist>
0303     <varlistentry>
0304       <term>Typeset using LaTeX</term>
0305       <listitem>
0306         <para>
0307           This setting changes the way results are presented to you. If enabled, it passes the result through
0308           the &latex; system, to produce visually appealing formulas. For example, <quote>3*x^2*sqrt(2)*x+2/3</quote> becomes
0309           <inlinemediaobject>
0310               <imageobject>
0311                 <imagedata fileref="latex_formula.png" format="PNG"/>
0312               </imageobject>
0313               <textobject><phrase>3*x^2*sqrt(2)*x+2/3</phrase></textobject>
0314           </inlinemediaobject>
0315         </para>
0316       </listitem>
0317     </varlistentry>
0318     <varlistentry>
0319       <term>Syntax Highlighting</term>
0320       <listitem>
0321         <para>
0322           Syntax Highlighting increases the readability of code, by highlighting
0323           keywords, or matching brackets in different colors.
0324         </para>
0325       </listitem>
0326     </varlistentry>
0327     <varlistentry>
0328       <term>Completion</term>
0329       <listitem>
0330         <para>
0331           When this is enabled, &cantor; will show you possible completions
0332           for the command you are currently typing when you press the Tab-key. If there is only one choice
0333           remaining, it will insert the rest of the command for you.
0334         </para>
0335       </listitem>
0336     </varlistentry>
0337   <varlistentry>
0338     <term>Line Numbers</term>
0339     <listitem>
0340       <para>
0341         This setting controls whether the different expressions should have a number in front.  This allows you
0342         to recall older results - in Maxima, for instance, this is done with the <quote>%O1</quote> command.
0343       </para>
0344     </listitem>
0345   </varlistentry>
0346   <varlistentry>
0347     <term>Animate Worksheet</term>
0348     <listitem>
0349       <para>
0350   This setting controls whether the different animations will be used to highlight changes on a worksheet.
0351       </para>
0352     </listitem>
0353   </varlistentry>
0354   <varlistentry>
0355     <term>Embedded Math</term>
0356     <listitem>
0357       <para>
0358   This setting controls whether rendering math expressions inside <literal>$$..$$</literal> in Text and &Markdown; entries is enabled by default (needs <application>pdflatex</application> installed).
0359       </para>
0360     </listitem>
0361   </varlistentry>
0362   </variablelist>
0363 </sect3>
0364 </sect2>
0365 </sect1>
0366 <sect1 id="assistant-dlgs">
0367 <title>The assistant dialogs</title>
0368 <para>
0369 There are several assistant dialogs implemented in &cantor; to alleviate some basic operations.
0370 </para>
0371 <para>
0372 These dialogs can be accessed using the main menu items. Each backend has its own assistant dialogs.
0373 </para>
0374 <sect2 id="create-matrix-dlg">
0375 <title>The Create Matrix dialog</title>
0376 <screenshot>
0377   <screeninfo>Screenshot of the &cantor; matrix creation dialog</screeninfo>
0378   <mediaobject>
0379     <imageobject>
0380       <imagedata fileref="create-dlg.png" format="PNG"/>
0381     </imageobject>
0382     <textobject>
0383       <phrase>Screenshot of the &cantor; matrix creation dialog</phrase>
0384     </textobject>
0385   </mediaobject>
0386 </screenshot>
0387 <para>
0388 This dialog can be used to input matrices. You can define matrix dimensions and its elements.
0389 </para>
0390 <para>
0391 It is possible to navigate between cells quickly during input using the &Tab; key.
0392 </para>
0393 </sect2>
0394 <sect2 id="compute-invert-dlg">
0395 <title>Matrix operation dialog</title>
0396 <screenshot>
0397   <screeninfo>Screenshot of the &cantor; matrix input dialog</screeninfo>
0398   <mediaobject>
0399     <imageobject>
0400       <imagedata fileref="matrix-dlg.png" format="PNG"/>
0401     </imageobject>
0402     <textobject>
0403       <phrase>Screenshot of the &cantor; matrix input dialog</phrase>
0404     </textobject>
0405   </mediaobject>
0406 </screenshot>
0407 <para>
0408 This dialog allows entering name of the matrix to compute its eigenvectors, eigenvalues or invert matrix. The default value (<userinput>%</userinput>) is used to refer to the previous result of calculation or input.
0409 </para>
0410 </sect2>
0411 <sect2 id="calculate-derivative-dlg">
0412 <title>Differentiation dialog</title>
0413 <screenshot>
0414   <screeninfo>Screenshot of the &cantor; differentiation dialog</screeninfo>
0415   <mediaobject>
0416     <imageobject>
0417       <imagedata fileref="differentiate-dlg.png" format="PNG"/>
0418     </imageobject>
0419     <textobject>
0420       <phrase>Screenshot of the &cantor; differentiation dialog</phrase>
0421     </textobject>
0422   </mediaobject>
0423 </screenshot>
0424 <para>
0425 This dialog allows entering expression of the function to differentiate, the name of the variable and the order of derivative.
0426 </para>
0427 </sect2>
0428 <sect2 id="calculate-integral-dlg">
0429 <title>Integration dialog</title>
0430 <screenshot>
0431   <screeninfo>Screenshot of the &cantor; integration dialog</screeninfo>
0432   <mediaobject>
0433     <imageobject>
0434       <imagedata fileref="integrate-dlg.png" format="PNG"/>
0435     </imageobject>
0436     <textobject>
0437       <phrase>Screenshot of the &cantor; integration dialog</phrase>
0438     </textobject>
0439   </mediaobject>
0440 </screenshot>
0441 <para>
0442 This dialog allows entering expression of the function to integrate, the name of the variable and the limits of integration (for the definite integral).
0443 </para>
0444 </sect2>
0445 <sect2 id="calculate-solve-dlg">
0446 <title>Solve equations dialog</title>
0447 <screenshot>
0448   <screeninfo>Screenshot of the &cantor; solve equation dialog</screeninfo>
0449   <mediaobject>
0450     <imageobject>
0451       <imagedata fileref="solve-equations-dlg.png" format="PNG"/>
0452     </imageobject>
0453     <textobject>
0454       <phrase>Screenshot of the &cantor; solve equation dialog</phrase>
0455     </textobject>
0456   </mediaobject>
0457 </screenshot>
0458 <para>
0459 This dialog allows entering equations to solve (each equation in a separate line) and the variables to determine (separated by the comma).
0460 </para>
0461 </sect2>
0462 <sect2 id="package-import-dlg">
0463 <title>Package import dialog</title>
0464 <screenshot>
0465   <screeninfo>Screenshot of the &cantor; package import dialog</screeninfo>
0466   <mediaobject>
0467     <imageobject>
0468       <imagedata fileref="import-dlg.png" format="PNG"/>
0469     </imageobject>
0470     <textobject>
0471       <phrase>Screenshot of the &cantor; package import dialog</phrase>
0472     </textobject>
0473   </mediaobject>
0474 </screenshot>
0475 <para>
0476 This dialog allows entering name of the package to import (&eg; <userinput>numpy</userinput> for Python).
0477 </para>
0478 </sect2>
0479 <sect2 id="plot-dlg">
0480 <title>Plot dialog</title>
0481 <screenshot>
0482   <screeninfo>Screenshot of the &cantor; plot dialog (Functions tab)</screeninfo>
0483   <mediaobject>
0484     <imageobject>
0485       <imagedata fileref="plot-dlg1.png" format="PNG"/>
0486     </imageobject>
0487     <textobject>
0488       <phrase>Screenshot of the &cantor; plot dialog (Functions tab)</phrase>
0489     </textobject>
0490   </mediaobject>
0491 </screenshot>
0492 <para>
0493 The options of this dialog are separated into two groups using tabs. The <guilabel>Functions</guilabel> tab allows entering functions to plot.
0494 </para>
0495 <para>
0496 To enter new function click on the <guibutton>Add</guibutton>. Double-click on the <guilabel>Title</guilabel> cell and enter the title, then double-click on the <guilabel>Expression</guilabel> cell and enter the function expression.
0497 </para>
0498 <screenshot>
0499   <screeninfo>Screenshot of the &cantor; plot dialog (Options tab)</screeninfo>
0500   <mediaobject>
0501     <imageobject>
0502       <imagedata fileref="plot-dlg2.png" format="PNG"/>
0503     </imageobject>
0504     <textobject>
0505       <phrase>Screenshot of the &cantor; plot dialog (Options tab)</phrase>
0506     </textobject>
0507   </mediaobject>
0508 </screenshot>
0509 <para>
0510 The <guilabel>Options</guilabel> tab is used to define plot and legend options. You can fine-tune almost every plot option to obtain the pleasant look of your figure.
0511 </para>
0512 </sect2>
0513 <sect2 id="plot2d-dlg">
0514 <title>Plot 2D dialog</title>
0515 <screenshot>
0516   <screeninfo>Screenshot of the &cantor; plot 2D dialog</screeninfo>
0517   <mediaobject>
0518     <imageobject>
0519       <imagedata fileref="plot2d-dlg.png" format="PNG"/>
0520     </imageobject>
0521     <textobject>
0522       <phrase>Screenshot of the &cantor; plot 2D dialog</phrase>
0523     </textobject>
0524   </mediaobject>
0525 </screenshot>
0526 <para>
0527 This dialog allows entering expression of the function, its variable and the limits for this variable.
0528 </para>
0529 </sect2>
0530 <sect2 id="plot3d-dlg">
0531 <title>Plot 3D dialog</title>
0532 <screenshot>
0533   <screeninfo>Screenshot of the &cantor; plot 3D dialog</screeninfo>
0534   <mediaobject>
0535     <imageobject>
0536       <imagedata fileref="plot3d-dlg.png" format="PNG"/>
0537     </imageobject>
0538     <textobject>
0539       <phrase>Screenshot of the &cantor; plot 3D dialog</phrase>
0540     </textobject>
0541   </mediaobject>
0542 </screenshot>
0543 <para>
0544 This dialog allows entering expression of the function, its variables and the limits for each variable.
0545 </para>
0546 </sect2>
0547 </sect1>
0548 </chapter>
0549 
0550 <chapter id="commands">
0551 <title>Command Reference</title>
0552 
0553 <sect1 id="kapp-mainwindow">
0554 <title>The main &cantor; window</title>
0555 
0556 <para>
0557 &cantor; has the common &kde; menu items, for more information read the <ulink url="help:/fundamentals/menus.html"
0558 >Menu</ulink> chapter of the &kde; Fundamentals.
0559 </para>
0560 
0561 <para>Below is the list of the additional or special menu items in &cantor;. Please note that some menus are only shown for backends that have corresponding implementation.
0562 </para>
0563 
0564 <sect2 id="file-menu">
0565 <title>The File Menu</title>
0566 <para>
0567 <variablelist>
0568 <varlistentry>
0569 <term><menuchoice>
0570 <shortcut>
0571 <keycombo action="simul">&Ctrl;<keycap>N</keycap></keycombo>
0572 </shortcut>
0573 <guimenu>File</guimenu>
0574 <guimenuitem>New</guimenuitem>
0575 </menuchoice></term>
0576 <listitem><para><action>Creates a new worksheet with the default backend.</action></para></listitem>
0577 </varlistentry>
0578 <varlistentry>
0579 <term><menuchoice>
0580 <guimenu>File</guimenu>
0581 <guisubmenu>New</guisubmenu>
0582 <guimenuitem><replaceable>Backend</replaceable></guimenuitem>
0583 </menuchoice></term>
0584 <listitem><para><action>Creates a new worksheet with the chosen backend.</action></para></listitem>
0585 </varlistentry>
0586 <varlistentry>
0587 <term><menuchoice>
0588 <shortcut>
0589 <keycombo action="simul">&Ctrl;<keycap>O</keycap></keycombo>
0590 </shortcut>
0591 <guimenu>File</guimenu>
0592 <guimenuitem>Open...</guimenuitem>
0593 </menuchoice></term>
0594 <listitem><para><action>Open a supported new worksheet with the file dialog.</action></para></listitem>
0595 </varlistentry>
0596 <varlistentry>
0597 <term><menuchoice>
0598 <guimenu>File</guimenu>
0599 <guisubmenu>Open Recent</guisubmenu>
0600 </menuchoice></term>
0601 <listitem><para><action>Choose a worksheet from a list of recently used files.</action></para></listitem>
0602 </varlistentry>
0603 <varlistentry>
0604 <term><menuchoice>
0605 <guimenu>File</guimenu>
0606 <guimenuitem>Download Example Worksheets</guimenuitem>
0607 </menuchoice></term>
0608 <listitem><para><action>Opens the dialog to download examples uploaded by other &cantor; users with
0609  <ulink url="https://userbase.kde.org/Special:MyLanguage/Glossary#Get_Hot_New_Stuff">GetHotNewStuff</ulink>.</action></para></listitem>
0610 </varlistentry>
0611 <varlistentry>
0612 <term><menuchoice>
0613 <guimenu>File</guimenu>
0614 <guimenuitem>Open Example</guimenuitem>
0615 </menuchoice></term>
0616 <listitem><para><action>Opens the dialog to choose an example to load.</action> The examples should be downloaded with <menuchoice><guimenu>File</guimenu>
0617 <guimenuitem>Download Example Worksheets</guimenuitem></menuchoice> beforehand.</para></listitem>
0618 </varlistentry>
0619 <varlistentry>
0620 <term><menuchoice>
0621 <guimenu>File</guimenu>
0622 <guimenuitem>Save Plain Text</guimenuitem>
0623 </menuchoice></term>
0624 <listitem><para><action>Allows saving the current worksheet as a plain text document.</action></para></listitem>
0625 </varlistentry>
0626 <varlistentry>
0627 <term><menuchoice>
0628 <guimenu>File</guimenu>
0629 <guimenuitem>Export to LaTeX</guimenuitem>
0630 </menuchoice></term>
0631 <listitem><para><action>Allows saving the current worksheet as a &latex; document.</action></para></listitem>
0632 </varlistentry>
0633 <varlistentry>
0634 <term><menuchoice>
0635 <guimenu>File</guimenu>
0636 <guimenuitem>Publish Worksheet</guimenuitem>
0637 </menuchoice></term>
0638 <listitem><para><action>Opens the dialog to publish your current worksheet and make it available to other &cantor; users through
0639  <ulink url="https://userbase.kde.org/Special:MyLanguage/Glossary#Get_Hot_New_Stuff">GetHotNewStuff</ulink>.</action></para></listitem>
0640 </varlistentry>
0641 <varlistentry>
0642 <term><menuchoice>
0643 <guimenu>File</guimenu>
0644 <guimenuitem>Run Script</guimenuitem>
0645 </menuchoice></term>
0646 <listitem><para><action>Allows to load and run the batch scripts for the current backend.</action></para></listitem>
0647 </varlistentry>
0648 </variablelist>
0649 </para>
0650 
0651 </sect2>
0652 
0653 <sect2 id="view-menu">
0654 <title>The View Menu</title>
0655 <para>
0656 <variablelist>
0657 <varlistentry>
0658 <term><menuchoice><guimenu>View</guimenu><guisubmenu>Panels</guisubmenu></menuchoice></term>
0659 <listitem><para>Allows you to toggle the visibility of some tabs in the sidebar. Choices are:
0660 <variablelist>
0661   <varlistentry>
0662   <term><guimenuitem>File Browser</guimenuitem></term>
0663   <listitem><para><action>Toggles</action> the visibility of the <guilabel>File Browser</guilabel> tab in the sidebar.</para></listitem>
0664   </varlistentry>
0665 
0666   <varlistentry>
0667   <term><guimenuitem>Help</guimenuitem></term>
0668   <listitem><para><action>Toggles</action> the visibility of the <guilabel>Help</guilabel> tab in the sidebar.</para></listitem>
0669   </varlistentry>
0670 
0671   <varlistentry>
0672   <term><guimenuitem>Variable Manager</guimenuitem></term>
0673   <listitem><para><action>Toggles</action> the visibility of the <guilabel>Variable Manager</guilabel> tab in the sidebar.</para></listitem>
0674   </varlistentry>
0675 </variablelist></para></listitem>
0676 </varlistentry>
0677 <varlistentry>
0678 <term><menuchoice>
0679 <shortcut>
0680 <keycombo action="simul">&Ctrl;<keycap>+</keycap></keycombo>
0681 </shortcut>
0682 <guimenu>View</guimenu>
0683 <guimenuitem>Zoom In</guimenuitem>
0684 </menuchoice></term>
0685 <listitem><para><action>Zoom in</action> the current worksheet by 10%.</para></listitem>
0686 </varlistentry>
0687 <varlistentry>
0688 <term><menuchoice>
0689 <shortcut>
0690 <keycombo action="simul">&Ctrl;<keycap>-</keycap></keycombo>
0691 </shortcut>
0692 <guimenu>View</guimenu>
0693 <guimenuitem>Zoom Out</guimenuitem>
0694 </menuchoice></term>
0695 <listitem><para><action>Zoom out</action> the current worksheet by 10%.</para></listitem>
0696 </varlistentry>
0697 <varlistentry>
0698 <term><menuchoice>
0699 <guimenu>View</guimenu>
0700 <guimenuitem>Show Script Editor</guimenuitem>
0701 </menuchoice></term>
0702 <listitem><para><action>Opens the batch script editor window for the current backend.</action></para></listitem>
0703 </varlistentry>
0704 </variablelist>
0705 </para>
0706 </sect2>
0707 
0708 <sect2 id="worsheet-menu">
0709 <title>The Worksheet Menu</title>
0710 <para>
0711 <variablelist>
0712 <varlistentry>
0713 <term><menuchoice>
0714 <shortcut>
0715 <keycombo action="simul">&Ctrl;<keycap>E</keycap></keycombo>
0716 </shortcut>
0717 <guimenu>Worksheet</guimenu>
0718 <guimenuitem>Evaluate Worksheet</guimenuitem>
0719 </menuchoice></term>
0720 <listitem><para><action>Triggers</action> the evaluation of the whole worksheet.</para></listitem>
0721 </varlistentry>
0722 <varlistentry>
0723 <term><menuchoice>
0724 <shortcut>
0725 <keycombo action="simul">&Shift;&Enter;</keycombo>
0726 </shortcut>
0727 <guimenu>Worksheet</guimenu>
0728 <guimenuitem>Evaluate Entry</guimenuitem>
0729 </menuchoice></term>
0730 <listitem><para><action>Triggers</action> the current entry evaluation.</para></listitem>
0731 </varlistentry>
0732 <varlistentry>
0733 <term><menuchoice>
0734 <shortcut>
0735 <keycombo action="simul">&Ctrl;&Enter;</keycombo>
0736 </shortcut>
0737 <guimenu>Worksheet</guimenu>
0738 <guimenuitem>Insert Command Entry</guimenuitem>
0739 </menuchoice></term>
0740 <listitem><para><action>Inserts a new command entry below the current cursor position.</action></para></listitem>
0741 </varlistentry>
0742 <varlistentry>
0743 <term><menuchoice>
0744 <guimenu>Worksheet</guimenu>
0745 <guimenuitem>Insert Text Entry</guimenuitem>
0746 </menuchoice></term>
0747 <listitem><para><action>Inserts a new text entry below the current cursor position.</action></para></listitem>
0748 </varlistentry>
0749 <varlistentry>
0750 <term><menuchoice>
0751 <guimenu>Worksheet</guimenu>
0752 <guimenuitem>Insert Markdown Entry</guimenuitem>
0753 </menuchoice></term>
0754 <listitem><para><action>Inserts a &Markdown; entry below the current cursor position.</action>.</para></listitem>
0755 </varlistentry>
0756 <varlistentry>
0757 <term><menuchoice>
0758 <guimenu>Worksheet</guimenu>
0759 <guimenuitem>Insert LaTeX Entry</guimenuitem>
0760 </menuchoice></term>
0761 <listitem><para><action>Inserts a &latex; entry below the current cursor position.</action>.</para></listitem>
0762 </varlistentry>
0763 <varlistentry>
0764 <term><menuchoice>
0765 <guimenu>Worksheet</guimenu>
0766 <guimenuitem>Insert Image</guimenuitem>
0767 </menuchoice></term>
0768 <listitem><para><action>Inserts an image below the current cursor position.</action></para></listitem>
0769 </varlistentry>
0770 <varlistentry>
0771 <term><menuchoice>
0772 <guimenu>Worksheet</guimenu>
0773 <guimenuitem>Insert Page Break</guimenuitem>
0774 </menuchoice></term>
0775 <listitem><para><action>Inserts the page break below the current cursor position.</action></para></listitem>
0776 </varlistentry>
0777 <varlistentry>
0778 <term><menuchoice>
0779 <guimenu>Worksheet</guimenu>
0780 <guimenuitem>Collapse All Results</guimenuitem>
0781 </menuchoice></term>
0782 <listitem><para><action>Collapse all results of the command entry.</action></para></listitem>
0783 </varlistentry>
0784 <varlistentry>
0785 <term><menuchoice>
0786 <guimenu>Worksheet</guimenu>
0787 <guimenuitem>Expand All Results</guimenuitem>
0788 </menuchoice></term>
0789 <listitem><para><action>Expand all results of the command entry.</action></para></listitem>
0790 </varlistentry>
0791 <varlistentry>
0792 <term><menuchoice>
0793 <guimenu>Worksheet</guimenu>
0794 <guimenuitem>Remove All Results</guimenuitem>
0795 </menuchoice></term>
0796 <listitem><para><action>Remove all results of the command entry.</action></para></listitem>
0797 </varlistentry>
0798 <varlistentry>
0799 <term><menuchoice>
0800 <shortcut>
0801 <keycombo action="simul">&Shift;&Del;</keycombo>
0802 </shortcut>
0803 <guimenu>Worksheet</guimenu>
0804 <guimenuitem>Remove current Entry</guimenuitem>
0805 </menuchoice></term>
0806 <listitem><para><action>Removes</action> current entry from the worksheet.</para></listitem>
0807 </varlistentry>
0808 </variablelist>
0809 </para>
0810 </sect2>
0811 
0812 <sect2 id="linear-algebra-menu">
0813 <title>The Linear Algebra Menu</title>
0814 <para>
0815 <variablelist>
0816 <varlistentry>
0817 <term><menuchoice>
0818 <guimenu>Linear Algebra</guimenu>
0819 <guimenuitem>Create Matrix</guimenuitem>
0820 </menuchoice></term>
0821 <listitem><para><action>Opens</action> the <link linkend="create-matrix-dlg">matrix creation assistant dialog</link>.</para></listitem>
0822 </varlistentry>
0823 <varlistentry>
0824 <term><menuchoice>
0825 <guimenu>Linear Algebra</guimenu>
0826 <guimenuitem>Compute Eigenvalues</guimenuitem>
0827 </menuchoice></term>
0828 <listitem><para><action>Opens</action> the <link linkend="compute-invert-dlg">matrix name input assistant dialog</link> to compute its eigenvalues and dimensions of the multiplicities of the eigenvalues in the corresponding order.
0829 </para></listitem>
0830 </varlistentry>
0831 <varlistentry>
0832 <term><menuchoice>
0833 <guimenu>Linear Algebra</guimenu>
0834 <guimenuitem>Compute Eigenvectors</guimenuitem>
0835 </menuchoice></term>
0836 <listitem><para><action>Opens</action> the <link linkend="compute-invert-dlg">matrix name input assistant dialog</link> to compute its eigenvalues, dimensions of the multiplicities of the eigenvalues and eigenvectors in the corresponding order.
0837 </para></listitem>
0838 </varlistentry>
0839 <varlistentry>
0840 <term><menuchoice>
0841 <guimenu>Linear Algebra</guimenu>
0842 <guimenuitem>Invert Matrix</guimenuitem>
0843 </menuchoice></term>
0844 <listitem><para><action>Opens</action> the <link linkend="compute-invert-dlg">matrix name input assistant dialog</link> to find the inverse of the matrix.
0845 </para></listitem>
0846 </varlistentry>
0847 </variablelist>
0848 </para>
0849 </sect2>
0850 
0851 <sect2 id="calculate-menu">
0852 <title>The Calculate Menu</title>
0853 <para>
0854 <variablelist>
0855 <varlistentry>
0856 <term><menuchoice>
0857 <guimenu>Calculate</guimenu>
0858 <guimenuitem>Differentiate</guimenuitem>
0859 </menuchoice></term>
0860 <listitem><para><action>Opens</action> the <link linkend="calculate-derivative-dlg">differentiation parameters dialog</link>.
0861 </para></listitem>
0862 </varlistentry>
0863 <varlistentry>
0864 <term><menuchoice>
0865 <guimenu>Calculate</guimenu>
0866 <guimenuitem>Integrate</guimenuitem>
0867 </menuchoice></term>
0868 <listitem><para><action>Opens</action> the <link linkend="calculate-integral-dlg">integration parameters dialog</link>.
0869 </para></listitem>
0870 </varlistentry>
0871 <varlistentry>
0872 <term><menuchoice>
0873 <guimenu>Calculate</guimenu>
0874 <guimenuitem>Solve equations</guimenuitem>
0875 </menuchoice></term>
0876 <listitem><para><action>Opens</action> the <link linkend="calculate-solve-dlg">parameters input dialog</link> to solve linear and non-linear equations.
0877 </para></listitem>
0878 </varlistentry>
0879 </variablelist>
0880 </para>
0881 </sect2>
0882 
0883 <sect2 id="package-menu">
0884 <title>The Package Menu</title>
0885 <para>
0886 <variablelist>
0887 <varlistentry>
0888 <term><menuchoice>
0889 <guimenu>Package</guimenu>
0890 <guimenuitem>Import Package</guimenuitem>
0891 </menuchoice></term>
0892 <listitem><para><action>Opens</action> the <link linkend="package-import-dlg">package import dialog</link>.
0893 </para></listitem>
0894 </varlistentry>
0895 </variablelist>
0896 </para>
0897 </sect2>
0898 
0899 <sect2 id="plot-menu">
0900 <title>The Plot Menu</title>
0901 <para>
0902 <variablelist>
0903 <varlistentry>
0904 <term><menuchoice>
0905 <guimenu>Plot</guimenu>
0906 <guimenuitem>Plot</guimenuitem>
0907 </menuchoice></term>
0908 <listitem><para><action>Opens</action> the <link linkend="plot-dlg">plot parameters dialog</link>.
0909 </para></listitem>
0910 </varlistentry>
0911 <varlistentry>
0912 <term><menuchoice>
0913 <guimenu>Plot</guimenu>
0914 <guimenuitem>Plot 2D</guimenuitem>
0915 </menuchoice></term>
0916 <listitem><para><action>Opens</action> the <link linkend="plot2d-dlg">plot parameters dialog</link>.
0917 </para></listitem>
0918 </varlistentry>
0919 <varlistentry>
0920 <term><menuchoice>
0921 <guimenu>Plot</guimenu>
0922 <guimenuitem>Plot 3D</guimenuitem>
0923 </menuchoice></term>
0924 <listitem><para><action>Opens</action> the <link linkend="plot3d-dlg">plot parameters dialog</link>.
0925 </para></listitem>
0926 </varlistentry>
0927 </variablelist>
0928 </para>
0929 </sect2>
0930 
0931 <sect2 id="settings-help-menu">
0932 <title>The Settings and Help Menu</title>
0933 <para>
0934 &cantor; has the common &kde; <guimenu>Settings</guimenu> and <guimenu>Help</guimenu>
0935 menu items, for more information read the sections about the <ulink
0936 url="help:/fundamentals/menus.html#menus-settings">Settings Menu</ulink> and
0937 <ulink url="help:/fundamentals/menus.html#menus-help">Help Menu</ulink>
0938 of the &kde; Fundamentals.
0939 </para>
0940 
0941 </sect2>
0942 
0943 </sect1>
0944 </chapter>
0945 
0946 <chapter id="faq">
0947 <title>Questions and Answers</title>
0948 
0949 <qandaset id="faqlist">
0950 <qandaentry>
0951   <question><para>The Menu Item <guimenuitem>Typeset using LaTeX</guimenuitem> is not available</para></question>
0952   <answer><para>Not every backend supports every option. Current version supports &latex; output for Maxima, Qalculate! and Sage backends.</para></answer>
0953 </qandaentry>
0954 <qandaentry>
0955   <question><para>I have installed Sage/Maxima or other supported CAS, but the appropriate backend does not appear.</para></question>
0956   <answer>
0957     <para>
0958       One possible explanation is that &cantor; did not correctly detect the location. Go to the <menuchoice><guimenu>Settings</guimenu><guimenuitem>Configure &cantor;...</guimenuitem></menuchoice> dialog and change
0959       the <guilabel>Path</guilabel> to the appropriate application on the backend's page.
0960     </para>
0961   </answer>
0962 </qandaentry>
0963 <qandaentry>
0964   <question><para>What a peculiar name - what does it have to do with mathematics?</para></question>
0965   <answer><para>&cantor; is named after the German mathematician <ulink url="https://en.wikipedia.org/wiki/Georg_Cantor">Georg Cantor</ulink>, the creator of set theory.</para></answer>
0966 </qandaentry>
0967 </qandaset>
0968 </chapter>
0969 
0970 <chapter id="credits">
0971 
0972 <title>Credits and License</title>
0973 
0974 <para>
0975 &cantor;
0976 </para>
0977 <para>
0978 Program copyright 2009-2011 Alexander Rieder <email>alexanderrieder@gmail.com</email>
0979 </para>
0980 
0981 <para>
0982 Documentation Copyright &copy; 2009-2011 Alexander Rieder <email>alexanderrieder@gmail.com</email>
0983 </para>
0984 
0985 <!-- TRANS:CREDIT_FOR_TRANSLATORS -->
0986 
0987 &underFDL;               <!-- FDL: do not remove -->
0988 &underGPL;               <!-- GPL License -->
0989 </chapter>
0990 
0991 &documentation.index;
0992 </book>
0993 
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1002 
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