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#415 Strange fit results with SciDAVis 1.25

next
fixed
nobody
None
4normal
2021-06-07
2021-03-03
No

Hi,
Every spring, I use SciDavis in a biochemistry lab course with about 70-80 undergraduates, and nearly every year, someone finds a new way to break it! It looks like this year is no exception.
The problem we have found arises when a simple 2-dimensional data graph is made with one of the columns set to text data, instead of numeric, and then a curve fit is attempted. Of course, that is something that shouldn't be done, but the program doesn't object and plots a curve that looks like a perfectly nice fit. But, the parameters for the fit are wacky. If the data type is then changed to numeric, the data points stay where they wore, but the fit curve changes to reflect the wacky parameters.
To my way of thinking, the program would be well within its rights to tell the user that it won't do a curve fit with text data. But, this is really perverse and took quite a while to figure out!
This behavior occurs with both Mac OS 10.14 and Windows 10.

If this can be fixed I would be greatly appreciative.

Thanks,
David

Discussion

  • Suthiro

    Suthiro - 2021-06-03

    Fixed here. Now SciDAVis will issue a warning if any of the axis is non-numeric (either x or y).

     
  • Suthiro

    Suthiro - 2021-06-03
    • status: open --> fixed
     
  • David Goldenberg

    Thanks very much. Unfortunately, I will probably have to wait until version 2.x is available on MacOS before I can take advantage of this fix.
    David

     

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