Working with arrays
One of the things IDL is able to do is working with arrays very nicely.
this latest one is a 2D array.
Arrays are in the [ column , row ] order.
Arrays start at 0!!!
=> the 5th column of tab[N,M] is tab[4,*]
There is a large set of other array-oriented arithmetic functions, such as expand, mean, rebin, reverse, smooth, sort, total, transpose, and so forth.
IDL courses C. Morisset © 2004 IA/UNAM V 2.2