r_index - Function

Get index array for a record array

Synopsis
r_index(v, ...)

Arguments

v	in	a record array from which to extract elements
		Allowed:	record (array)
...	in	slicing dimensions
		Allowed:	integers, an index record, integer vectors

Returns
integer array

Description
r_index is a helper function for the record array functions. It returns an integer array with the selected elements.

Example

- print a := r_array(1:6,3,2)			# create a record array
[*29=1, *30=2, *31=3, *32=4, *33=5, *34=6]
- r_index(a)					# its index
[[1:3,]
    1 4
    2 5
    3 6] 
- r_index(a)::					# its shape 
[shape=[3 2] ] 
- r_index(a,2,)
[2 5]  
- r_index(a,2,)::
[shape=2] 
- r_index(a,2,2)
5 
- r_index(a,2,2)::
[=]

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	Package	general
	Module	quanta