Error, (in plot/iplot2d/levelcurve) could not evaluate expression
Description
Examples
This error occurs if Maple cannot evaluate the given expression to a numeric value when graphing with plots[contourplot].
withplots:
Example 1
In this example, the wrong variable is used in the expression to be plotted.
contourplotsinx⋅z,x=−3..3, y=−3..3
Solution:
contourplotsinx⋅y,x=−3..3, y=−3..3
Example 2
In the following example, the first argument passed to contourplot is a complex value, instead of a real value.
contourplotx+I⋅y,x=−3..3,y=−3..3
To correct the error, pass only the real part of the complex value as an argument to contourplot.
contourplotRex+I⋅y,x=−3..3,y=−3..3
See Also
plots[contourplot]
plots
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