I have a grid with population points inside each of the individual cells. I've used the "join attributes by location" tool to join each population point to their respective cell. Now I'd like to sum up all my population points inside each grid cell. I've used the field calculator using the following expression:
sum("id")
"id" being the id of each cell in the grid. But now, I have a sum of population for each row.
I'd just like to have one line with the cell id and the total population inside.