How to convert Matlab scatterplot axis to display pixels
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I am drawing a circle via scatterplot and it plots it in the form of arbitrary units. I want those units to be in pixels so I can run some further algos on them. Imdistline doesn't do much as it only displays the distance in terms of the arbitrary units.
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Adam
le 10 Fév 2017
Set the XLim and YLim properties of your axes to match the 'Position' property of your axes (doing the obvious maths to go from the start, size represented by position to the start, end needed by xlim and ylim), either relative to the figure (i.e. taken directly from 'Position' with the origin the same) or relative to the axes start (i.e. origin at 0 and x and y lim just set to the size of the axes).
Then draw your circle and it will be in pixel space.
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Walter Roberson
le 10 Fév 2017
Modifié(e) : Walter Roberson
le 12 Fév 2017
You can set the axes Units property to Pixels and set an appropriate Position after that.
This will not affect algorithms though. It would perhaps make it slightly easier to use the figure CurrentPoint property, but normally you would use the axes CurrentPoint property anyhow.
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Walter Roberson
le 27 Fév 2017
It is not clear which coordinates you want. Axes position coordinates are always relative to the figure, but perhaps you are wanting to make them relative to the screen.
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