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

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,

Answer 1

[Walter Roberson]

https://www.mathworks.com/help/textanalytics/ref/tokenizeddocument.removestopwords.html

Introduced in R2018b

Answer 2

[madhan ravi]

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

[Saugata Bose]

@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]

Type

ver

in command window and paste what shows there

[madhan ravi]

Also try my edited answer

[madhan ravi]

Please before putting up a comment try my edited answer and then comment!

[Saugata Bose]

Sorry dear. The main problem here is, the program is not finding the removeStopWords function..... :(

[madhan ravi]

Ok what showed up when you typed ver? Also try

which removeStopWords

in command window and paste your result here

[Saugata Bose]

this is interesting. it displays "'removeStopWords' not found." do you have any suggestions in this case.

[madhan ravi]

Then I suspect you haven’t installed Text Analytics toolbox , ok what showed up when you typed

ver

in command window?

[Saugata Bose]

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
-----------------------------------------------------------------------------------------------------
MATLAB                                                Version 9.3         (R2017b)
Simulink                                              Version 9.0         (R2017b)
Aerospace Blockset                                    Version 3.20        (R2017b)
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[madhan ravi]

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.

[Christopher Creutzig]

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