I was wondering if there was a way to directly write a spreadsheets in Matlab, or if someone had published a Matlab add-on that specifically introduced spreadsheets?
I recommend you to use the .csv format in order to export MATLAB data to a spreadsheet. You can write a matrix to a csv file using the the csvwrite function. The following code writes matrix M to a csv file in your workspace:
You can easily import the csv file to excel, numbers, google docs etc.