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<?xml version="1.0" encoding="UTF-8"?>
<inkscape-extension xmlns="http://www.inkscape.org/namespace/inkscape/extension">
<name>Function Plotter</name>
<id>org.inkscape.effect.func_plot</id>
<param name="tab" type="notebook">
<page name="sampling" gui-text="Range and sampling">
<param name="xstart" type="float" min="-1000.0" max="1000.0" gui-text="Start X value:">0.0</param>
<param name="xend" type="float" min="-1000.0" max="1000.0" gui-text="End X value:">1.0</param>
<param name="times2pi" type="bool" gui-text="Multiply X range by 2*pi">false</param>
<param name="ybottom" type="float" min="-1000.0" max="1000.0" gui-text="Y value of rectangle's bottom:">0.0</param>
<param name="ytop" type="float" min="-1000.0" max="1000.0" gui-text="Y value of rectangle's top:">1.0</param>
<param name="samples" type="int" min="2" max="1000" gui-text="Number of samples:">8</param>
<param name="isoscale" type="bool" gui-text="Isotropic scaling">true</param>
<label>When set, Isotropic scaling uses smallest of width/xrange or height/yrange</label>
<param name="polar" type="bool" gui-text="Use polar coordinates">true</param>
</page>
<page name="use" gui-text="Use">
<label xml:space="preserve">Select a rectangle before calling the extension,
it will determine X and Y scales. If you wish to fill the area, then add x-axis endpoints.
With polar coordinates:
Start and end X values define the angle range in radians.
X scale is set so that left and right edges of rectangle are at +/-1.
Isotropic scaling is disabled.
First derivative is always determined numerically.</label>
</page>
<page name="desc" gui-text="Functions">
<label>Standard Python math functions are available:</label>
<label xml:space="preserve" translatable="no">
ceil(x); copysign(x, y); fabs(x); floor(x); fmod(x,y); frexp(x); ldexp(x,i); modf(x); remainder(x, y); trunc(x);
exp(x); expm1(x); log(x [, base]); log1p(x); log2(x); log10(x); pow(x,y); sqrt(x);
cos(x); sin(x); tan(x); acos(x); asin(x); atan(x); atan2(y,x); dist(p, q); hypot(x,y);
degrees(x); radians(x);
cosh(x); sinh(x); tanh(x); acosh(x); asinh(x); atanh(x);
erf(x); erfc(x); gamma(x); lgamma(x).
</label>
<label>The constants pi, e and tau are also available.</label>
<label>Functions from the random library may also be used,
eg. random(); randint(a, b); uniform(a, b).</label>
</page>
<page name="Help" gui-text="Help">
<label>This extension creates a plot of a function (in variable x).</label>
<label>In order to use the extension, select a rectangle first. The rectangle will serve as bounding box of the plot.</label>
</page>
</param>
<param name="fofx" type="string" gui-text="Function:">sin(x)</param>
<param name="fponum" type="bool" gui-text="Calculate first derivative numerically">true</param>
<param name="fpofx" type="string" gui-text="First derivative:">cos(x)</param>
<param name="clip" type="bool" gui-text="Clip with rectangle">false</param>
<param name="remove" type="bool" gui-text="Remove rectangle">true</param>
<param name="drawaxis" type="bool" gui-text="Draw Axes">false</param>
<param name="endpts" type="bool" gui-text="Add x-axis endpoints">false</param>
<effect>
<object-type>rect</object-type>
<effects-menu>
<submenu name="Render"/>
</effects-menu>
</effect>
<script>
<command location="inx" interpreter="python">funcplot.py</command>
</script>
</inkscape-extension>
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