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[WIP] [docs] Make what you can do with zonal very clear #809

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[WIP] [docs] Make what you can do with zonal very clear #809

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10 changes: 9 additions & 1 deletion src/methods/zonal.jl
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Expand Up @@ -4,9 +4,17 @@
Calculate zonal statistics for the the zone of a `Raster` or `RasterStack`
covered by the `of` object/s.

Since `f` is the first argument, you can use Julia's `do`-block syntax with `zonal`,
like so:
```julia
zonal(raster; of = geom) do r # r is an iterator if skipmissing=true, or a raster if skipmissing=false
return r # or do some operation
end
```

# Arguments

- `f`: any function that reduces an iterable to a single value, such as `sum` or `Statistics.mean`
- `f`: any function that reduces an iterable to a single value, such as `sum` or `Statistics.mean` - but it can even be `identity`.
- `x`: A `Raster` or `RasterStack`
- `of`: A `DimTuple`, `Extent`, $OBJ_ARGUMENT

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