Overwrite specific value on .txt file
Hello
Does any one know how to overwrite specific values in a .txt file?
here's and example of what i need:
I just want to replace the numbers 1 and 2 every time I run my code, the rest remain the same.
this is the part of the code Im using
thanks!
Hello Tokighy,
What Bryan mentions is a good approach, you can also check the Write to Text File and Read from Text File.vi in the Find Examples section in LabVIEW, you can take the output from the Read from Text File (having as input your .txt file) and then use either Replace Substring or Search and Replace String functions from the String palette.
http://zone.ni.com/reference/en-XX/help/371361H-01/glang/search_and_replace_string/
http://zone.ni.com/reference/en-XX/help/371361J-01/glang/replace_substring/
Hope you find this information useful!
Regards,
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Solved!
Go to Solution.Dan_the_Clam wrote:
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Assuming you have a state machine and an Init state it's a fair use of Local Variables to update controls from the ini-file. The same goes for saving the values.
/Y
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import java.io.*;
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1. a!asdsad
2. @
3. #
4. $
5. %sdfsdf
6. ^
7. &
8. *
9. (
10. )
11. _
12. +sdfsdfsdf
13. -
14. =
15. ~
16. `
17. dfgdfg;
18. :
19. '
20. "fghfghf
21. ,
22. dfgdfg<
23. .
24. >fghfghfg
25. /
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Character Line Number Character Number
[!] [1] [5]
[@] [2] [4]
[%] [5] [4]
[^] [6] [4]
[_] [11] [5]
[+] [12] [5]
[=] [14] [5]
[~] [15] [5]
[`] [16] [5]
[;] [17] [11]
[:] [18] [5]
['] [19] [5]
["] [20] [5]
[,] [21] [5]
[<] [22] [11]
[>] [24] [5]
[?] [26] [29]************************************************************************
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Character Line Number Character Number
[ ] [1] [17]
[ ] [1] [18]
[ ] [1] [19]
[ ] [1] [6530]
[ ] [2] [2041]
['] [29] [1834]
['] [29] [2023]
['] [30] [1834]
['] [30] [2023]
['] [30] [2066]
['] [47] [2066]
['] [67] [2067]
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[ ] [1] [18] Ascii Value: [0]
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Read a txt file, display a table of values, select a value to set min value for DAQMX
Hello everyone, I am having trouble with the following data importing. I want to do the following:
Open a txt file, have it be imported as a table. Allow the user in the GUI to select a value on the 2nd column, set that value as either min or max for a daqmx analog output. I'll attach the .txt file being used. I can add the code but I was basically using the read from text.vi example with no luck.
Attachments:
090414-200-800-16x.txt 1 KBThank you all, I have set up this input but I have a couple more questions. First now that I have the ability to have a mouse click to set a value, is it possible to have two events, such that the first sets a certain value and the second retains a different one?
In addition (im not sure if this would be ok to post here but for the sake of clarity and decluttering the forum I shall post it here) is it possible to switch from a constant voltage mode (in DAQMX analog output) to a waveform mode ( attacthed the binary waveform) all while maintaining a constant min value (untill updated from the table by user, which is also attached).
I have attachted a vi (Labview version 8.2) that I threw together today.
Thank you all,
DB
Attachments:
calib.csv 3 KB
Example.vi 157 KB
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