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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>2023-11-29</date> 0031 <releaseinfo>Applications 23.08</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>statistics</keyword> 0046 <keyword>Cantor</keyword> 0047 <keyword>Julia</keyword> 0048 <keyword>Lua</keyword> 0049 <keyword>Maxima</keyword> 0050 <keyword>Octave</keyword> 0051 <keyword>Python</keyword> 0052 <keyword>Qalculate</keyword> 0053 <keyword>R</keyword> 0054 <keyword>Sage</keyword> 0055 <keyword>Scilab</keyword> 0056 </keywordset> 0057 0058 </bookinfo> 0059 0060 <chapter id="introduction"> 0061 <title>Introduction</title> 0062 0063 <para> 0064 &cantor; is an application to allow you to you use your favorite 0065 mathematical applications from within an elegant &kde;-integrated 0066 Worksheet Interface. It provides dialogs to assist with common tasks 0067 and allows you to share your worksheets with others. 0068 </para> 0069 </chapter> 0070 0071 <chapter id="using-kapp"> 0072 <title>Using &cantor;</title> 0073 0074 <para> 0075 Screenshot: 0076 <screenshot> 0077 <screeninfo>Here is a screenshot of &cantor;</screeninfo> 0078 <mediaobject> 0079 <imageobject> 0080 <imagedata fileref="screenshot.png" format="PNG"/> 0081 </imageobject> 0082 <textobject> 0083 <phrase>Screenshot</phrase> 0084 </textobject> 0085 </mediaobject> 0086 </screenshot> 0087 </para> 0088 0089 0090 <sect1 id="kapp-features"> 0091 <title>&cantor; features</title> 0092 <itemizedlist> 0093 <listitem><para>Intuitive worksheet view for evaluating expressions.</para></listitem> 0094 <listitem><para>Results of graph plotting shown inside the worksheet.</para></listitem> 0095 <listitem><para>Easy plugin-based structure to allow different backends to be added.</para></listitem> 0096 <listitem><para>GetHotNewStuff integration to allow example worksheets to be downloaded (or uploaded).</para></listitem> 0097 <listitem><para>Mathematical formula typesetting using &latex;.</para></listitem> 0098 <listitem><para>Backend-aware syntax highlighting.</para></listitem> 0099 <listitem><para>Plugin-based assistant dialogs to help with common tasks, such as integrating a function, or entering a matrix.</para></listitem> 0100 </itemizedlist> 0101 </sect1> 0102 0103 <sect1 id="backends"> 0104 <title>The &cantor; backends</title> 0105 <para> 0106 &cantor; offers you several choices for the backends you wish to use with it. 0107 The choice to make depends on what you want to achieve. 0108 </para> 0109 <para> 0110 Currently the following backends are available: 0111 <variablelist> 0112 <varlistentry> 0113 <term>Sage:</term> 0114 <listitem> 0115 <para> 0116 Sage is a free open-source mathematics software system licensed under the GPL. 0117 It combines the power of many existing open-source packages, within a common Python-based interface. 0118 See <ulink url="https://sagemath.org">https://sagemath.org</ulink> for more information. 0119 </para> 0120 </listitem> 0121 </varlistentry> 0122 <varlistentry> 0123 <term>Maxima:</term> 0124 <listitem> 0125 <para> 0126 Maxima is a system for the manipulation of symbolic and numeric expressions, 0127 including differentiation, integration, Taylor series, Laplace transforms, 0128 ordinary differential equations, systems of linear equations, polynomials, sets, 0129 lists, vectors, matrices, and tensors. Maxima yields high-precision numeric results 0130 by using exact fractions, arbitrary precision integers, and variable precision 0131 floating point numbers. Maxima can plot functions and data in two and three dimensions. 0132 See <ulink url="http://maxima.sourceforge.net">http://maxima.sourceforge.net</ulink> for more information. 0133 </para> 0134 </listitem> 0135 </varlistentry> 0136 <varlistentry> 0137 <term>R:</term> 0138 <listitem> 0139 <para> 0140 R is a language and environment for statistical computing and graphics, similar to the S language and environment. 0141 It provides a wide variety of statistical (linear and nonlinear modelling, 0142 classical statistical tests, time-series analysis, classification, clustering, data science, ...) 0143 and graphical techniques, and is highly extensible. The S language is often the 0144 vehicle of choice for research in statistical methodology, 0145 and R provides an open-source route to this. 0146 See <ulink url="https://www.r-project.org">https://www.r-project.org</ulink> for more information. 0147 </para> 0148 </listitem> 0149 </varlistentry> 0150 <varlistentry> 0151 <term>Julia:</term> 0152 <listitem> 0153 <para> 0154 Julia is a high-level, high-performance, general-purpose dynamic programming 0155 language for technical computing, with syntax that is familiar to users of 0156 other technical computing environments. It provides a sophisticated 0157 compiler, distributed parallel execution, numerical accuracy, and an 0158 extensive mathematical function library. 0159 See <ulink url="https://julialang.org/">Julia website</ulink> for more information. 0160 </para> 0161 </listitem> 0162 </varlistentry> 0163 <varlistentry> 0164 <term>&kalgebra;:</term> 0165 <listitem> 0166 <para> 0167 &kalgebra; is a MathML-based graph calculator, that ships with &kde; Education project. 0168 See <ulink url="https://edu.kde.org/kalgebra/">https://edu.kde.org/kalgebra/</ulink> for more information. 0169 </para> 0170 </listitem> 0171 </varlistentry> 0172 <varlistentry> 0173 <term>Qalculate!:</term> 0174 <listitem> 0175 <para> 0176 Qalculate! is not your regular software replication of the cheapest 0177 available calculator. Qalculate! aims to make full use of the superior 0178 interface, power and flexibility of modern computers. The center of 0179 attention in Qalculate! is the expression entry. Instead of entering each 0180 number in a mathematical expression separately, you can directly write the 0181 whole expression and later modify it. The interpretation of expressions is 0182 flexible and fault tolerant, and if you nevertheless do something wrong, 0183 Qalculate! will tell you so. Not fully solvable expressions are however not 0184 errors. Qalculate! will simplify as far as it can and answer with an 0185 expression. In addition to numbers and arithmetic operators, an expression 0186 may contain any combination of variables, units, and functions. 0187 See <ulink url="https://qalculate.github.io/">https://qalculate.github.io/</ulink> for more information. 0188 </para> 0189 </listitem> 0190 </varlistentry> 0191 <varlistentry> 0192 <term>Python2 and Python3:</term> 0193 <listitem> 0194 <para> 0195 Python is a remarkably powerful dynamic programming language that is used 0196 in a wide variety of application domains. There are several Python packages 0197 to scientific programming. 0198 </para> 0199 <para>Python is distributed under Python Software Foundation license (GPL compatible). 0200 See the <ulink url="https://www.python.org/">official website</ulink> for more information. 0201 </para> 0202 <note> 0203 <para> 0204 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. 0205 </para> 0206 </note> 0207 </listitem> 0208 </varlistentry> 0209 <varlistentry> 0210 <term>Scilab:</term> 0211 <listitem> 0212 <para> 0213 Scilab is an free software, cross-platform numerical computational package 0214 and a high-level, numerically oriented programming language. 0215 </para> 0216 <para>Scilab is distributed under CeCILL license (GPL compatible). 0217 See <ulink url="https://www.scilab.org/">https://www.scilab.org/</ulink> for more information. 0218 </para> 0219 <warning> 0220 <para> 0221 You need Scilab version 5.5 or higher to be installed in your system to make this backend usable. 0222 </para> 0223 </warning> 0224 </listitem> 0225 </varlistentry> 0226 <varlistentry> 0227 <term>Octave:</term> 0228 <listitem> 0229 <para> 0230 &GNU; Octave is a high-level language, primarily intended for numerical 0231 computations. It provides a convenient command line interface for 0232 solving linear and nonlinear problems numerically, and for performing other 0233 numerical experiments using a language that is mostly compatible with <ulink url="https://www.mathworks.com/products/matlab.html">MATLAB</ulink>. 0234 See <ulink url="https://octave.org/">https://octave.org/</ulink> for more information. 0235 </para> 0236 </listitem> 0237 </varlistentry> 0238 <varlistentry> 0239 <term>Lua:</term> 0240 <listitem> 0241 <para> 0242 Lua is a fast and lightweight scripting language, with a simple procedural syntax. There are several libraries in Lua aimed at math and science. 0243 </para> 0244 <para> 0245 See <ulink url="https://www.lua.org/">https://www.lua.org/</ulink> for more information. 0246 </para> 0247 <para> 0248 This backend supports <ulink url="https://luajit.org/">LuaJIT 2</ulink>. 0249 </para> 0250 </listitem> 0251 </varlistentry> 0252 </variablelist> 0253 </para> 0254 </sect1> 0255 0256 <sect1 id="workspace"> 0257 <title>The &cantor; Workspace</title> 0258 <para> 0259 <screenshot> 0260 <screeninfo>Screenshot of the &cantor; Workspace</screeninfo> 0261 <mediaobject> 0262 <imageobject> 0263 <imagedata fileref="screenshot.png" format="PNG"/> 0264 </imageobject> 0265 <textobject> 0266 <phrase>Screenshot of the &cantor; Workspace</phrase> 0267 </textobject> 0268 </mediaobject> 0269 </screenshot> 0270 </para> 0271 <para> 0272 The Worksheet interface of &cantor; consists of three parts: 0273 <orderedlist> 0274 <listitem><para>The tab bar, where you can switch through the open worksheets.</para></listitem> 0275 <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> 0276 <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> 0277 <listitem><para>The worksheet itself.</para></listitem> 0278 </orderedlist> 0279 </para> 0280 <sect2 id="worksheet"> 0281 <title>The Worksheet</title> 0282 <para> 0283 The worksheet is the basic area for working with &cantor;. Using it, you can enter 0284 expressions, allow the backend to perform calculations, and look at the results. 0285 The commands the worksheets accept depend on the chosen backend, so you should 0286 learn the appropriate backend syntax (the <guibutton>Show Help</guibutton> button takes you there directly). 0287 If you know the command, but you need additional information, you can type "? <replaceable>command</replaceable>", 0288 and contextual help will appear on the right of the worksheet. 0289 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. 0290 </para> 0291 <para> 0292 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. 0293 </para> 0294 <para> 0295 Font settings and alignment of worksheet entries can be changed using a toolbar above the worksheet. 0296 </para> 0297 <sect3 id="worksheet-settings"> 0298 <title>Settings</title> 0299 <para> 0300 The <guimenu>Settings</guimenu> menu allows you to change some settings of the appearance of your 0301 current worksheet. 0302 </para> 0303 <variablelist> 0304 <varlistentry> 0305 <term>Typeset using LaTeX</term> 0306 <listitem> 0307 <para> 0308 This setting changes the way results are presented to you. If enabled, it passes the result through 0309 the &latex; system, to produce visually appealing formulas. For example, <quote>3*x^2*sqrt(2)*x+2/3</quote> becomes 0310 <inlinemediaobject> 0311 <imageobject> 0312 <imagedata fileref="latex_formula.png" format="PNG"/> 0313 </imageobject> 0314 <textobject><phrase>3*x^2*sqrt(2)*x+2/3</phrase></textobject> 0315 </inlinemediaobject> 0316 </para> 0317 </listitem> 0318 </varlistentry> 0319 <varlistentry> 0320 <term>Syntax Highlighting</term> 0321 <listitem> 0322 <para> 0323 Syntax Highlighting increases the readability of code, by highlighting 0324 keywords, or matching brackets in different colors. 0325 </para> 0326 </listitem> 0327 </varlistentry> 0328 <varlistentry> 0329 <term>Completion</term> 0330 <listitem> 0331 <para> 0332 When this is enabled, &cantor; will show you possible completions 0333 for the command you are currently typing when you press the Tab-key. If there is only one choice 0334 remaining, it will insert the rest of the command for you. 0335 </para> 0336 </listitem> 0337 </varlistentry> 0338 <varlistentry> 0339 <term>Line Numbers</term> 0340 <listitem> 0341 <para> 0342 This setting controls whether the different expressions should have a number in front. This allows you 0343 to recall older results - in Maxima, for instance, this is done with the <quote>%O1</quote> command. 0344 </para> 0345 </listitem> 0346 </varlistentry> 0347 <varlistentry> 0348 <term>Animate Worksheet</term> 0349 <listitem> 0350 <para> 0351 This setting controls whether the different animations will be used to highlight changes on a worksheet. 0352 </para> 0353 </listitem> 0354 </varlistentry> 0355 <varlistentry> 0356 <term>Embedded Math</term> 0357 <listitem> 0358 <para> 0359 This setting controls whether rendering math expressions inside <literal>$$..$$</literal> in Text and &Markdown; entries is enabled by default (needs <application>pdflatex</application> installed). 0360 </para> 0361 </listitem> 0362 </varlistentry> 0363 </variablelist> 0364 </sect3> 0365 </sect2> 0366 </sect1> 0367 <sect1 id="assistant-dlgs"> 0368 <title>The assistant dialogs</title> 0369 <para> 0370 There are several assistant dialogs implemented in &cantor; to alleviate some basic operations. 0371 </para> 0372 <para> 0373 These dialogs can be accessed using the main menu items. Each backend has its own assistant dialogs. 0374 </para> 0375 <sect2 id="create-matrix-dlg"> 0376 <title>The Create Matrix dialog</title> 0377 <screenshot> 0378 <screeninfo>Screenshot of the &cantor; matrix creation dialog</screeninfo> 0379 <mediaobject> 0380 <imageobject> 0381 <imagedata fileref="create-dlg.png" format="PNG"/> 0382 </imageobject> 0383 <textobject> 0384 <phrase>Screenshot of the &cantor; matrix creation dialog</phrase> 0385 </textobject> 0386 </mediaobject> 0387 </screenshot> 0388 <para> 0389 This dialog can be used to input matrices. You can define matrix dimensions and its elements. 0390 </para> 0391 <para> 0392 It is possible to navigate between cells quickly during input using the 	 key. 0393 </para> 0394 </sect2> 0395 <sect2 id="compute-invert-dlg"> 0396 <title>Matrix operation dialog</title> 0397 <screenshot> 0398 <screeninfo>Screenshot of the &cantor; matrix input dialog</screeninfo> 0399 <mediaobject> 0400 <imageobject> 0401 <imagedata fileref="matrix-dlg.png" format="PNG"/> 0402 </imageobject> 0403 <textobject> 0404 <phrase>Screenshot of the &cantor; matrix input dialog</phrase> 0405 </textobject> 0406 </mediaobject> 0407 </screenshot> 0408 <para> 0409 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. 0410 </para> 0411 </sect2> 0412 <sect2 id="calculate-derivative-dlg"> 0413 <title>Differentiation dialog</title> 0414 <screenshot> 0415 <screeninfo>Screenshot of the &cantor; differentiation dialog</screeninfo> 0416 <mediaobject> 0417 <imageobject> 0418 <imagedata fileref="differentiate-dlg.png" format="PNG"/> 0419 </imageobject> 0420 <textobject> 0421 <phrase>Screenshot of the &cantor; differentiation dialog</phrase> 0422 </textobject> 0423 </mediaobject> 0424 </screenshot> 0425 <para> 0426 This dialog allows entering expression of the function to differentiate, the name of the variable and the order of derivative. 0427 </para> 0428 </sect2> 0429 <sect2 id="calculate-integral-dlg"> 0430 <title>Integration dialog</title> 0431 <screenshot> 0432 <screeninfo>Screenshot of the &cantor; integration dialog</screeninfo> 0433 <mediaobject> 0434 <imageobject> 0435 <imagedata fileref="integrate-dlg.png" format="PNG"/> 0436 </imageobject> 0437 <textobject> 0438 <phrase>Screenshot of the &cantor; integration dialog</phrase> 0439 </textobject> 0440 </mediaobject> 0441 </screenshot> 0442 <para> 0443 This dialog allows entering expression of the function to integrate, the name of the variable and the limits of integration (for the definite integral). 0444 </para> 0445 </sect2> 0446 <sect2 id="calculate-solve-dlg"> 0447 <title>Solve equations dialog</title> 0448 <screenshot> 0449 <screeninfo>Screenshot of the &cantor; solve equation dialog</screeninfo> 0450 <mediaobject> 0451 <imageobject> 0452 <imagedata fileref="solve-equations-dlg.png" format="PNG"/> 0453 </imageobject> 0454 <textobject> 0455 <phrase>Screenshot of the &cantor; solve equation dialog</phrase> 0456 </textobject> 0457 </mediaobject> 0458 </screenshot> 0459 <para> 0460 This dialog allows entering equations to solve (each equation in a separate line) and the variables to determine (separated by the comma). 0461 </para> 0462 </sect2> 0463 <sect2 id="package-import-dlg"> 0464 <title>Package import dialog</title> 0465 <screenshot> 0466 <screeninfo>Screenshot of the &cantor; package import dialog</screeninfo> 0467 <mediaobject> 0468 <imageobject> 0469 <imagedata fileref="import-dlg.png" format="PNG"/> 0470 </imageobject> 0471 <textobject> 0472 <phrase>Screenshot of the &cantor; package import dialog</phrase> 0473 </textobject> 0474 </mediaobject> 0475 </screenshot> 0476 <para> 0477 This dialog allows entering name of the package to import (⪚ <userinput>numpy</userinput> for Python). 0478 </para> 0479 </sect2> 0480 <sect2 id="plot-dlg"> 0481 <title>Plot dialog</title> 0482 <screenshot> 0483 <screeninfo>Screenshot of the &cantor; plot dialog (Functions tab)</screeninfo> 0484 <mediaobject> 0485 <imageobject> 0486 <imagedata fileref="plot-dlg1.png" format="PNG"/> 0487 </imageobject> 0488 <textobject> 0489 <phrase>Screenshot of the &cantor; plot dialog (Functions tab)</phrase> 0490 </textobject> 0491 </mediaobject> 0492 </screenshot> 0493 <para> 0494 The options of this dialog are separated into two groups using tabs. The <guilabel>Functions</guilabel> tab allows entering functions to plot. 0495 </para> 0496 <para> 0497 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. 0498 </para> 0499 <screenshot> 0500 <screeninfo>Screenshot of the &cantor; plot dialog (Options tab)</screeninfo> 0501 <mediaobject> 0502 <imageobject> 0503 <imagedata fileref="plot-dlg2.png" format="PNG"/> 0504 </imageobject> 0505 <textobject> 0506 <phrase>Screenshot of the &cantor; plot dialog (Options tab)</phrase> 0507 </textobject> 0508 </mediaobject> 0509 </screenshot> 0510 <para> 0511 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. 0512 </para> 0513 </sect2> 0514 <sect2 id="plot2d-dlg"> 0515 <title>Plot 2D dialog</title> 0516 <screenshot> 0517 <screeninfo>Screenshot of the &cantor; plot 2D dialog</screeninfo> 0518 <mediaobject> 0519 <imageobject> 0520 <imagedata fileref="plot2d-dlg.png" format="PNG"/> 0521 </imageobject> 0522 <textobject> 0523 <phrase>Screenshot of the &cantor; plot 2D dialog</phrase> 0524 </textobject> 0525 </mediaobject> 0526 </screenshot> 0527 <para> 0528 This dialog allows entering expression of the function, its variable and the limits for this variable. 0529 </para> 0530 </sect2> 0531 <sect2 id="plot3d-dlg"> 0532 <title>Plot 3D dialog</title> 0533 <screenshot> 0534 <screeninfo>Screenshot of the &cantor; plot 3D dialog</screeninfo> 0535 <mediaobject> 0536 <imageobject> 0537 <imagedata fileref="plot3d-dlg.png" format="PNG"/> 0538 </imageobject> 0539 <textobject> 0540 <phrase>Screenshot of the &cantor; plot 3D dialog</phrase> 0541 </textobject> 0542 </mediaobject> 0543 </screenshot> 0544 <para> 0545 This dialog allows entering expression of the function, its variables and the limits for each variable. 0546 </para> 0547 </sect2> 0548 </sect1> 0549 </chapter> 0550 0551 <chapter id="commands"> 0552 <title>Command Reference</title> 0553 0554 <sect1 id="kapp-mainwindow"> 0555 <title>The main &cantor; window</title> 0556 0557 <para> 0558 &cantor; has the common &kde; menu items, for more information read the <ulink url="help:/fundamentals/menus.html" 0559 >Menu</ulink> chapter of the &kde; Fundamentals. 0560 </para> 0561 0562 <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. 0563 </para> 0564 0565 <sect2 id="file-menu"> 0566 <title>The File Menu</title> 0567 <para> 0568 <variablelist> 0569 <varlistentry> 0570 <term><menuchoice> 0571 <shortcut> 0572 <keycombo action="simul">&Ctrl;<keycap>N</keycap></keycombo> 0573 </shortcut> 0574 <guimenu>File</guimenu> 0575 <guimenuitem>New</guimenuitem> 0576 </menuchoice></term> 0577 <listitem><para><action>Creates a new worksheet with the default backend.</action></para></listitem> 0578 </varlistentry> 0579 <varlistentry> 0580 <term><menuchoice> 0581 <guimenu>File</guimenu> 0582 <guisubmenu>New</guisubmenu> 0583 <guimenuitem><replaceable>Backend</replaceable></guimenuitem> 0584 </menuchoice></term> 0585 <listitem><para><action>Creates a new worksheet with the chosen backend.</action></para></listitem> 0586 </varlistentry> 0587 <varlistentry> 0588 <term><menuchoice> 0589 <shortcut> 0590 <keycombo action="simul">&Ctrl;<keycap>O</keycap></keycombo> 0591 </shortcut> 0592 <guimenu>File</guimenu> 0593 <guimenuitem>Open...</guimenuitem> 0594 </menuchoice></term> 0595 <listitem><para><action>Open a supported new worksheet with the file dialog.</action></para></listitem> 0596 </varlistentry> 0597 <varlistentry> 0598 <term><menuchoice> 0599 <guimenu>File</guimenu> 0600 <guisubmenu>Open Recent</guisubmenu> 0601 </menuchoice></term> 0602 <listitem><para><action>Choose a worksheet from a list of recently used files.</action></para></listitem> 0603 </varlistentry> 0604 <varlistentry> 0605 <term><menuchoice> 0606 <guimenu>File</guimenu> 0607 <guimenuitem>Download Example Worksheets</guimenuitem> 0608 </menuchoice></term> 0609 <listitem><para><action>Opens the dialog to download examples uploaded by other &cantor; users with 0610 <ulink url="https://userbase.kde.org/Special:MyLanguage/Glossary#Get_Hot_New_Stuff">GetHotNewStuff</ulink>.</action></para></listitem> 0611 </varlistentry> 0612 <varlistentry> 0613 <term><menuchoice> 0614 <guimenu>File</guimenu> 0615 <guimenuitem>Open Example</guimenuitem> 0616 </menuchoice></term> 0617 <listitem><para><action>Opens the dialog to choose an example to load.</action> The examples should be downloaded with <menuchoice><guimenu>File</guimenu> 0618 <guimenuitem>Download Example Worksheets</guimenuitem></menuchoice> beforehand.</para></listitem> 0619 </varlistentry> 0620 <varlistentry> 0621 <term><menuchoice> 0622 <guimenu>File</guimenu> 0623 <guimenuitem>Save Plain Text</guimenuitem> 0624 </menuchoice></term> 0625 <listitem><para><action>Allows saving the current worksheet as a plain text document.</action></para></listitem> 0626 </varlistentry> 0627 <varlistentry> 0628 <term><menuchoice> 0629 <guimenu>File</guimenu> 0630 <guimenuitem>Export to LaTeX</guimenuitem> 0631 </menuchoice></term> 0632 <listitem><para><action>Allows saving the current worksheet as a &latex; document.</action></para></listitem> 0633 </varlistentry> 0634 <varlistentry> 0635 <term><menuchoice> 0636 <guimenu>File</guimenu> 0637 <guimenuitem>Publish Worksheet</guimenuitem> 0638 </menuchoice></term> 0639 <listitem><para><action>Opens the dialog to publish your current worksheet and make it available to other &cantor; users through 0640 <ulink url="https://userbase.kde.org/Special:MyLanguage/Glossary#Get_Hot_New_Stuff">GetHotNewStuff</ulink>.</action></para></listitem> 0641 </varlistentry> 0642 <varlistentry> 0643 <term><menuchoice> 0644 <guimenu>File</guimenu> 0645 <guimenuitem>Run Script</guimenuitem> 0646 </menuchoice></term> 0647 <listitem><para><action>Allows to load and run the batch scripts for the current backend.</action></para></listitem> 0648 </varlistentry> 0649 </variablelist> 0650 </para> 0651 0652 </sect2> 0653 0654 <sect2 id="view-menu"> 0655 <title>The View Menu</title> 0656 <para> 0657 <variablelist> 0658 <varlistentry> 0659 <term><menuchoice><guimenu>View</guimenu><guisubmenu>Panels</guisubmenu></menuchoice></term> 0660 <listitem><para>Allows you to toggle the visibility of some tabs in the sidebar. Choices are: 0661 <variablelist> 0662 <varlistentry> 0663 <term><guimenuitem>File Browser</guimenuitem></term> 0664 <listitem><para><action>Toggles</action> the visibility of the <guilabel>File Browser</guilabel> tab in the sidebar.</para></listitem> 0665 </varlistentry> 0666 0667 <varlistentry> 0668 <term><guimenuitem>Help</guimenuitem></term> 0669 <listitem><para><action>Toggles</action> the visibility of the <guilabel>Help</guilabel> tab in the sidebar.</para></listitem> 0670 </varlistentry> 0671 0672 <varlistentry> 0673 <term><guimenuitem>Variable Manager</guimenuitem></term> 0674 <listitem><para><action>Toggles</action> the visibility of the <guilabel>Variable Manager</guilabel> tab in the sidebar.</para></listitem> 0675 </varlistentry> 0676 </variablelist></para></listitem> 0677 </varlistentry> 0678 <varlistentry> 0679 <term><menuchoice> 0680 <shortcut> 0681 <keycombo action="simul">&Ctrl;<keycap>+</keycap></keycombo> 0682 </shortcut> 0683 <guimenu>View</guimenu> 0684 <guimenuitem>Zoom In</guimenuitem> 0685 </menuchoice></term> 0686 <listitem><para><action>Zoom in</action> the current worksheet by 10%.</para></listitem> 0687 </varlistentry> 0688 <varlistentry> 0689 <term><menuchoice> 0690 <shortcut> 0691 <keycombo action="simul">&Ctrl;<keycap>-</keycap></keycombo> 0692 </shortcut> 0693 <guimenu>View</guimenu> 0694 <guimenuitem>Zoom Out</guimenuitem> 0695 </menuchoice></term> 0696 <listitem><para><action>Zoom out</action> the current worksheet by 10%.</para></listitem> 0697 </varlistentry> 0698 <varlistentry> 0699 <term><menuchoice> 0700 <guimenu>View</guimenu> 0701 <guimenuitem>Show Script Editor</guimenuitem> 0702 </menuchoice></term> 0703 <listitem><para><action>Opens the batch script editor window for the current backend.</action></para></listitem> 0704 </varlistentry> 0705 </variablelist> 0706 </para> 0707 </sect2> 0708 0709 <sect2 id="worsheet-menu"> 0710 <title>The Worksheet Menu</title> 0711 <para> 0712 <variablelist> 0713 <varlistentry> 0714 <term><menuchoice> 0715 <shortcut> 0716 <keycombo action="simul">&Ctrl;<keycap>E</keycap></keycombo> 0717 </shortcut> 0718 <guimenu>Worksheet</guimenu> 0719 <guimenuitem>Evaluate Worksheet</guimenuitem> 0720 </menuchoice></term> 0721 <listitem><para><action>Triggers</action> the evaluation of the whole worksheet.</para></listitem> 0722 </varlistentry> 0723 <varlistentry> 0724 <term><menuchoice> 0725 <shortcut> 0726 <keycombo action="simul">&Shift;&Enter;</keycombo> 0727 </shortcut> 0728 <guimenu>Worksheet</guimenu> 0729 <guimenuitem>Evaluate Entry</guimenuitem> 0730 </menuchoice></term> 0731 <listitem><para><action>Triggers</action> the current entry evaluation.</para></listitem> 0732 </varlistentry> 0733 <varlistentry> 0734 <term><menuchoice> 0735 <shortcut> 0736 <keycombo action="simul">&Ctrl;&Enter;</keycombo> 0737 </shortcut> 0738 <guimenu>Worksheet</guimenu> 0739 <guimenuitem>Insert Command Entry</guimenuitem> 0740 </menuchoice></term> 0741 <listitem><para><action>Inserts a new command entry below the current cursor position.</action></para></listitem> 0742 </varlistentry> 0743 <varlistentry> 0744 <term><menuchoice> 0745 <guimenu>Worksheet</guimenu> 0746 <guimenuitem>Insert Text Entry</guimenuitem> 0747 </menuchoice></term> 0748 <listitem><para><action>Inserts a new text entry below the current cursor position.</action></para></listitem> 0749 </varlistentry> 0750 <varlistentry> 0751 <term><menuchoice> 0752 <guimenu>Worksheet</guimenu> 0753 <guimenuitem>Insert Markdown Entry</guimenuitem> 0754 </menuchoice></term> 0755 <listitem><para><action>Inserts a &Markdown; entry below the current cursor position.</action>.</para></listitem> 0756 </varlistentry> 0757 <varlistentry> 0758 <term><menuchoice> 0759 <guimenu>Worksheet</guimenu> 0760 <guimenuitem>Insert LaTeX Entry</guimenuitem> 0761 </menuchoice></term> 0762 <listitem><para><action>Inserts a &latex; entry below the current cursor position.</action>.</para></listitem> 0763 </varlistentry> 0764 <varlistentry> 0765 <term><menuchoice> 0766 <guimenu>Worksheet</guimenu> 0767 <guimenuitem>Insert Image</guimenuitem> 0768 </menuchoice></term> 0769 <listitem><para><action>Inserts an image below the current cursor position.</action></para></listitem> 0770 </varlistentry> 0771 <varlistentry> 0772 <term><menuchoice> 0773 <guimenu>Worksheet</guimenu> 0774 <guimenuitem>Insert Page Break</guimenuitem> 0775 </menuchoice></term> 0776 <listitem><para><action>Inserts the page break below the current cursor position.</action></para></listitem> 0777 </varlistentry> 0778 <varlistentry> 0779 <term><menuchoice> 0780 <guimenu>Worksheet</guimenu> 0781 <guimenuitem>Collapse All Results</guimenuitem> 0782 </menuchoice></term> 0783 <listitem><para><action>Collapse all results of the command entry.</action></para></listitem> 0784 </varlistentry> 0785 <varlistentry> 0786 <term><menuchoice> 0787 <guimenu>Worksheet</guimenu> 0788 <guimenuitem>Expand All Results</guimenuitem> 0789 </menuchoice></term> 0790 <listitem><para><action>Expand all results of the command entry.</action></para></listitem> 0791 </varlistentry> 0792 <varlistentry> 0793 <term><menuchoice> 0794 <guimenu>Worksheet</guimenu> 0795 <guimenuitem>Remove All Results</guimenuitem> 0796 </menuchoice></term> 0797 <listitem><para><action>Remove all results of the command entry.</action></para></listitem> 0798 </varlistentry> 0799 <varlistentry> 0800 <term><menuchoice> 0801 <shortcut> 0802 <keycombo action="simul">&Shift;∇</keycombo> 0803 </shortcut> 0804 <guimenu>Worksheet</guimenu> 0805 <guimenuitem>Remove current Entry</guimenuitem> 0806 </menuchoice></term> 0807 <listitem><para><action>Removes</action> current entry from the worksheet.</para></listitem> 0808 </varlistentry> 0809 </variablelist> 0810 </para> 0811 </sect2> 0812 0813 <sect2 id="linear-algebra-menu"> 0814 <title>The Linear Algebra Menu</title> 0815 <para> 0816 <variablelist> 0817 <varlistentry> 0818 <term><menuchoice> 0819 <guimenu>Linear Algebra</guimenu> 0820 <guimenuitem>Create Matrix</guimenuitem> 0821 </menuchoice></term> 0822 <listitem><para><action>Opens</action> the <link linkend="create-matrix-dlg">matrix creation assistant dialog</link>.</para></listitem> 0823 </varlistentry> 0824 <varlistentry> 0825 <term><menuchoice> 0826 <guimenu>Linear Algebra</guimenu> 0827 <guimenuitem>Compute Eigenvalues</guimenuitem> 0828 </menuchoice></term> 0829 <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. 0830 </para></listitem> 0831 </varlistentry> 0832 <varlistentry> 0833 <term><menuchoice> 0834 <guimenu>Linear Algebra</guimenu> 0835 <guimenuitem>Compute Eigenvectors</guimenuitem> 0836 </menuchoice></term> 0837 <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. 0838 </para></listitem> 0839 </varlistentry> 0840 <varlistentry> 0841 <term><menuchoice> 0842 <guimenu>Linear Algebra</guimenu> 0843 <guimenuitem>Invert Matrix</guimenuitem> 0844 </menuchoice></term> 0845 <listitem><para><action>Opens</action> the <link linkend="compute-invert-dlg">matrix name input assistant dialog</link> to find the inverse of the matrix. 0846 </para></listitem> 0847 </varlistentry> 0848 </variablelist> 0849 </para> 0850 </sect2> 0851 0852 <sect2 id="calculate-menu"> 0853 <title>The Calculate Menu</title> 0854 <para> 0855 <variablelist> 0856 <varlistentry> 0857 <term><menuchoice> 0858 <guimenu>Calculate</guimenu> 0859 <guimenuitem>Differentiate</guimenuitem> 0860 </menuchoice></term> 0861 <listitem><para><action>Opens</action> the <link linkend="calculate-derivative-dlg">differentiation parameters dialog</link>. 0862 </para></listitem> 0863 </varlistentry> 0864 <varlistentry> 0865 <term><menuchoice> 0866 <guimenu>Calculate</guimenu> 0867 <guimenuitem>Integrate</guimenuitem> 0868 </menuchoice></term> 0869 <listitem><para><action>Opens</action> the <link linkend="calculate-integral-dlg">integration parameters dialog</link>. 0870 </para></listitem> 0871 </varlistentry> 0872 <varlistentry> 0873 <term><menuchoice> 0874 <guimenu>Calculate</guimenu> 0875 <guimenuitem>Solve equations</guimenuitem> 0876 </menuchoice></term> 0877 <listitem><para><action>Opens</action> the <link linkend="calculate-solve-dlg">parameters input dialog</link> to solve linear and non-linear equations. 0878 </para></listitem> 0879 </varlistentry> 0880 </variablelist> 0881 </para> 0882 </sect2> 0883 0884 <sect2 id="package-menu"> 0885 <title>The Package Menu</title> 0886 <para> 0887 <variablelist> 0888 <varlistentry> 0889 <term><menuchoice> 0890 <guimenu>Package</guimenu> 0891 <guimenuitem>Import Package</guimenuitem> 0892 </menuchoice></term> 0893 <listitem><para><action>Opens</action> the <link linkend="package-import-dlg">package import dialog</link>. 0894 </para></listitem> 0895 </varlistentry> 0896 </variablelist> 0897 </para> 0898 </sect2> 0899 0900 <sect2 id="plot-menu"> 0901 <title>The Plot Menu</title> 0902 <para> 0903 <variablelist> 0904 <varlistentry> 0905 <term><menuchoice> 0906 <guimenu>Plot</guimenu> 0907 <guimenuitem>Plot</guimenuitem> 0908 </menuchoice></term> 0909 <listitem><para><action>Opens</action> the <link linkend="plot-dlg">plot parameters dialog</link>. 0910 </para></listitem> 0911 </varlistentry> 0912 <varlistentry> 0913 <term><menuchoice> 0914 <guimenu>Plot</guimenu> 0915 <guimenuitem>Plot 2D</guimenuitem> 0916 </menuchoice></term> 0917 <listitem><para><action>Opens</action> the <link linkend="plot2d-dlg">plot parameters dialog</link>. 0918 </para></listitem> 0919 </varlistentry> 0920 <varlistentry> 0921 <term><menuchoice> 0922 <guimenu>Plot</guimenu> 0923 <guimenuitem>Plot 3D</guimenuitem> 0924 </menuchoice></term> 0925 <listitem><para><action>Opens</action> the <link linkend="plot3d-dlg">plot parameters dialog</link>. 0926 </para></listitem> 0927 </varlistentry> 0928 </variablelist> 0929 </para> 0930 </sect2> 0931 0932 <sect2 id="settings-help-menu"> 0933 <title>The Settings and Help Menu</title> 0934 <para> 0935 &cantor; has the common &kde; <guimenu>Settings</guimenu> and <guimenu>Help</guimenu> 0936 menu items, for more information read the sections about the <ulink 0937 url="help:/fundamentals/menus.html#menus-settings">Settings Menu</ulink> and 0938 <ulink url="help:/fundamentals/menus.html#menus-help">Help Menu</ulink> 0939 of the &kde; Fundamentals. 0940 </para> 0941 0942 </sect2> 0943 0944 </sect1> 0945 </chapter> 0946 0947 <chapter id="faq"> 0948 <title>Questions and Answers</title> 0949 0950 <qandaset id="faqlist"> 0951 <qandaentry> 0952 <question><para>The Menu Item <guimenuitem>Typeset using LaTeX</guimenuitem> is not available</para></question> 0953 <answer><para>Not every backend supports every option. Current version supports &latex; output for Maxima, Qalculate! and Sage backends.</para></answer> 0954 </qandaentry> 0955 <qandaentry> 0956 <question><para>I have installed Sage/Maxima or other supported CAS, but the appropriate backend does not appear.</para></question> 0957 <answer> 0958 <para> 0959 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 0960 the <guilabel>Path</guilabel> to the appropriate application on the backend's page. 0961 </para> 0962 </answer> 0963 </qandaentry> 0964 <qandaentry> 0965 <question><para>What a peculiar name - what does it have to do with mathematics?</para></question> 0966 <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> 0967 </qandaentry> 0968 </qandaset> 0969 </chapter> 0970 0971 <chapter id="credits"> 0972 0973 <title>Credits and License</title> 0974 0975 <para> 0976 &cantor; 0977 </para> 0978 <para> 0979 Program copyright 2009-2011 Alexander Rieder <email>alexanderrieder@gmail.com</email> 0980 </para> 0981 0982 <para> 0983 Documentation Copyright © 2009-2011 Alexander Rieder <email>alexanderrieder@gmail.com</email> 0984 </para> 0985 0986 <!-- TRANS:CREDIT_FOR_TRANSLATORS --> 0987 0988 &underFDL; <!-- FDL: do not remove --> 0989 &underGPL; <!-- GPL License --> 0990 </chapter> 0991 0992 &documentation.index; 0993 </book> 0994 0995 <!-- 0996 Local Variables: 0997 mode: xml 0998 sgml-minimize-attributes:nil 0999 sgml-general-insert-case:lower 1000 sgml-indent-step:0 1001 sgml-indent-data:nil 1002 End: 1003 1004 vim:tabstop=2:shiftwidth=2:expandtab 1005 kate: space-indent on; indent-width 2; tab-width 2; indent-mode none; 1006 -->