mutate(`Relevé area (m²)`=ifelse( (Dataset=="Patagonia" & is.na(`Relevé area (m²)`)),
-900, `Relevé area (m²)`))
```
There are 518 plots from the dataset Germany_gvrd (EU-DE-014) having a location uncertainty equal to 2,147,483 km (!). These plots have a location reported. Replace with a more likely estimate (20 km)
Fill out the columns `Forest:Sparse.vegetation` with NAs, where necessary. Create columns `is.forest` and `is.non.forest` using script developed for sPlot 2.1