How to i refer to columns and rows from my imported data?

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mabdorab 2017-3-23

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https://ww2.mathworks.cn/matlabcentral/answers/331559-how-to-i-refer-to-columns-and-rows-from-my-imported-data

回答： KSSV 2017-3-27

I imported data from Exel into matlab. I didn't import the headings of each row however I noticed it automatically named the columns by their header in the workspace section. I have a 25 by 400 data set with a range of numerical and categorical information. The file is save as mortgagedata.xls. How do I refer to this in my script?

I tried: x=mortgagedata(:,[1:25]);

but it is saying it is says: Undefined function or variable 'mortgagedata'.

How do I get it to refer to them?

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Joshua 2017-3-27

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Generally when you import data into Matlab the data will show up in the workspace on the side of the Matlab window. See what it named the vectors or matrices that it imported and use those names. Alternatively, try something like this and refer to matrix A:

A=importdata('mortgagedata.xlsx');

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