You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
71 lines
2.4 KiB
71 lines
2.4 KiB
15 years ago
|
<chapter id="first-steps">
|
||
|
|
<title>First Steps With &kmplot;</title>
|
||
|
|
|
||
|
|
<sect1 id="simple-function-plot">
|
||
|
|
<title>Simple Function Plot</title>
|
||
|
|
|
||
|
|
<para>
|
||
|
|
In the main toolbar there is a simple text box in which you can enter
|
||
|
|
a function expression. Simply enter:
|
||
|
|
<screen><userinput>x^2</userinput></screen> and press &Enter;. This
|
||
|
|
will draw the plot of y=x^2 in the coordinate system. Enter another
|
||
|
|
expression in the text box like
|
||
|
|
<screen><userinput>5*sin(x)</userinput></screen> and another plot will
|
||
|
|
be added.
|
||
|
|
</para>
|
||
|
|
|
||
|
|
<para>Click on one of the lines you have just plotted. Now the cross
|
||
|
|
hair gets the color of the plot and is attached to the plot. You can
|
||
|
|
use the mouse to move the cross hair along the plot. In the status
|
||
|
|
bar at the bottom of the window the coordinates of the current
|
||
|
|
position is displayed. Note that if the plot touches the x-axis the
|
||
|
|
root will be displayed in the status bar, too.</para>
|
||
|
|
|
||
|
|
<para>Click the mouse again and the cross hair will be detached from
|
||
|
|
the plot.</para>
|
||
|
|
</sect1>
|
||
|
|
|
||
|
|
<sect1 id="edit-properties">
|
||
|
|
<title>Edit Properties</title>
|
||
|
|
|
||
|
|
<para>Let us make some changes to the function and change the color of
|
||
|
|
the plot.</para>
|
||
|
|
|
||
|
|
<para>You can edit all functions with the
|
||
|
|
<menuchoice><guimenu>Plot</guimenu><guimenuitem>Edit
|
||
|
|
Plots...</guimenuitem> </menuchoice> menu entry. A dialog appears
|
||
|
|
which lists all the functions that you have plotted. Notice that
|
||
|
|
&kmplot; has automatically found a unique function name for your
|
||
|
|
expressions and completed the expression to a function
|
||
|
|
equation.</para>
|
||
|
|
|
||
|
|
<para>Select <guilabel>f(x)=x^2</guilabel> in the list. A double click
|
||
|
|
or pressing the <guibutton>Edit</guibutton> button will show you a
|
||
|
|
dialog window. Here you have access to a lot of options. Let us rename
|
||
|
|
the function and move the plot 5 units down. Change the function
|
||
|
|
equation to <screen><userinput>parabola(x)=x^2-5</userinput></screen>
|
||
|
|
</para>
|
||
|
|
|
||
|
|
<para>To select another color for the plot click into the
|
||
|
|
<guilabel>Color:</guilabel> box. Finally press
|
||
|
|
<guibutton>OK</guibutton> and your changes take effect in the
|
||
|
|
coordinate system.</para>
|
||
|
|
|
||
|
|
<note><para>All changes can be undone until you press
|
||
|
|
<guibutton>OK</guibutton> in the <guilabel>Edit Plots</guilabel>
|
||
|
|
dialog.</para>
|
||
|
|
</note>
|
||
|
|
|
||
|
|
</sect1>
|
||
|
|
</chapter>
|
||
|
|
<!--
|
||
|
|
Local Variables:
|
||
|
|
mode: sgml
|
||
|
|
sgml-minimize-attributes:nil
|
||
|
|
sgml-general-insert-case:lower
|
||
|
|
sgml-indent-step:0
|
||
|
|
sgml-indent-data:nil
|
||
|
|
sgml-parent-document:("index.docbook" "BOOK" "CHAPTER")
|
||
|
|
End:
|
||
|
|
-->
|