|The PLplot Plotting Library: Programmer's Reference Manual|
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Draws a contour plot of the data in
levels specified by
Only the region of the array from
lx and from
ly is plotted out. The
yg are used to specify the
transformation between array indices and world coordinates. See
the Section called Contour and Shade Plots in Chapter 3 for more information.
NOTE: this function is intended for use from a Fortran 77 caller only.
The C user should instead call
plcont using the built-in
pltr1 for the same