I am trying to count the number of peaks on waveform, squared so as to
make the waves values postitive. I am only interested in the count
returned by PeakDetector,(PD). However I am unable to prevent it from
over allocating for the peak locations, amplitudes, and second
derivatives arrays. I've tried to do an iterative set up as exactly as
the example given with the Analysis package shows. One thing I've
found is that FreeAnalysisMem,(FAM) does not do much good. Also if the
pointers happen to have all elements with zero values, then it is
considered a NULL pointer and I get a Lib error from FAM. I've tried
realloc() on the ptrs. I realocated to zero, but something is still
allocated for this, and I eventually have no memory l
eft. I've tried
the free() method, but this apparently frees the memory so that it can
no longer be allocated. Why the CVI compiler does this I don't know,
but I've read "efficient C programming" and it claims that free() is
supposed to free the block so that it may be allocated again.
So, I am trying to use PD for the count only. If anyone can help me to
control the allocation taking place please help.
My algorithm is covering nine channels. at each channel I'd want to
scan, digitize, square, then find peaks at various levels. I then note
the count of peaks falling in a specific range(between two levels). I
have to call PD five times per channel. I've tried every combo of the
initialize and endOfData variable. Please help, or help me find a free
Peak finding algorithm somewhere out there that actually works in a
friendly sort of way.
THanks Jason
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