> Hi everyone, > Sage notebook is cool, and I am creating some web app with sage cell > server. The problem is, I would like to let my user draw a Region Of > Interest (such as point, rectangle, oval etc.) on an image, but currently I > can't find such a widget allow me to do that. > > Any suggestion on how to make it happen? > > I don't think this is currently possible in sagenb; we would need to use something with a lot more javascript or using canvas more intelligently. I think William may be trying to implement something like this with graphics in SMC, and some proofs of concept have worked with flot (see e.g. http://www.flotcharts.org/flot/examples/selection/index.html) and other js libraries.
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