Predict on a grid

[Aariq]

• [x] Create spatial grid of points in SEUS
• [x] Download weather data for those points and calculate predictor vars
• [x] Predict at those sites for each ecosystem x genotype
• [x] Plot maps of predicted summer NPP at 10 yrs faceted by ecosystem and genotype

[Aariq]

https://stackoverflow.com/questions/65687204/quickly-filter-down-a-grid-of-sf-points-according-to-a-polygon