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Function does not work despite having lisence

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Trevor Harris
Trevor Harris 2016-9-1
评论： Madalina Rîurean 2020-11-24
Hello everyone,
I'm trying to use the pwelch function, which is part of the signal processing toolbox, but I'm getting an error. Check out the screenshot which shows my licence is valid, but still the function does not run. The script I'm trying to run is an example provided in the matlab help file for pwelch (which does come up when I type help pwelch). Any ideas as to what may be going on?
Thanks! Trevor
  2 个评论
michio
michio 2016-9-1
Could you execute
which -all pwelch
to see if you have the function installed.
Madalina Rîurean
Madalina Rîurean 2020-11-24
I have the same problem. Matlab returns 'pwelch' not found. How do I install it?

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回答（1 个）

Star Strider
Star Strider 2016-9-1
Don’t panic! You could simply have a path problem.
Run these from the Command Window or from your script:
restoredefaultpath
rehash toolboxcache
Then give your pwelch call another go.
If that doesn’t work, and you’re still having problems, contact Tech Support.
  2 个评论
Trevor Harris
Trevor Harris 2016-9-1
Thanks for the suggestion. That didn't solve the problem, so I've contacted support. I'll let you know how it goes!
Trevor
Star Strider
Star Strider 2016-9-1
My pleasure. Also, my sympathies. I hope you can avoid reinstalling.

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