DIdx - Revision history

Laura at 17:14, 22 May 2014

2014-05-22T17:14:47Z

← Older revision		Revision as of 17:14, 22 May 2014
Line 1:		Line 1:
	DIDX (<array-name>)		DIDX (<[[array name]]>)

	The '''DIDX''' [[internal function]] returns an [[array]] that is a descending index obtained from sorting the array named. The array to be sorted may be either string or numeric. Only permitted in the MAT statement.		The '''DIDX''' [[internal function]] returns an [[array]] that is a descending index obtained from sorting the array named. The array to be sorted may be either string or numeric. Only permitted in the MAT statement.

Laura at 20:13, 20 May 2014

2014-05-20T20:13:09Z

← Older revision		Revision as of 20:13, 20 May 2014
Line 1:		Line 1:
	DIDX (array-name)		DIDX (<array-name>)

	The '''DIDX''' [[internal function]] returns an [[array]] that is a descending index obtained from sorting the array named. The array to be sorted may be either string or numeric. Only permitted in the MAT statement.		The '''DIDX''' [[internal function]] returns an [[array]] that is a descending index obtained from sorting the array named. The array to be sorted may be either string or numeric. Only permitted in the MAT statement.

John: moved DIDX to DIdx

2014-02-27T13:11:26Z

moved DIDX to DIdx

← Older revision	Revision as of 13:11, 27 February 2014
(No difference)

Mikhail.zheleznov: *

2012-01-24T10:07:31Z

@@ Line 2: / Line 2: @@
 The '''DIDX'''  [[internal function]] returns an [[array]] that is a descending index obtained from sorting the array named. The array to be sorted may be either string or numeric. Only permitted in the MAT statement.
 ===Comments and Examples===
-See the [[AIdx]] function.
+The program below will sort and print an array of names in reverse alphabetical order:
 ===Related Functions===

Mikhail.zheleznov: *

2012-01-17T11:27:54Z

← Older revision		Revision as of 11:27, 17 January 2012
Line 14:		Line 14:
	*[[Sum]]		*[[Sum]]
	*[[UDim]]		*[[UDim]]
	*[[Mat]]

	===Technical Considerations===		===Technical Considerations===

Mikhail.zheleznov: edit

2012-01-13T14:54:43Z

edit

New page

DIDX (array-name)

The '''DIDX''' [[internal function]] returns an [[array]] that is a descending index obtained from sorting the array named. The array to be sorted may be either string or numeric. Only permitted in the MAT statement.

===Comments and Examples===

See the [[AIdx]] function.

===Related Functions===

Other functions that operate on arrays are
*[[AIdx]] (array sort with ascending index)
*[[Srch]]
*[[Sum]]
*[[UDim]]
*[[Mat]]

===Technical Considerations===

# DIdx will places equal array elements into ascending order by array index. In other words, for an array with three elements 10, 20 and 20, DIdx will return 2, 3, 1 (instead of 3, 2, 1).
# The [[RD]] specification in [[BRConfig.sys]] can affect the DIdx function because it determines when two numeric values are considered equal.
# The [[COLLATE]] [[option]] in effect when the program was last saved or in the OPTION statement can alter the sort order from the DIDX function when sorting string values.
# To use DIDX, the arrays on both sides of the equal sign must have the same dimensions.

<noinclude>
[[Category:Internal Functions]]
</noinclude>