XY2Z - converts (X,Y)-pairs to spike Z values on a uniform grid

xy2x1 < stdin npairs= [optional parameters] >stdout

Required parameter:
npairs= number of pairs input

Optional parameter:
scale=1.0 value to scale spikes by
nx1=100 dimension of first (fast) dimension of output array
nx2=100 dimension of second (slow) dimension of output array
x1pad=2 zero padding in x1 dimension
x2pad=2 zero padding in x2 dimension

Notes:
Converts ordered (x,y) pairs to spike x1values, of height=scale on a
uniform grid.


Credits:
CWP: John Stockwell, Nov 1995