![[attach.png]](idldoc-resources/attach.png)
./
reverse_indices.pro
topreverse_indices
result = reverse_indices(histo, ri [, bin] [, OMIN=OMIN] [, OMAX=OMAX] [, VALUE=VALUE])
use histogram to pull out regions using the reverse_indices keyword
Return value
out: indices in that bin of a histogram
Parameters
- histo in required
a histogram from the histogram() function
- ri in required
the histogram() reverse_indices keyword output
- bin in optional
the bin you want the indices for
Keywords
- OMIN in optional
omin keyword output from histogram()
- OMAX in optional
omax keyword output from histogram()
- VALUE in optional
specify a bin by value instead of number
Examples
IDL> data=fix(randomu(101,25)*12)
IDL> h=histogram(data, OMIN=omin, OMAX=omax, REVERSE_INDICES=ri, binsize=2, /nan)
IDL> print, data[sort(data)]
0 0 0 1 1 1 1 2 3 3 4 4 4 4 4
5 6 7 9 10 10 11 11 11 11
IDL> print, data[reverse_indices(h, ri, 2)]
5 4 4 4 4 4
IDL> print, data[reverse_indices(h, ri, value=3.5 , OMIN=omin, OMAX=omax)]
2 3 3
Author information
- History:
Wed Dec 19 15:43:36 2007, Brian Larsen added early return of NaN if there are no indices Mon Feb 12 15:14:46 2007, Brian Larsen written and tested
Statistics
| Lines: | 37 |
| McCabe complexity: |
File attributes
| Modifcation date: | Tue Sep 9 14:12:26 2008 |
| Lines: | 92 |