As you can see from the picture, I have a fitted curve in the clampfit. What I need to do is to subtract the linear part (0-20) from the whole curve. This is can be done easily in Igor but how can i do it in Clampfit?
It is unclear what is meant by "subtract the linear part": subtract the slope? remove the segment from the plot? subtract the values?
Clampfit generates a sheet with the fit parametres, so you can adjust the function directly.
That is what I meant by subtracting the linear part. If you look at this linear part (0-20), you would expect that it will continue like that throught the whole figure. But actually, the values later continue to divert from the expected linerity. What I want to investigate is the non linear part. I'm trying to find a way to subtract the whole figure from the hypothetical linear figure (that should have been linear through the whole part). Then it should give me the values of zeros (0-20), and some values in the part that divert from lineraty. Apostolos Mikroulis
In that case, one would simply do a second, linear fit (for the initial segment), and then subtract the 2 fits. Clampfit has some functions to do simple arithmetic on columns for the last step, if I recall correctly, although an extra spreadsheet might be needed.
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