help does not work

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David Soltysik
David Soltysik am 6 Nov. 2018
Kommentiert: Image Analyst am 4 Aug. 2022
Hello,
I just installed MATLAB R2018b, and now the help command does not work. Even typing "help" or "help help" gives me a response of "help not found".
Was the help function killed? How do I get help to work again?
Thank you.
David

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David Soltysik
David Soltysik am 9 Nov. 2018
After clicking "Set Path" and removing some paths, the help function resumed working.
  1 Kommentar
Michael Reshko
Michael Reshko am 18 Mär. 2019
Could you please provide furtehr details of how to fix this issue? I am alos getting "Page not found" after a new version install. Thanks

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Weitere Antworten (1)

Ba Mo
Ba Mo am 12 Apr. 2019
Bearbeitet: Ba Mo am 12 Apr. 2019
Any chance that the toolbox/suite you installed is PSAT (power systems analysis toolbox)?
The help command in matlab stops working after adding PSAT to matlab's path
that's because the help command of matlab calls a routine called "settings" in the folder: "%matlab-root%\2018a\toolbox\matlab\configtools\settings.m, and psat also has a routine called "settings.m".
When you call matlab's help, you will find the culprit in the file named: "getTopicHelpText" in the sub-function at the bottom named: "useSingleSource(hp)"
to solve this problem, you must change the name of PSAT's file to something else; and cross-check if any other psat files use this routine
alternatively, in matlab's "getTopicHelpText" routine, change the "settings" command.
if the toolbox causing the problem is NOT PSAT, then something similar has happened for other reasons. the thing is, the code to fetch the help-text from any file, is done inside a try-catch-end block in matlab's help routine (help.m)
  4 Kommentare
Nicholas Teong
Nicholas Teong am 4 Aug. 2022
May i know how to remove the path ? i am having the same problem. THanks
Image Analyst
Image Analyst am 4 Aug. 2022
Use the "Set Path" button on the Home tab of the tool ribbon or, in code, use the rmpath function.
Or try
>> restoredefaultpath

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