topic Re: change 2D array index value in LabVIEW

change 2D array index value

megastar — Wed, 29 May 2013 09:44:29 GMT

I am working on 2D array of size 1024x1280 (zero indexing). now i need to change both row and column indexing

row indexing change from (0,1,2,3....1023) to (0.5, 1.0, 1.5, 2.0, 2.5, ....., 512)

column indexing change from (0,1,2,3.....1279) to (0.5, 1.0, 1.5, 2.0, 2.5,........, 640)

I tried with property node IndexVals, but not success.. please help

Re: change 2D array index value

NapDynamite — Wed, 29 May 2013 09:53:21 GMT

Have you tried using "reshape array"?

Re: change 2D array index value

NapDynamite — Wed, 29 May 2013 09:59:10 GMT

1024x1280 means your array has 1024 ROWS and 1280 columns. The rows start from "0th" element to "1023th" element. I don't get what is "0.5th" element or "2.5th" element?
Care to elaborate what you actually are doing?

Re: change 2D array index value

moderator1983 — Wed, 29 May 2013 10:03:21 GMT

Index to an array is an integer, it can't be float.

Re: change 2D array index value

megastar — Wed, 29 May 2013 10:15:59 GMT

Ya 1024 rows and 1280 columns, index starts at 0 and ends at 1023, now i want to change this index starting from 0.5 to 512

only change of index

index element Index element

0 5 0.5 5

1 10 1 10

2 8 1.5 8

. . . .

1023 6 512 6

Re: change 2D array index value

NapDynamite — Wed, 29 May 2013 10:23:56 GMT

Index of an array can't be in float, it's an integer. However, from your problem I see that you want to make the size of your array to half i.e an array of dimensions 1024x1280 INTO 512x640, right?

Re: change 2D array index value

moderator1983 — Wed, 29 May 2013 11:27:41 GMT

Try this VI...!!

so by keeping this (attached) VI in between, you may consider that the index has changed from 1..1023 to 0.5..511.5.