Re: extract data from graph ?

[Alexander Semke]

On 28.03.2018 15:07, CdeMills wrote:
> Hello,
>
> I need to correct a paper containing graphs saved as bitmap images. Those
> images were generated by a scope, and I can't redo the experiment. Is there
> some way to "undo" the graph and get back the curves ?
> I can take the image, apply a differentiator, check for regions of high
> contrast, and map that region back to values. But if some automatic tool
> could do it quickly and without error, it would be better.
Maybe you want to check out LabPlot. We added this feature two years ago 
to LabPlot:
https://labplot.kde.org/2016/03/29/labplot-2-2-0-released/

--
Alexander