This might be a very simple thing, but I just can't figure it out how to do it in QGIS.
I have a fisheries dataset with multiple catches in one location. I'd like to display these catches as a dot varying in size according to the number of catches - like dots displaying population size in a city. However, the excel sheet I have is one catch each row, with the same coordinates but different attributes (length, weight, etc).
Is there a tool in QGIS that can merge all points in one location (other attributes not needed then)?