Display row from Excel file in Matlab
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Hello there, I am trying to generate a random number (n) to then look for the data in the row n in a Excel file.
When I used
X = readtable('file.xlsx')
instead of
X = importdata('file.xlsx')
the program worked fine, but I want to know how to make it work with the function importdata as well.
It gives me this error Index in position 1 exceeds array bounds (must not exceed 1).
This is the code I used:
X = importdata('file.xlsx')
n = input('Number of participants: ');
r = randi(n)
disp('The winner is: '+string(r))
disp('The winner data is: ')
disp(X(r,:))
2 Commenti
Cris LaPierre
il 18 Lug 2020
Without knowing more about your file, we can't offer much help. The error message would suggest X only contains a single row. Check that X exists in your Workspace, and is the expected size.
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Cris LaPierre
il 19 Lug 2020
Modificato: Cris LaPierre
il 19 Lug 2020
The error message you are seeing is because importdata returns the results in a stucture. Numeric data would be in X.data, text data in X.textdata. Also from the documentation:
- For ASCII files and spreadsheets, importdata expects to find numeric data in a rectangular form (that is, like a matrix).
Tables allow you to mix data types in the same row. Here, you will need to build the disp command by combining the two separate structure fields. Perhaps something like this:
disp([X.data(r) X.textdata(r)])
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