Colormap editor window size is huge and cannot be resized bug

when opening colormap edior, the default window is huge, way bigger than my screen.

Any manual resize attemp dont work, it simply dosnt change anything.

Its come to the point where i cannot use the colormap editor.

This is clearly a bug in matlab 2020a

other details:

Matlab 2020a

installed a few days ago on a new laptop lenovo thinkpad 14'' E14

[Andy Black]

I am having the same problem, and I also installed 2020a a few days ago. I am using a Dell XPS-13 running Windows 10. The only thing that helps is quitting MATLAB and starting a new session.

[Adam Danz]

I haven't experienced this problem, although I rarely (never) use colormapeditor.

If restarting Matlab temporarily solves the problem I wonder if there's a specific set of conditions that causes it. Is the problem reproducible?

[Ariane Spir]

I have the same problem and installed 2020a yesterday, and I use the colormap editor fairly frequently.

Restarting Matlab indeed reduce the window back to a normal size, yet not resizable, but the problem quickly return. I haven't yet tried to test this bug (does it gain size every time it's opened ? Is it because of an intern timer ? Is it related to the number of figure opened ?), but I'll maybe try.

[Ojotule Onoja]

I am currently experiencing the same problem using Matlab 2020a colormap.

[Siddhant Desai]

Yup, I have this same problem. It's super annoying. You can use the property inspector instead. Matlab just crashes with the colormap editor.

Answer 1

[Steven Lord]

If you can reproduce this behavior, please contact Technical Support using the telephone icon in the upper-right corner of this page and provide them with the reproduction steps.

[Siddhant Desai]

This is a very common problem with Matlab 2020a. Very annoying as Matlab also crashes sometimes due to this. I don't know if this issue persists in future releases.

[Xingwang Yong]

@Siddhant Desai No, this bug is not fixed. Instead, the colormap editor is totally redigned. So, for users with Matlab 2020a, we have to live with this. See my post here

[Image Analyst]

@Xingwang Yong I don't believe they fix old versions. If there is a fix, it will come out only in new versions. Otherwise they'd have to do exhaustive testing again of dozens of old versions also, instead of just the new version. So if they want the fix, they'll have to install the latest version, which is a good thing for more than just the one bug fix since it will have additional features.

[Xingwang Yong]

@Image Analyst New versions have new bugs, which could be more annoying than old bugs, e.g. copy paste not working in editor, can not edit in colormap editor, APP not scaled properly, etc. In addition, not every one has access to the latest version. So I'll just stick to an old version that is relatively stable.

[Adam Danz]

As mentioned in the previous answer, it's best to contact tech support to report bugs or request enhancements. While discussing issues here can be informative, reaching out to tech support is the most effective way to ensure your concerns are addressed and potentially lead to productive changes.

[Steven Lord]

@Image Analyst "I don't believe they fix old versions."

That depends on your definition of "old". We do provide Update releases, which come out after the general release, that contain bug fixes for some of the issues that have been reported against the general release or in previous Updates. Looking at the downloads, if you try to download release R2020a you'll be installing release R2020a Update 8 which was released on February 17, 2022. You can see that we fixed many bugs in release R2020a and its Updates by looking at the Bug Reports.

For the past couple releases, the latest Updates are:

• R2024a Update 4 (June 13, 2024) with these bug fixes
• R2023b Update 8 (May 16, 2024) with these bug fixes
• R2023a Update 6 (January 19, 2024) with these bug fixes
• R2022b Update 9 (April 2, 2024) with these bug fixes

@Xingwang Yong Given that the latest Update for release R2020a was over two years ago, I have to say it's unlikely we're going to release a new Update for that release. But if you see other bugs that are preventing you from upgrading or updating, please contact Technical Support to report those bugs so their fixes can be considered for a future Update.

The descriptions of the ones you gave are pretty brief, but none of the ones you described sound familiar off the top of my head. [Looking back in the Bug Reports going back to release R2017a I find only one that includes the word "colormap" and that's a Signal Processing Toolbox that uses the word not the colormap command or the Colormap Editor.]

[Xingwang Yong]

@Adam Danz @Steven Lord For this colormap editor bug in 2020a, I do contact support 3 or 4 years ago. They told me it is "fixed" in 2020b, which turns out to be a completely a new colormap editor with other bugs, see this post. I do not hope for a direct fix for this bug in 2020a, given it is an old version and probably only a small set of people are affected by it. The reason I post here is to make other users aware of this bug so next time they have the problem they can just search and know it is a known bug.

For other bugs, I contacted support, too. Most of the time, they told me the bug will be fixed in the future, which I can not confirm.

Answer 2

[Image Analyst]

I just ran

>> colormapeditor

in r2024a and the default/initial window size is 538 pixels wide by 507 pixels high (verified by doing a screen capture and checking it in Adobe Photoshop), which is just a small portion of my screen. Additionally, it is resizeable and scalable. What initial size were you getting?

[Xingwang Yong]

This bug is on 2020a. Since later matlab versions use a completely new colormap editor, this bug is gone. But for people use 2020a, this bug is still there.