Thank you for the bug report, it is very useful. Csaba is working on a fix, it should be ready soon.

Until then, a workaround is to grab the slider handle below the white chart area (somewhat tricky, but you should be able to do it) and drag it all the way to the right.

No, thank you two for all the efficient solutions you always give to our issues.

I managed to see the colors with your workaround.

The issue has two parts:

• Crash when clicking in the empty chart view with invalid (0,0) range. This has been fixed in VTK, see PR https://github.com/Kitware/VTK/pull/49
• The transfer function not showing up because of the invalid (0,0) range. Fixed in CTK, see PR https://github.com/commontk/CTK/pull/789
  When the CTK PR is integrated and Slicer CTK hash updated, then this problem should be gone. Integrating the VTK PR solves a lower level issue, which shouldn't occur if the CTK fix is applied.

Hi Csaba,

In your PR for VTK they say that you should contribute to theit GitLab repository, instead of on GitHub.

Yeah I decided I'm not jumping through their hoops of their private (!) gitlab, and as I saw dozens of PRs on github I went for it. I guess I need to register to their gitlab then.

Fernando, where did you see this message? I cannot see anything in my PR.

It's included in your own PR message: https://github.com/Kitware/VTK/pull/49#issue-174741708

"Thanks for your interest in contributing to VTK! The GitHub repository
is a mirror provided for convenience, but VTK does not use GitHub pull
requests for contribution. Please see

https://gitlab.kitware.com/vtk/vtk/tree/master/CONTRIBUTING.md

for contribution instructions. GitHub OAuth may be used to sign in."

https://gitlab.kitware.com/vtk/vtk/merge_requests/4065

The CTK PR is in, so setting this to resolved, because the symptom in this issue is now gone. Please close if you can confirm. Thanks!

I can't confirm yet since latest Nightly on macOS 4.9.0-2018-03-16 r27085, and this issue is still present on that version.

Please wait for one where the fix is expected to be present :) Factories are not very reliable these days...

For future reference, corresponding VTK changes were integrated into Slicer in r27113

Closing since I can't reproduce on macOS r27112.

Closing since I can't reproduce anymore on macOS r27112.