[ scidavis-SciDAVis Feature Requests-3107127 ] background analysis / subtraction

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SciDAVis Feature Requests item #3107127, was opened at 2010-11-11 08:27
Message generated for change (Tracker Item Submitted) made by knut_f
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Category: General
Group: None
Status: Open
Priority: 5
Private: No
Submitted By: Knut Franke (knut_f)
Assigned to: Nobody/Anonymous (nobody)
Summary: background analysis / subtraction

Initial Comment:
> > [2010-11-09 08:34] Vit <vi...@gm...>:
> >> Is it possible to subtract a straight line (not horizontal) from the
> >> curve on the graph? With out switching to the data table, adding
> >> another column etc...
[...]
> I imagine this like putting two point on the graph, plotting line though
> them and subtracting resulting curve (line) from the graph. We use this
> for spectral data analysis, for background subtraction, and now trying to
> replace origin (and sometimes Windows completely on our machines). In
> general operations with curves (summing and subtracting) is very useful
> for visual data analysis. I know it could be done with the columns, but
> when they are located in different tables it's not so simple sometimes.


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