There is any way to know the dimensions of an excel file (rows, columns) without using xlsread?

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.

Answer 1

[Tom]

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)

[William Quiroz]

very useful, thanks!

[dpb]

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clear Excel        % also get rid of no longer valid Excel object hanging around in workspace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...

Answer 2

[David Sanchez]

NO, there is not a way to do what you need/want.