@Adri van der Meer Thanks ! works fine just with a small addition, checking when readline returns 0 as parse(0) throws error. But why ImportMatrix fails ?

@Adri van der Meer Hi, Thanks for the help ! but apriori I do not know how many expressions the file may contain, so ImportMatrix seemed to be a generic way to handle it. Any other option without assuming on the number of expressions ?

This will help me.

This will help me.