changing scaling of several waves at once

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Fri, 06/21/2013 - 12:30 pm

I would like to change the units of a wave from mV to uV(y value) without changing the x-value. I am currently doing it manually to each wave using wave arithmetic and dividing by a constant but I was wondering if someone could suggest a quicker way since I have to do this on about 90 waves in the same folder, for many folders and it's taking up a lot of time.

Thanks for your time.
This should give you a running start. You need to first get the names of waves in the data folder of interest (code below will work on CURRENT datafolder only). Then, in a for loop, perform the desired operation on each wave.

function ya()

string list = wavelist("*", ";", "")

variable i
for(i=0; i<itemsinlist(list); i+=1)
    wave w = $(stringfromlist(i, list, ";"))
    w*=1000   //multiply by 1000 for mV to micro-volt conversion
endfor
end


you can add more code to auto process multiple folders, or, you could have the function accept a string parameter which would be the folder name, just some ideas.

June 21, 2013 at 01:28 pm - Permalink

How about using the "Execute Cmd..." button in the data browser?

The command to enter in the dialog box would be "%s /= 1000" (without the quotes), or maybe "%s *= 1000", depending on what is meant by changing the units from mV to uV.

June 22, 2013 at 05:23 am - Permalink