Is there any open-source or free chart library for Qt? I only need XY charts, not bar charts or anything else.
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QCustomPlot is a rather compact Qt widget for plotting, with the possibility of extension to your needs, under the GPL license. It has no further dependencies and is fully documented, including internal functions.
Check the QCustomPlot website.
Blackhole
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Luciano Lorenti
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1Found that stuff, and was very impressed! Its great! – NG_ Oct 16 '12 at 17:57
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4Unfortunately it has that GPL license... – Jul 12 '14 at 05:07
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@JosephMalicke: build it as separate process with open code and communicate over IPC – Valentin H Jul 08 '16 at 21:07
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There's two I know of:
rubenvb
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Just FYI: I just found out QtiPlot uses Qwt internally, so it might be better to just use Qwt for all your plotting needs directly :) – rubenvb Nov 27 '10 at 17:40
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I like the Qt Commercial Charts but they are "Commercial" http://qt.digia.com/Product/Qt-Add-Ons/Charts/ – Lilian A. Moraru Mar 26 '13 at 16:41
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1Where the offical website is http://www.kdab.com/index.php?option=com_content&view=article&id=55&Itemid=65 KD Chart is dual-licensed, commercial and GPL. There is no public download page, one might have to contact KDAB to obtain it. Projects like KOffice also have it in their repositories. – Frank Osterfeld Aug 21 '10 at 15:38
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perhaps you can get some versions from following repository (check out 28094257): https://projects.kde.org/projects/kde/kdeedu/ktouch/repository/show/src?rev=master – S.M.Mousavi Nov 01 '15 at 06:35