Convert text wave into numeric wave and vice versa

// Handy Function to convert numeric waves into text waves Function ConvertNumWvToTxtWv(W) Wave W Variable np = numpnts(W) Make /T /O /N=(np) TxtConvert Variable x for(x=0;x<np;x+=1) TxtConvert[x] = num2str(W[x]) endfor End // Handy Function to convert text waves into numeric waves Function ConvertTxtWvToNumWv(W) Wave /T W Variable np = numpnts(W) Make /O /N=(np) NumConvert Variable x for(x=0;x<np;x+=1) NumConvert[x] = str2num(W[x]) endfor End

thomas_braun

How about using a wave assignment instead of a loop?

Function ConvertNumWvToTxtWv(W)
Wave W
 
Make /T /O /N=(numpnts(W)) TxtConvert
TxtConvert[] = num2str(W[p])
endfor
End
 
Function ConvertTxtWvToNumWv(W)
Wave /T W
 
Make /O /N=(numpnts(W)) NumConvert
NumConvert[] = str2num(W[p])
End

August 28, 2014 at 04:10 am - Permalink

ken.berglund

We don't need a function:

Make /T /O /N = (numpnts(W)) TxtConvert = num2str(W[p])
 
Make /O /N = (numpnts(W)) NumConvert = str2num(W[p])

July 21, 2025 at 01:46 pm - Permalink

chozo

Note that this is generally not such a good idea, since there is the possibility to loose precision on the way (especially when using num2str()). See:

•Make/D/O test = e^p
•print/D test[100]
  2.688117141816125e+43
•Make/T/O/N = (numpnts(test)) TxtC = num2str(test[p])
•Make/D/O/N = (numpnts(TxtC)) NumC = str2num(TxtC[p])
•print/D NumC[100]
  2.6881e+43

You would at least want to control the precision, which can be done from Igor 9 onward using an optional formatStr.

July 21, 2025 at 11:38 pm - Permalink

Convert text wave into numeric wave and vice versa

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