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XZ_laser
Switzerland
6 Posts |
 Posted - 07/02/2013 : 10:36:56 AM
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I am using Origin 8.0.63.988 SR6. I don't know if the issue I encounter is still around in the later software versions.
I have been trying to perform linear or 2nd order polynomial fits on sets of data. The tricky thing is that the data points I want to use are not contiguous: one set is near the beginning, one set is near the end, and there is a sizable set of data that I don't want to use in between them.
The main method that I have been using with good success is to first record down the row numbers of the data points that I want to use, duplicate the data set, and then delete out the rows that I don't need. Curve fitting on truncated data is fast (less than a second).
I then discovered the data masking feature, and masked the row numbers that I don't need. However, while curve fitting still works, it's now very, very slow (more than a minute). Any idea why Origin is behaving like this?
For the record, the total number of rows in my data is 10001. For the fitting, I only use <400 rows total worth of data, or about 200 contiguous rows near the beginning and the same number near the end. |
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Data masking and curve fitting
