alketi
11th March 2013, 23:10
Hi Uwe,
Thank you again for all your hard work for the community.
I have a feature request for your consideration, and it looks like the feature requests have been disabled on Sourceforge (https://sourceforge.net/p/qwt/feature-requests/), so I'll post it here:
In some uses, it's a very common thing to have data with missing elements. Currently, to plot gaps or spaces in a waveform it appears that the user must subclass and and begin overriding and customizing functions.
http://www.qtcentre.org/threads/21756-How-to-create-QWT-plot-curve-with-gaps
http://www.qtcentre.org/threads/34261-How-to-make-curves-with-empty-intervals-in-them
http://www.qtcentre.org/threads/45205-Skip-NaN-values-in-qwtplot
For ease-of-use it would be great if this functionality was baked into Qwt. I'd like to suggest a way to do it that already has acceptance and is easily understood by users.
Gnuplot, plplot, and others simply translate "NaN" values into gaps in their curves. That way, if the user want's a blank spot, they just place NaN's in the correct array locations, which can easily be done as part of a data acquisition or in post-processing. (Gnuplot actually provides a further API to let the user define any character as a skip, i.e. set datafile missing '-')
I hope this was the right place for a feature request.
Thanks again.
Thank you again for all your hard work for the community.
I have a feature request for your consideration, and it looks like the feature requests have been disabled on Sourceforge (https://sourceforge.net/p/qwt/feature-requests/), so I'll post it here:
In some uses, it's a very common thing to have data with missing elements. Currently, to plot gaps or spaces in a waveform it appears that the user must subclass and and begin overriding and customizing functions.
http://www.qtcentre.org/threads/21756-How-to-create-QWT-plot-curve-with-gaps
http://www.qtcentre.org/threads/34261-How-to-make-curves-with-empty-intervals-in-them
http://www.qtcentre.org/threads/45205-Skip-NaN-values-in-qwtplot
For ease-of-use it would be great if this functionality was baked into Qwt. I'd like to suggest a way to do it that already has acceptance and is easily understood by users.
Gnuplot, plplot, and others simply translate "NaN" values into gaps in their curves. That way, if the user want's a blank spot, they just place NaN's in the correct array locations, which can easily be done as part of a data acquisition or in post-processing. (Gnuplot actually provides a further API to let the user define any character as a skip, i.e. set datafile missing '-')
I hope this was the right place for a feature request.
Thanks again.