Qwt Side-bySide bar charts/graphs

[bwnicewo]

Is there any way in Qwt v5.2.1 to do side by side bar graphs with multiple sets of data colored differently to distinguish between the two? I'm trying to be specific in my question as possible. I'm right now using a HistogramItem but there is no way (that I know of) to attach more than one HistogramItem to a QwtPlot without upgrading to v.6.0.1 and using QwtBarItem and using that.

[Uwe]

In fact you would need to upgrade to SVN trunk ( 6.1 ), where you find a QwtPlotMultiBarChart item. Its "Grouped" ( in opposite to "Stacked" ) mode should be what you are looking for. Check the barchart example.

The redesign made in Qwt 6.0 was to primarily to make it possible to introduce new types of plot items - without having to duplicate too much code - and Qwt 6.1 will be the release that introduces them.

Uwe

PS1: I remember there was once ( years ago ) a patch for Qwt 5.x ( or even maybe Qwt 4.x ) - maybe you find it in the mailing list archive.
PS2: Stay away from QwtPlotBarChart - its implementation is not finished.