Labeling the columns in an array
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If we import a .csv or Excel file using readtable, and then convert the table to an array as the following:
Data=table2array(readtable('Filename.csv'));
We get an output like the following. This syntax process removed all the original labels of each column. Is it possible to label the columns, such as Serial number, Time, Signal 1, Signal 2?
Although one can read and separately isolate the columns, does Matlab allow retaining the labels? Thanks
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John Doe
2019-7-12
Unless you are doing an operation that does not support table data sets, leave your data as a table.
Alternatively, save all your variables to cell array using:
varNames = t.Properties.VariableNames;
Then when you want to output your data can recreate the table afterwards.
Don't split your data in to individual variables.
采纳的回答
Peter Jarosi
2019-7-12
编辑：Peter Jarosi
2019-7-12
Do not convert your table into an array! Just use table object!
Data=readtable('Filename.csv');
Later, if you want to refer it as a matrix you can use the following syntax:
Data{:,:}
If you want to refer your columns as column vectors use:
Data{:,{'Serial number'}}
Data{:,{'Time'}}
etc.
If you want your signals in a n by two matrix:
Data{:,{'Signal 1','Signal 2'}}
2 个评论
FW
2019-7-12
Peter Jarosi
2019-7-12
You're welcome!
You can still use your data in a table format, just change your 3rd line to:
Signal1=Data{1:382, {'Signal 1'}}; % data in column in 3
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