the procedure to access a spreadsheet data from MATLAB running an Excel application in an Automation server is well known and explained at the matlab Documentation. As an example, something like this is seen:
exl = actxserver('excel.application');
exlWkbk = exl.Workbooks;
exlFile = exlWkbk.Open([docroot '/techdoc/matlab_external/examples/input_resp_data.xls']);
I need to open a generic file from Excel (something you wold do otherwise at the Command Window through winopen(cd) ). I would like to have the possibility to chose the file and don't let it fix.