analysis/

mg_sample.pro

includes main-level program

Routines

top mg_sample

result = mg_sample(nValues, nIndices [, seed=integer or lonarr(36)])

Get nIndices random indices for an array of size nValues (without repeating an index).

Return value

lonarr(nIndices)

Parameters

nValues in required type=long

size of array to choose indices from

nIndices in required type=long

number of indices needed

Keywords

seed in out optional type=integer or lonarr(36)

seed to use for random number generation, leave undefined to use a seed generated from the system clock; new seed will be output

Examples

Try:

  IDL> r = randomu(seed, 10)
  IDL> print, r, format='(4F)'
        0.6297589      0.7815896      0.2508559      0.7546844
        0.1353382      0.1245834      0.8733745      0.0753110
        0.8054136      0.9513228
  IDL> ind = mg_sample(10, 3, seed=seed)
  IDL> print, ind
             2           4           7
  IDL> print, r[ind]
       0.250856     0.135338    0.0753110

Other attributes

Requires:: IDL 8.0

File attributes

Modification date:	Wed May 14 15:07:14 2014
Lines:	21
Docformat:	rst rst

Personal library of Michael Galloy
Contact me if you have enhancement requests or bug fixes.

mglib

Personal IDL library for M. Galloy