How can I put the results of functions into a plot? I can't find any examples.
f(x) = x/33.82
plotEquation = plot(f(x), -1, 70)
equationDifferential = f.diff()(x)
big_image = plotEquation
# big_image = plotEquation + SOME CODE THAT PUTS THE RESULT OF f.diff()(x) in the plot.
big_image.show()
You may use text to create a text 2D graphics object and + to join the graphics:
sage: f(x)=x/33.82
sage: plotEquation = plot(f(x),-1,70)
sage: equationDifferential = f.diff()(x)
sage: big_image = plotEquation
sage: equationDifferential
0.0295683027794205
sage: t = text("slope = {}".format(equationDifferential), (.5, 1), axis_coords=True)
sage: s = text("example", (60, 1), color='orange')
sage: big_image = plotEquation + t + s
sage: big_image
Note that axis_coords=True changes the coordinate system as described by the documentation of text:
* "axis_coords" - (default: False) If True, use axis coordinates,
so that (0,0) is the lower left and (1,1) upper right, regardless
of the x and y range of plotted values.
In complement to @Sébastien answer, note that you can include mathematical expressions in the displayed text by transforming them into a LaTeX string first: if f(x) is a symbolic function that you have defined, you can do
text("My function: " + "$" + latex(f(x)) + "$", (60, 1))
Asked: 2018-06-05 12:20:42 +0100
Seen: 521 times
Last updated: Jun 06 '18
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