There is any way to know the dimensions of an excel file (rows, columns) without using xlsread?
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There is any way to know the dimensions of an excel file (rows, columns) without using xlsread?
I have very large .csv/.xlsx files and I want to increase a waitbar. My strategy will be make a loop with a percentage of the file to read and then increase the waitbar.... repeating it till the file is completely read.
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Accepted Answer
Tom
on 19 Jun 2013
You can, but you have to open an Actx server - I wouldn't bother unless you really think it's worth it...
Excel = actxserver('excel.application');
Excel.workbooks.Open(fileName,0,true); %file name must also have path
nCols = Excel.ActiveSheet.UsedRange.Columns.Count;
nRows = Excel.ActiveSheet.UsedRange.Rows.Count;
Excel.Quit
Excel.delete
That will probably need adding to (e.g. specifying a worksheet)
2 Comments
dpb
on 4 Aug 2024
NOTA BENE: The above code snippet leaves the Excel file open...it should also close the file before destroying the connection...
Excel = actxserver('excel.application');
Excel.workbooks.Open(fileName,0,true); %file name must also have path
nCols = Excel.ActiveSheet.UsedRange.Columns.Count;
nRows = Excel.ActiveSheet.UsedRange.Rows.Count;
Excel.ActiveWorkbook.Close(0); % close the workbook!!!!
Excel.Quit
Excel.delete
clear Excel % also get rid of no longer valid Excel object hanging around in workspace
It would be better to encapusate the functionality in a function...
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