extract data from .txt to array

[marscru]

hi all,

I m pretty new to labview and already searched quite a few forums.

My problem is:

I got 2 .txt file with numbers - all seperated by tabs - 12 columms and 5 rows each.

I want to extract each number columm by columm and row by row to labview to be able to substract both .txt file. Basically I got 2 Tables with number and I want to calc. the difference in each line and row.

How can I get the numbers out of my .txt file to do some math with them?

thnx for any help!

[ejensen]

'Read from Spreadsheet File.vi' would be a good place to start. This will allow you to load the text file in to LabVIEW as an array.

[Antoine Chalons]

QUOTE (marscru @ Mar 11 2009, 01:55 PM)

hi all,

I m pretty new to labview and already searched quite a few forums.

My problem is:

I got 2 .txt file with numbers - all seperated by tabs - 12 columms and 5 rows each.

I want to extract each number columm by columm and row by row to labview to be able to substract both .txt file. Basically I got 2 Tables with number and I want to calc. the difference in each line and row.

How can I get the numbers out of my .txt file to do some math with them?

thnx for any help!

Hi

If your text files really only have this :

1   1   1  .  .  .
4   5   7
7   5   8
.
.
.

Then this will do the job

http://lavag.org/old_files/monthly_03_2009/post-7452-1236777963.png' target="_blank">

Side note, if someone can tell me why the substract doesn't work on 2D array when they have the same dimension sizes

[TobyD]

QUOTE (Antoine Châlons @ Mar 11 2009, 05:26 AM)

http://lavag.org/old_files/monthly_03_2009/post-7452-1236777963.png' target="_blank">

Just curious...why did you use the sequence structure here?

[Antoine Chalons]

QUOTE (TobyD @ Mar 11 2009, 03:14 PM)

Just curious...why did you use the sequence structure here?

Because when I tested it on my computer I disconnected the path constants and I wanted to know which file was loaded first.

I would have made the dependence with an error wire instead if I could but the 'read spreadsheet file.vi' doesn't have any :thumbdown:

[TobyD]

QUOTE (Antoine Châlons @ Mar 11 2009, 06:32 AM)

Because when I tested it on my computer I disconnected the path constants and I wanted to know which file was loaded first.

I would have made the dependence with an error wire instead if I could but the 'read spreadsheet file.vi' doesn't have any :thumbdown:

:thumbup: OK