Are there R routines that do not request that x,y,z data be increasing
before plotting? Trying to generate basic surfaces from
three-dimensional real data.  even if I put an ascending sort on one
axis the data along projected remaining coordinates may not be
increasing, or monotonic.  What routines will allow be to interpolate 3D
data and get surface plots.  The "persp" is limited.
 
Battle

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