plstransform: Set a global coordinate transform function

plstransform (transform_fun, data);

This function can be used to define a coordinate transformation which affects all elements drawn within the current plot window. The transformation function is similar to that provided for the plmap and plmeridians functions. The data parameter may be used to pass extra data to transform_fun.

transform_fun (void (*) (PLFLT, PLFLT, PLFLT*, PLFLT*, PLPointer) , input)

Pointer to a function that defines a transformation from the input (x, y) coordinate to a new plot world coordiante.

data (PLPointer, input)

Optional extra data for transform_fun.

Redacted form:

This function is used in example 19.