Table variable subscripts must be real positive integers

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Eduardo Orellana 2021-7-29

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https://ww2.mathworks.cn/matlabcentral/answers/888737-table-variable-subscripts-must-be-real-positive-integers

评论： Eduardo Orellana 2021-7-30

Using the data from https://la.mathworks.com/help/finance/black-litterman-portfolio-optimization.html, and running the code head(T(:,["Dates" benchmarkName assetNames])), get the following error: Table variable subscripts must be real positive integers, logicals, character vectors, or cell arrays of character vectors. I dont now how to fix it.

thanks

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Dave B 2021-7-29

编辑：Dave B 2021-7-29

在 MATLAB Online 中打开

That helps, this sort of fits with my previous hypothesis i.e. that you need to provide char not string:

Let's work our way back to the final bit building off of:

head(T(:,'Dates'))

head(T(:,'DJI')) % just a different table variable
head(T(:,{'Dates' 'DJI'}) % Two table variables
% specifying 'DJI' in a workspace variable
benchmarkName = 'DJI'; 
head(T(:,{'Dates' benchmarkName}))
% specifying all of the assetNames
assetNames = {'AA' 'AIG' 'WMT' 'MSFT' 'BA' 'GE' 'IBM'};
head(T(:,assetNames))
% one way to put these all together
head(T(:,{'Dates' benchmarkName assetNames{:}})) 
% the line of code from my previous comment 
% (just in case something got confused and this works now)
head(T(:,['Dates' benchmarkName assetNames]))