Tools for Validating 'GeoJSON'

Tools for linting 'GeoJSON'. Includes tools for interacting with the online tool < http://geojsonlint.com>, the 'Javascript' library 'geojsonhint' (< https://www.npmjs.com/package/geojsonhint>), and validating against a 'GeoJSON' schema via the 'Javascript' library (< https://www.npmjs.com/package/is-my-json-valid>). Some tools work locally while others require an internet connection.

GeoJSON linters available in geojsonlint

• GeoJSON lint web service - via geojson_lint()
• GeoJSON hint JS library - via geojson_hint() - currently using geojsonhint v1.2.1
• is-my-json-valid JS library - via geojson_validate()

All three functions return the same outputs. If the GeoJSON is valid, they return TRUE. If the GeoJSON is invalid, they return FALSE, plus reason(s) that the GeoJSON is invalid in an attribute named errors as a data.frame. The fields in the data.frame's are not the same across functions unfortunately, but they can be easily coerced to combine via e.g., plyr::rbind.fill or dplyr::bind_rows or data.table::rbindlist(fill = TRUE)

The parameters for the three functions are similar, though geojson_validate() has an extra parameter greedy that's not available in the others, and geojson_hint() has ... parameter to pass on curl options as it works with a web service.

install.packages("devtools")
devtools::install_github("ropenscilabs/geojsonlint")

library("geojsonlint")

Good GeoJSON

geojsonlint.com web service

geojson_lint(x = '{"type": "Point", "coordinates": [-100, 80]}')
#> [1] TRUE

geojsonhint JS library

geojson_hint(x = '{"type": "Point", "coordinates": [-100, 80]}')
#> [1] TRUE

is-my-json-valid JS library

geojson_validate(x = '{"type": "Point", "coordinates": [-100, 80]}')
#> [1] TRUE

Bad GeoJSON

geojsonlint.com web service

geojson_lint('{"type": "FooBar"}')
#> [1] FALSE

geojsonhint JS library

geojson_hint('{"type": "FooBar"}')
#> [1] FALSE

is-my-json-valid JS library

geojson_validate('{ "type": "FeatureCollection" }')
#> [1] FALSE

Bad GeoJSON - with reason for failure

geojsonlint.com web service

geojson_lint('{"type": "FooBar"}', verbose = TRUE)
#> [1] FALSE
#> attr(,"errors")
#>                                 message status
#> 1 "FooBar" is not a valid GeoJSON type.  error

geojsonhint JS library

geojson_hint('{"type": "FooBar"}', verbose = TRUE)
#> [1] FALSE
#> attr(,"errors")
#>   line                    message
#> 1    1 The type FooBar is unknown

is-my-json-valid JS library

geojson_validate('{ "type": "FeatureCollection" }', verbose = TRUE)
#> [1] FALSE
#> attr(,"errors")
#>   field                             message
#> 1  data no (or more than one) schemas match

Bad GeoJSON - stop on validation failure

geojsonlint.com web service

geojson_lint('{"type": "FooBar"}', error = TRUE)
#> Error: invalid GeoJSON 
#>    - "FooBar" is not a valid GeoJSON type.

geojsonhint JS library

geojson_hint('{"type": "FooBar"}', error = TRUE)
#> Error: Line 1
#>    - The type FooBar is unknown

is-my-json-valid JS library

geojson_validate('{ "type": "FeatureCollection" }', error = TRUE)
#> Error: 1 error validating json:
#> 	- data: no (or more than one) schemas match

Meta

• Please report any issues or bugs.
• License: MIT
• Get citation information for geojsonlint in R doing citation(package = 'geojsonlint')
• Please note that this project is released with a Contributor Code of Conduct. By participating in this project you agree to abide by its terms.