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Canvas plot with ratio="autot" results in interaction errors #354

scottwittenburg opened this issue Jul 2, 2018 · 1 comment


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scottwittenburg commented Jul 2, 2018

When doing canvas.plot() using ratio="autot" and canvas.interact(), the longitude values given by the interaction popups are increasingly erroneous as you move away from center (longitude = 0) of the plot.

This was recently raised as an issue on vcs-js, see here. It can be reproduced as follows:

import vcs, cdms2

cltfile =, ""))
clt = cltfile("clt")
canvas = vcs.init(geometry={'width': 800, 'height':600})
box = canvas.createboxfill()
canvas.plot(clt, box, ratio="autot")

See the issue linked above for more details and screenshots.

@scottwittenburg scottwittenburg changed the title Canvas plot with ratio="autot" results in interaction errors Canvas plot with ratio="autot" results in interaction errors Jul 2, 2018
@doutriaux1 doutriaux1 self-assigned this Jul 2, 2018
@doutriaux1 doutriaux1 added the bug label Jul 2, 2018
@doutriaux1 doutriaux1 added this to the 8.1 milestone Jul 2, 2018
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jypeter commented Jul 3, 2018

This sounds a lot like #251, but the issue was closed

@doutriaux1 doutriaux1 modified the milestones: 8.1, 8.2 Mar 27, 2019
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