Problems with "help" and "doc" in R2014b

Question

K E 2015-2-3

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/174958-problems-with-help-and-doc-in-r2014b

评论： K E 2015-3-6

采纳的回答： Sean de Wolski

在 MATLAB Online 中打开

After installing R2014b, help and doc commands no longer work correctly. Is there a fix? Some background:

help followed by any function name returns a fileparts error (example below)
doc sometimes crashes Matlab, sometimes results in an error (example below), and sometimes opens up a help window as expected

help clear % Trying to display command window help for "clear" function
Error using fileparts
Too many output arguments.
Error in makehelphyper (line 73)
[unused fcnName unused unused] = fileparts(fcnName);
Error in help>displayHelp (line 211)
    helpStr = makehelphyper('help', pathname, JRI_linkableTopic,
    helpStr);
Error in help (line 130)
        displayHelp(helpStr, topic, usejava('desktop'));
doc quantile % Trying to open standalone help window for "quantile" function
Too many output arguments.
Error in help (line 138)
    [varargout{1:nargout}] = [helpStr moreInfo];
Error in help2xml (line 48)
[helpstr, docTopic] = help(topic, helpCommandOption);
Error in help2html (line 20)
[helpNode, helpstr, fcnName, found] = help2xml(dom, topic, pagetitle,
helpCommandOption);
Error in helpwin (line 76)
    html = help2html(topic,pagetitle,helpCommandOption);
Error in doc>showHelpwin (line 221)
    foundTopic = helpwin(topic, '', '', '-doc');
Error in doc (line 112)
            if ~showHelpwin(topic)
138     [varargout{1:nargout}] = [helpStr moreInfo];

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Adam 2015-3-5

Do you have a function of your own named fileparts?

K E 2015-3-5

Only this, C:\Program Files\MATLAB\R2014b\toolbox\matlab\iofun\fileparts.m

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Answer 1

Sean de Wolski 2015-3-5

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链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/174958-problems-with-help-and-doc-in-r2014b#answer_170179

在 MATLAB Online 中打开

It looks like it's using a help command from an earlier release (fileparts does not currently support four outputs)

Try refreshing the path

restoredefaultpath
rehash toolboxcache

If it works after that;

savepath

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Sean de Wolski 2015-3-5

restoredefaultpath is a nuke it from orbit approach.

K E 2015-3-6

[If someone is thinking of trying this solution, I suggest copying pathdef.m to a temporary file first, so you can restore your personal path directories afterward.]

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