Equivalent of LabVIEW Threshold 1D Array Function in Python

Question

is there an equivalent of labview Threshold 1D Array Function: http://zone.ni.com/reference/en-XX/help/371361H-01/glang/threshold_1d_array/ in python?

Answer 1

I don't know of one as is, but it's a very small to write. You can wrap the following into a function

p = next(ii for ii,v in enumerate(x) if (v>=y))
frac=p-1.0+(float(y) - x[p-1])/(x[p]-x[p-1])

in the above, x is the input dataset, y is the value for which you want the fractional index. frac is, well...

Small explanation: enumerate(x) makes an iterator that returns (index,value) from x. So, they're what get put into ii,v.