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<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Chapter 4. Построение графиков</title><meta name="generator" content="DocBook XSL Stylesheets Vsnapshot"><link rel="home" href="index.html" title="Руководство пользователя Genius"><link rel="up" href="index.html" title="Руководство пользователя Genius"><link rel="prev" href="ch03s03.html" title="Открытие и запуск программы"><link rel="next" href="ch04s02.html" title="Parametric Plots"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Chapter 4. Построение графиков</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="ch03s03.html">Prev</a> </td><th width="60%" align="center"> </th><td width="20%" align="right"> <a accesskey="n" href="ch04s02.html">Next</a></td></tr></table><hr></div><div class="chapter"><div class="titlepage"><div><div><h1 class="title"><a name="genius-gel-plotting"></a>Chapter 4. Построение графиков</h1></div></div></div><div class="toc"><p><b>Table of Contents</b></p><dl class="toc"><dt><span class="sect1"><a href="ch04.html#genius-line-plots">Линейные графики</a></span></dt><dt><span class="sect1"><a href="ch04s02.html">Parametric Plots</a></span></dt><dt><span class="sect1"><a href="ch04s03.html">Slopefield Plots</a></span></dt><dt><span class="sect1"><a href="ch04s04.html">Vectorfield Plots</a></span></dt><dt><span class="sect1"><a href="ch04s05.html">Графики поверхностей</a></span></dt></dl></div><p>Построение графиков поддерживается только в версии с графическим интерфейсом для GNOME. Все варианты графиков, имеющиеся в графическом интерфейсе, доступны из окна <span class="guilabel">Создать график</span>. Чтобы открыть это окно, нажмите кнопку <span class="guilabel">График</span> на панели инструментов или выберите <span class="guilabel">Нарисовать график</span> из меню <span class="guilabel">Калькулятор</span>. Можно также использовать команды <a class="link" href="ch11s20.html" title="Построение графиков">построения графиков</a> языка GEL. Смотрите <a class="xref" href="ch05.html" title="Chapter 5. Основы GEL">Chapter 5, <i>Основы GEL</i></a>, чтобы узнать, как вводить выражения, которые понимает Genius.</p><div class="sect1"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="genius-line-plots"></a>Линейные графики</h2></div></div></div><p lang="en">
To graph real-valued functions of one variable, open the <span class="guilabel">Create Plot</span>
window. You can also use the
<a class="link" href="ch11s20.html#gel-function-LinePlot"><code class="function">LinePlot</code></a> function
on the command line (see its documentation). And by the words line plot, we mean plots in the plane,
as opposed to surface plots, which are in three dimensions.
</p><p>После нажатия кнопки <span class="guilabel">График</span> откроется окно с несколькими вкладками. Вам нужна вкладка <span class="guilabel">Линейный график функции</span>, внутри которой следует выбрать вкладку <span class="guilabel">Функции / Выражения</span>. Смотрите <a class="xref" href="ch04.html#lineplot-fig" title="Figure 4.1. Create Plot Window">Figure 4.1, “Create Plot Window”</a>.</p><div class="figure"><a name="lineplot-fig"></a><p class="title"><b>Figure 4.1. Create Plot Window</b></p><div class="figure-contents"><div class="screenshot"><div lang="en" class="mediaobject"><img src="figures/line_plot.png" alt="Shows the line plotting window."></div></div></div></div><br class="figure-break"><p lang="en">
Type expressions with <strong class="userinput"><code>x</code></strong> as
the independent variable into the textboxes. Alternatively you can give names of functions such as
<strong class="userinput"><code>cos</code></strong> rather then having to type <strong class="userinput"><code>cos(x)</code></strong>.
You can graph up to ten functions. If you make a mistake and Genius cannot
parse the input it will signify this with a warning icon on the right of the text
input box where the error occurred, as well as giving you an error dialog.
You can change the ranges of the dependent and independent variables in the bottom
part of the dialog. In the boxes for the ranges, simple expressions are allowed,
such as <strong class="userinput"><code>2*pi</code></strong> or <strong class="userinput"><code>10^3</code></strong>.
The <code class="varname">y</code> (dependent) range can be set automatically by turning on the <span class="guilabel">Fit dependent axis</span>
checkbox.
The names of the variables can also be changed.
Pressing the <span class="guilabel">Plot</span> button produces the graph shown in <a class="xref" href="ch04.html#lineplot2-fig" title="Figure 4.2. Plot Window">Figure 4.2, “Plot Window”</a>.
</p><p lang="en">
The variables can be renamed by clicking the <span class="guilabel">Change variable names...</span> button, which is useful if you wish to print or save the figure and don't want to use the standard
names. Finally you can also avoid printing the legend and the axis labels completely,
which is also useful if printing or
saving, when the legend might simply be clutter.
</p><div class="figure"><a name="lineplot2-fig"></a><p class="title"><b>Figure 4.2. Plot Window</b></p><div class="figure-contents"><div class="screenshot"><div lang="en" class="mediaobject"><img src="figures/line_plot_graph.png" alt="The graph produced."></div></div></div></div><br class="figure-break"><p lang="en">
From here you can print out the plot, create encapsulated postscript
or a PNG version of the plot or change the zoom. If the dependent axis was
not set correctly you can have Genius fit it by finding out the extrema of
the graphed functions.
</p><p lang="en">
For plotting using the command line see the documentation of the
<a class="link" href="ch11s20.html#gel-function-LinePlot"><code class="function">LinePlot</code></a> function.
</p></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="ch03s03.html">Prev</a> </td><td width="20%" align="center"> </td><td width="40%" align="right"> <a accesskey="n" href="ch04s02.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Открытие и запуск программы </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> Parametric Plots</td></tr></table></div></body></html>
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