Plotting around 1000 shape items in qwt polar/ qwt plot. Help needed.

[Uwe]

My application is having a requirement of receiving (on TCP socket) and plotting upto 1000 custom shape items (mostly rectangular/ circular shapes) on qwt ploar as well as qwt plot.

First of all you need to be clear about the difference between a shape and a plot item using a symbol: A symbol represents a point ( plot coordinate ), while a shape is a figure made of plot coordinates. Thus position and size of a shape item depend on the scales of the plot, while for the symbol the size is fix only the position is related.

What type of use case do you have ?

Uwe