The PLplot Plotting Library: Programmer's Reference Manual
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pltr0: Identity transformation for grid to world mapping

pltr0 (x, y, tx, ty, pltr_data);

Identity transformation for grid to world mapping. This routine can be used both for plcont and plshade. See also the Section called Contour Plots from C in Chapter 3 and the Section called Shade Plots from C in Chapter 3.

x (PLFLT, input)

X-position in grid coordinates.

y (PLFLT, input)

Y-position in grid coordinates.

tx (PLFLT *, output)

X-position in world coordinates.

ty (PLFLT *, output)

Y-position in world coordinates.

pltr_data (PLPointer, input)

Pointer to additional input data that is passed as an argument to plcont or plshade and then on to the grid to world transformation routine.

This function is currently available in C, C++, Ocaml, Perl, Python and Tcl.

This function is not used in any examples.

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plsfile: Set output file handleUppltr1: Linear interpolation for grid to world mapping using singly dimensioned coord arrays