New install: Undefined function 'isstring' for input arguments of type 'char'.
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I just installed Matlab 2015 and get the following error upon starting the program:
> In matlabrc (line 228)
Undefined function 'isstring' for input arguments of type 'char'.
Error in fileparts (line 41)
if isstring(file)
The same "Undefined function 'isstring'..." appears in a dialog box whenever I try to open any script or function. However I know that I have isstring...
>> which isstring
C:\Program Files\MATLAB\R2015a\toolbox\matlab\codetools\@mtree\isstring.m % mtree method
I have 2019a installed on my machine and it works perfectly fine.
采纳的回答
Steven Lord
2020-7-24
I think you have a fileparts.m that you downloaded or wrote on your path ahead of the one included in MATLAB. When I opened release R2015a line 41 was:
ind = find(file == '/'|file == '\', 1, 'last');
Check which fileparts function you're running:
which -all fileparts
更多回答（1 个）
madhan ravi
2020-7-24
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2 个评论
Kelsey Dutta
2020-7-24
madhan ravi
2020-7-24
It’s because the function “isstring()” was introduced in 2016b you can’t use it in 2015a, I don’t know how to explain more clearly than this.
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