input,s,h,"stdin",,,"input file or stdin"
output,s,h,"stdout",,,"output file or stdout"
ncolors,i,h,200,,,"number of colors in color map"
nscale,i,h,65536,,,"number of elements in the scale"
min,r,h,0.0,,,"user-specified min data value"
max,r,h,0.0,,,"user-specified max data value"
log,r,h,10.0,,,"exponent for log scale"
power,r,h,2.0,,,"power for pow scale"
nwrap,i,h,32,,,"wrap value for warp scale"
edge,i,h,0,,,"edge to skip in minmax"
checkNaN,i,h,1,,,"check for NaN values?"
mode,s,h,"h",,,