Hi Ala,
'Create Mask' needs an area selection, not a line selection.
If you want a freehand ROI *enclosed* by the line you draw, use the freehand Selection tool (4th from left) instead of the freehand line tool (5th from left).
If you want to use a freehand line itself (with certain thickness) to become an area selection, use Edit>Selection>Line to Area. If the line thickness is > 1 pixels, there is a restriction: 'Line to Area' assumes rounded edges at the ends of the line, in contrast to the yellow overlay shown. Thus, it won't be a perfect match for the transparent yellow overlay at the ends of the line.
Michael
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On May 31, 2013, at 15:30, ala wrote:
> Hi,
> I want to use freehand line to draw ROI. I was wondering why some commands with selections such as ‘’create mask’’ do not work with ROI drawn using freehand line? Thanks
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May 31, 2013; 1:30pm
