For open polygons, right-click the line icon (5th tool form the left) and select "Segmented Line".
> wayne,
> Sorry to bother you again, do you know how to stop the auto-close feature for Polygon selections?
> (when I draw an ROI with polygon selection, the ROI often closes automatically before I finish it)
> Best,
> Ping
>
>> Date: Sat, 7 Feb 2015 14:07:20 +0000
>> From:
[hidden email]
>> Subject: Re: ROI questions
>> To:
[hidden email]
>>
>> On Feb 7, 2015, at 5:27 AM, WangPing <
[hidden email]> wrote:
>>>
>>> Hello everyone,
>>>
>>> I have two questions about using ImageJ:
>>>
>>> 1. Can I rotate an ROI that is drawn manually on the image?
>>
>> Use the Edit>Selection>Rotate command.
>>
>>> 2. How to change the line color of the ROI drawing?
>>
>> Use the Edit>Options>Colors command to change the default selection color. Double click on the point tool icon as a shortcut. Use the Edit>Selection>Properties command to change the color of the current selection. Press the “y” key as a shortcut. In the “Properties” dialog you can change the selection’s name, its stack position, its stroke color and its fill color. To set a color, enter a name such as “red”, “yellow”, etc., or a three digit hex number, for example “00ff00” (green). Enter a four digit hex number to set a transparent color, for example “80ff0000” (50% red).
>>
>> -wayne
>>
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