How to extract certain rows and columns with the readtable option for Excel files.
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Suppose we have an Excel file Data.xlsx. The file have certain descriptive text in the initial rows and then there is tabular data on several sheets. I would like to extract column 1 and column 3 but the useful row number starts from say, 30 and ends at 10000.
Table1=readtable('Data.xlsx', 'Sheet', 'Signal', 'Range', 'A:C');
Is there a better way to read such an Excel file? There is a lot of text in the initial rows of the Excel file. This is default way the instrument exports the data. How can we only read column A and column C whose useful rows start from 30 and end at 10000?
Sindar on 24 Jan 2020
Edited: Sindar on 24 Jan 2020
Using the import tool, then generating code and clearing unnecessary details, this appears to be the way:
opts = spreadsheetImportOptions("NumVariables", 3);
% Specify sheet and range
opts.Sheet = "Signal";
opts.DataRange = "A30:C10000";
% Specify column names and types
opts.VariableNames = ["A", "Var2", "C"];
opts.SelectedVariableNames = ["A", "C"];
% Import the data
Table1 = readtable("Data.xlsx", opts);