how do i set drawrectangle to have a specific increment only?

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Adrian Lee
Adrian Lee 2020-11-4
回答： Sylvain 2020-11-4
I am trying to use drawrectangle
but what i want is the drawrectangle to have a specific increment ie: 0.5, 1.0...
but when i am using drawrectangle, after dragging to a different shape, the length, width, x coordinate and y coordinate will have some values such as
ROI moved current position: [3.50552486187845 3.89719626168224 5 5]
the values above are taken via a listener
instead of the above values, i want the values of the drawrectangle to be set as
ROI moved current position: [3.5 3.5 5 5] increments of 0.5
is that possible?
can it be done in the listener function?

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回答（1 个）

Sylvain
Sylvain 2020-11-4
you can set the property "Position" of an existing rectangle:
A=drawrectangle; %draw a rectangle
A.Position=[0.5 0.2 0.35 0.2] %modigy the position
Or you can set this property directly:
B= drawrectangle("Position",[3.5 3.5 5 5])
you can resize the axes to make it visible:
set(gca,"XLim",[0 6],"YLim",[0 6])

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