Why am I getting these plot warnings?

2018 10 31
4 个回答
更新时间：2019 12 27
3 次查看（30 天）

1 个投票

I am trying to do some simple plotting, plot(diff), and I keep getting these warnings Warning: Error updating Button. Not enough input arguments. at least 50 times before stopping. What Button is it talking about and how do I turn off these warnings?

2 个评论
显示 无 隐藏 无

Walter Roberson
Walter Roberson 2018-10-31
Please show your code.
the cyclist
the cyclist 2018-10-31
编辑：the cyclist 2018-10-31
I would modify Walter's suggestion slightly, to recommend that you try to simplify your code down to the smallest version that exhibits the problem, and post that code.
In my experience, that process itself often exposes the bug.

请先登录，再进行评论。

请先登录，再回答此问题。

回答（4 个）

Ellen Braden
Ellen Braden 2018-10-31

0 个投票

diff is a difference between two arrays, diff = posA(:,1) - posB(:,1). posA and posB are the same size. Then I plot diff, plot(diff). That's it.

1 个评论
显示 -1更早的评论 隐藏 -1更早的评论

Walter Roberson
Walter Roberson 2018-10-31
So your code just looks like loading some values into posA and posB, then
diff = posA(:,1) - posB(:,1);
plot(diff)
??
Note: it is not recommended to use diff as the name of a variable, as it is the name of a commonly used function.

请先登录，再进行评论。

Ellen Braden
Ellen Braden 2018-11-1

0 个投票

Even if I change it to posdiff = posA(:,1)-posB(:,1), plot(posdiff) I get the same warnings
Robert Barretto
Robert Barretto 2018-11-22

0 个投票

I have the same issue with Matlab 2018b. Luckily I can confirm that my code on Matlab 2016b does not produce this problem.
This is true on both Mac and PC.
Capture.PNG

9 个评论
显示 7更早的评论 隐藏 7更早的评论

Walter Roberson
Walter Roberson 2018-11-22
I am still waiting to see code.
Walter Roberson
Walter Roberson 2018-11-22
Try
restoredefaultpath;
rehash toolboxcache
Robert Barretto
Robert Barretto 2018-11-22
Walter that's fantastic:
You were spot on -- once i saw default path -- I knew I had to check my old libraries. Turns out I have a convex optimization library that likes to run it's own nargchk.
http://ask.cvxr.com/t/cvx-setup-error/4053/2
Just removed from path and good to go.
Thanks and happy thanksgiving!
Ellen Braden
Ellen Braden 2018-11-26
Worked for me too! Thanks
Kenny Nona
Kenny Nona 2019-6-17
this, however, deletes the dependencies to installed libraries such as those installed for speedgoat.
Walter Roberson
Walter Roberson 2019-6-17
You would add those in a few at a time until you encountered the problem again, to isolate which one is causing the problem. You would add them at the end of the path instead of at the beginning of the path.
If a library provides its own function with the same name as a MATLAB function, and it does not take care for compatibility, then you pretty much need to edit the library if you want to be to use the library with MATLAB without problems.
John
John 2019-8-20
Thank-you Walter Roberson! I suddenly had the same problem. Something crept into my extensive paths. Now I have to reverse engineer and find the culprit in my paths.
Try
restoredefaultpath;
rehash toolboxcache

请先登录，再进行评论。

Stijn Helsen
Stijn Helsen 2019-8-26

0 个投票

I had the same problem, and the provided solution solved my problem.
Thank you!!

类别

在 帮助中心 和 File Exchange 中查找有关 Programming 的更多信息

产品

版本

R2018b

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by