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Re: Top 10 IDL Requests

Michael Plonski wrote:
> 1) Complement of Where - so the same call returns where, and a named
> variable returns where-not

FUNCTION WHERENOT, TEST, COUNT
return, where(test eq 0, count)
END

b = where(a lt 5, count)   
print, b, count
      0           1           2           3           4
      5

b = wherenot(a lt 5, count)
print, b, count
      5           6           7           8           9
      5

It requires another 'where' call if you want the where and where-not,
but I'm guessing this functionality isn't needed that often.

Cheers,
Liam.
http://cimss.ssec.wisc.edu/~gumley