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| R2012a Documentation → Symbolic Math Toolbox | |
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In the previous section, we introduced plotfunc2d and plotfunc3d that serve for plotting functions in 2D and 3D with simple calls in easy syntax. Although all plot attributes accepted by function graphs (of type plot::Function2d or plot::Function3d, respectively) are also accepted by plotfunc2d/3d, there remains a serious restriction: the attributes are used for all functions simultaneously.
If attributes are to be applied to functions individually, one needs to invoke a (slightly) more elaborate calling syntax to generate the plot:
plot(
plot::Function2d(f1, x1 = a1..b1, attrib11, attrib12, ...),
plot::Function2d(f2, x2 = a2..b2, attrib21, attrib22, ...),
...
):
In this call, each call of plot::Function2d creates a separate object that represents the graph of the function passed as the first argument over the plotting range passed as the second argument. An arbitrary number of plot attributes can be associated with each function graph. The objects themselves are not displayed directly. The plot command triggers the evaluation of the functions on some suitable numerical mesh and calls the renderer to display these numerical data in the form specified by the given attributes.
In fact, plotfunc2d and plotfunc3d do precisely the same: Internally, they generate plot objects of type plot::Function2d or plot::Function3d, respectively, and call the renderer via plot.
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