ROI - limiting the length of a crosshair

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Teshan Rezel
Teshan Rezel 2021년 3월 19일
댓글: Teshan Rezel 2021년 3월 22일
Hi there,
I am currently displaying a circle and crosshair together on one image. However, is it possible to do this without showing the whole length of the crosshair? I want it to end at the radius of the circle.
Below is an image of what I'm currently getting. I'd like to make it such that the crosshair ROI doesn't extend past the circle ROI. Is this possible?
h = images.roi.Crosshair(gca, 'Position', position6, 'Color', 'w');
h = images.roi.Circle(gca,'Center', position6,'Radius',100, 'Color', 'w', 'FaceAlpha', 0);
h = images.roi.Crosshair(gca, 'Position', position7, 'Color', 'w');
h = images.roi.Circle(gca,'Center', position7,'Radius',100, 'Color', 'w', 'FaceAlpha', 0);
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Teshan Rezel
Teshan Rezel 2021년 3월 19일
@Image Analyst good point, I've updated it!

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Tarunbir Gambhir
Tarunbir Gambhir 2021년 3월 22일
편집: Tarunbir Gambhir 2021년 3월 22일
I see that you are trying to shorten the size/length of the displayed crosshair. I do not see any property of the crosshair function that might allow you to do so. I have notified the concerned developers regarding this request.
If you just want to display the crosshair on top of the image, you could try the following as a workaround to it:
hold on;
plot(position6(1),position6(2),'r+', 'MarkerSize', 50);
h = images.roi.Circle(gca,'Center', position6,'Radius',100, 'Color', 'w', 'FaceAlpha', 0);
Note that you would not be able to interact with this marker on the image as you can with a crosshair object.
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Teshan Rezel
Teshan Rezel 2021년 3월 22일
thank you, this works beautifully!

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