Get a filter for a layer

Parse a filter string into a list of filters that the map can use.

Usage

get_layer_filter(filter_str)

Arguments

filter_str

A string or vector of strings representing the filter conditions.

Value

A list where the first element is "all" if multiple filters are provided, or a single filter condition.

Examples

# Filter to only show rows where the "layer_id" column is equal to "forests"
get_layer_filter("layer_id == forests")
#> [[1]]
#> [1] "=="
#> 
#> [[2]]
#> [1] "layer_id"
#> 
#> [[3]]
#> [1] "forests"
#> 

# Filter to show rows where the "layer_id" column is equal to "sites" and the "project_status"
# column is equal to "Confirmed"
get_layer_filter(c("layer_id == sites", "project_status == Confirmed"))
#> [[1]]
#> [1] "all"
#> 
#> [[2]]
#> [[2]][[1]]
#> [1] "=="
#> 
#> [[2]][[2]]
#> [1] "layer_id"
#> 
#> [[2]][[3]]
#> [1] "sites"
#> 
#>