Hi,

I have an application that draws a line plot of  a spectrum. When the 
spectrum is collected different gains and filters may be used for each 
data point (which I have also collected). I am looking at artefacts in 
the spectrum and trying to correlate them with things such as the gain 
and filter changes etc.

On the application I have a number of radio buttons, when clicked will 
add a scatter plot of the datapoints but color coded by the item of 
interest.
i.e.
click the gain btn  I end up with the line plot, and each data point has 
a color coded dot whose color is keyed to the gain the data point was 
taken at.
click the filter btn  I remove the gain scatter plot, and add a filter 
scatter plot where each data point is color coded with the filter used.

This functionality work fine.

However if I am zoomed in on my graph looking at detail, then click the 
radio button, the scatter plot forces the graph to resize to once again 
show the overall intial view (zoomed out).

I am wondering how can I add the scatter plot, without changing the 
current view (zoom level) that I am currently using, but still add all 
the scatter plot data?

Any suggestions gratefully accepted.

Steve


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