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can't draw ROIs with iViewer

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can't draw ROIs with iViewer

Postby jcopeland » Fri Jun 08, 2018 3:29 pm

Hello,

I have installed iViewer on our test server. I can view images but I cannot draw ROIs. When I select an ROI tool the cursor does change its function and continues working as the select tool.

Any suggestions?

Jay
Jay Copeland
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Harvard Medical School
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220 Longwood Avenue
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Re: can't draw ROIs with iViewer

Postby wmoore » Fri Jun 08, 2018 3:48 pm

To draw a shape e.g. Rectangle, you have to click to start and click to stop. Not drag (as you do with other libraries).
This is because the drag is used to pan the image.
It's the way that OpenLayers works (which is the ROI library we're using).

I hope that's the only problem.
I know it's not that intuitive and takes a bit of getting used to, but it kinda makes sense in some ways.
I tried to highlight the behaviour on the video at https://www.openmicroscopy.org/omero/iviewer/

Hope that helps,

Will.
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Re: can't draw ROIs with iViewer

Postby jcopeland » Fri Jun 08, 2018 3:59 pm

Thank you. That works great.

I do have another issue, however. Max projection does not seem to work. Should I create a new topic?

Jay
Jay Copeland
Manager, Image Management Core
Harvard Medical School
Goldenson 504A
220 Longwood Avenue
Boston, MA 02115
https://imc.hms.harvard.edu
jcopeland
 
Posts: 15
Joined: Fri Apr 20, 2012 7:06 pm

Re: can't draw ROIs with iViewer

Postby wmoore » Fri Jun 08, 2018 8:17 pm

Hi Jay,
I assume you're working with a tiled image? Unfortunately Z-projection doesn't work on tiled images and this issue is not just in iviewer. It needs fixing in the underlying webgateway.
https://trello.com/c/CWNy6puI/386-web-r ... projection

I'll add your feedback to that ticket and we'll try to address it soon.

Regards,

Will
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Re: can't draw ROIs with iViewer

Postby wmoore » Fri Jun 08, 2018 10:24 pm

UPDATE: As far as I can see, the OMERO Rendering Engine doesn't support rendering a region AND projection yet, so this will need a fix in the server and an API change (a major release) so this won't be fixed as soon as I'd hoped I'm afraid.

Regards,
Will.
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