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tabulate() is not working properly

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Binzi Shu
Binzi Shu on 2 Mar 2016
Answered: Kafayat Olayinka on 29 Feb 2020 at 17:51
I have a table and I try to tabulate a column of the table, say the name of the column is "price". This column has values of 0,30,60 and 90. And I want to see the frequency counts. But when I say "tabulate(table.price)" it will return an error "Undefined function 'tabulate' for input arguments of type 'single'". This also happens for other data types, for example "Undefined function 'tabulate' for input arguments of type 'int8'", Undefined function 'tabulate' for input arguments of type 'categorical'", etc.. What is the type that tabulate() can work on and how can I solve this problem? Thanks.

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Answers (2)

Kevin Claytor
Kevin Claytor on 2 Mar 2016
It sounds like you don't have the tabulate function. This is included with the stats + machine learining toolbox. Can you paste the output of the "ver" command into a reply?
If you just want the histogram counts, consider:
[counts, centers] = hist(table.variablename)

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Binzi Shu
Binzi Shu on 2 Mar 2016
Yes I have it. I did try "ver" and I saw the name of this stats+machine toolbox....
Kevin Claytor
Kevin Claytor on 3 Mar 2016
In that case, you may be over-riding it with another function or variable. Can you stop your code right before the error (eg; with a breakpoint) and copy the output from:
>> which tabulate
and
>> whos tabulate

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Kafayat Olayinka
Kafayat Olayinka on 29 Feb 2020 at 17:51
price=[0,30,30,60,60,90];
tab=tabulate(price);
output for tab:
price count %
0 1.0000 16.6667
30.0000 2.0000 33.3333
60.0000 2.0000 33.3333
90.0000 1.0000 16.6667
plot(tab(:,1),tab(:,2));

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