How do a pause execution within a file when a specific line produces a warning?

Say I have a main file and a function file. I am getting a 'Matrix is singular, close to singular or badly scaled' warning and I would like to examine the inside of the function to find out what is causing this. So I want to pause the code on this error, view the variables within the function, and then investigate. How do I do this?

Answer 1

[Walter Roberson]

warning('error', 'MATLAB:singularMatrix')
dbstop if error

and run your code.

[Vykta Wakandigara]

Where do I place this command?

[Walter Roberson]

Command line

Answer 2

[Steven Lord]

One of the "conditions" you can specify when you call dbstop is 'warning'.

dbstop if warning

If you prefer to set this debugging condition via the UI, see the "Error Breakpoints" section of this documentation page.