take waves from a 2-D matrix and assign each wave a name from a stringlist

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Fri, 03/24/2017 - 11:10 am

What would be the correct syntax for extracting a string from a string list and then assign that string to a name of a wave?
I can never get the compile to pass, sigh...
Thank you thomas and A.G., I don't have Igor7 installed yet. I downloaded demo and see what the function is. Is there a way to see "inside" of functions contained in Igor?

March 30, 2017 at 03:12 pm - Permalink

mwpro wrote:
What would be the correct syntax for extracting a string from a string list and then assign that string to a name of a wave?
I can never get the compile to pass, sigh...


It's not clear from your question whether your string list is a list of names of already existing waves or is a list of names to be used when creating new waves. Consequently, there are two possible solutions.

For both cases use sName = StringFromList(index, listStr  [, listSepStr ]) to get a list item. I suggest you look up the StringFromList function in command help to get a better understanding of the syntax.

Then, for the first case, get a reference to the wave with Wave wTemp = $sName .

For the second case, create the wave and get a reference to it with something like the following:
Make/O $sName
Wave wTemp = $sName


Here's a snippet to demonstrate how the second case could be used:
Function Test()
    String sList = "Name1;Name2;Name3"
    String sName = ""
    Variable nIndex = 0
    Do
        sName = StringFromLIst(nIndex, sList, ";")
        if( StrLen( sName ) == 0 )
            break
        endif
        Make/O/N=5 $sName
        Wave wTemp = $sName
        print wTemp
        nIndex += 1
    While(1)
End


This example is fine for version 6.xx of Igor.
Hope this helps.

March 31, 2017 at 05:44 am - Permalink