In QGIS, I have a 500 sqft grid overlaid onto my map. I want to perform summary statistics (sum, mean, median, max/min) on certain vector features under the grid and assign the grid cell that value. I did this before (purple grid image below), but I can NOT remember what I did.
Here's my map with the grid overlaid. Let's say I want to calculate the total linear feet of streets in each cell. Or even the number of intersections.
Here's the example I completed a few weeks ago. BUT I CAN'T REMEMBER HOW.