Why is it showing: Undefined function or variable 'removeStopWords'.

2018 11 5
2 个回答
更新时间：2018 11 26
60 次查看（30 天）

0 个投票

Dear I am using R2017B with text analytics software installed(I have checked by searching get add-ons). I have written a simpole function which is following:
function x=test()
s='i am a boy and u r a grl';
disp(removeStopWords(s));
end
And it shows the following error:
Undefined function or variable 'removeStopWords'.
Would you please shed light on this issue explaining why is this happening?
Thanks,

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回答（2 个）

Walter Roberson
Walter Roberson 2018-11-5

2 个投票

https://www.mathworks.com/help/textanalytics/ref/tokenizeddocument.removestopwords.html
Introduced in R2018b
madhan ravi
madhan ravi 2018-11-5
编辑：madhan ravi 2018-11-5

0 个投票

An example of the correct usage as documented
function x=test() %EDITED
s= tokenizedDocument([ 'i am a boy and u r a grl']);
disp(removeStopWords(s));
end

11 个评论
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Saugata Bose
Saugata Bose 2018-11-5
@madhaban ravi : I am srry that I cant accept this example. i knw this example. but if you read my query carefully, I ask that, the error displays,
Undefined function or variable 'removeStopWords'.
Although I have installed all the toolboxes.
madhan ravi
madhan ravi 2018-11-5
Type
ver
in command window and paste what shows there
madhan ravi
madhan ravi 2018-11-5
编辑：madhan ravi 2018-11-5
Also try my edited answer
madhan ravi
madhan ravi 2018-11-5
Please before putting up a comment try my edited answer and then comment!
Saugata Bose
Saugata Bose 2018-11-5
Sorry dear. The main problem here is, the program is not finding the removeStopWords function..... :(
madhan ravi
madhan ravi 2018-11-5
编辑：madhan ravi 2018-11-5
Ok what showed up when you typed ver? Also try
which removeStopWords
in command window and paste your result here
Saugata Bose
Saugata Bose 2018-11-5
this is interesting. it displays "'removeStopWords' not found." do you have any suggestions in this case.
madhan ravi
madhan ravi 2018-11-5
Then I suspect you haven’t installed Text Analytics toolbox , ok what showed up when you typed
ver
in command window?
Saugata Bose
Saugata Bose 2018-11-5
it is installed. and its shown in var as well.
MATLAB Version: 9.3.0.713579 (R2017b)
MATLAB License Number: 123456
Operating System: Microsoft Windows 10 Pro Version 10.0 (Build 17134)
Java Version: Java 1.8.0_121-b13 with Oracle Corporation Java HotSpot(TM) 64-Bit Server VM mixed mode
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madhan ravi
madhan ravi 2018-11-5
So it appears that you have Text Analystics Toolbox so that best option is to contact Mathworks support team by pressing the Contact Us button on the on right corner of this page. They will guide you further.
removeStopWords does not work on strings or char vectors, only on tokenizedDocument.
The way MATLAB searches for functions means that it will only find removeStopWords if you have a tokenizedDocument in your workspace.
>> clear all
>> which removeStopWords
'removeStopWords' not found.
>> td = tokenizedDocument;
>> which removeStopWords
[..]/matlab/toolbox/textanalytics/textanalytics/tokenizedDocument.m % tokenizedDocument method

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