changing extensions

[KF_]

Hi,

I would like to change the extensions of some files with Labview is that possible? It's like 30 filenames in one map, which I want to do in a loop, but the filenames change every month so I need some kind of code that runs through every file in that map in the order they are present.

Tx in advance

[GerdW]

Hi KF,

yes it's possible to change filenames...

[_Ian_]

As GerdW suggests, you can move and rename. You can also copy to a new name.

In the attached (V8.5) I grab all of the files in a directory and using an autoindexed loop create new versions with new extensions. If you don't want the old versions either delete them or use Move as GerdW mentions.

[smercurio_fc]

You can also change the extension using regular expressions:

NOTE: Obviously, the paths as strings would come from a Path to String function. Remember: Don't create paths using strings.

[_Ian_]

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@smercurio_fc wrote:

You can also change the extension using regular expressions:

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Neat (but messing with my head slightly)

In my continuing efforts to understand regex... I think this is doing the following:

\ .  means look for the dot before the file extension then,

([^.\\]+) means start at the beginning of the extenstion (^) look for anything followed by a back slash (.\\) and do this search as many times as possible (+)

$ means match from the end of the string (i.e. after the dot used to indicate the file extension rather than before it)

I think I'm missing something in that middle step - what is the backslash for? Please could someone enlighten me?

Thanks

Ian

[KF_]

great stuff guys, gonna try it out thanks

[smercurio_fc]

The middle part basically matches the pieces of text that are not a period or a backslash. Of this set the rest picks out the last one (which should be the extension). RegExr is a good site to analyzer regular expressions.

[KF_]

Hi,

I have one more problem to start the rest of the code, I used your suggestions and created .lvm files with several columns of numbers, the first column is date and hour though. I need the first 3 columns of numbers (not the dates and hours) to work with, so i need arrays of those. I can't really find how to do that. I attached an example of a .lvm file.

thanks

[KF_]

Never mind I found it, use read spreadsheet with ; as delimiter