valid

[morganherlocker]

function for checking if a given geojson object is valid. This might be possible with jsts, or with some sort of linter module.

[derrickpelletier]

+1 for this
I currently use QGIS for this and find it quite a hassle.

[morganherlocker]

I will give this a crack tomorrow. I will probably plug into geojsonhint.

[derrickpelletier]

Ah, I may have read into it too much in my excitement. I thought you were meaning validity in terms of polys—i.e. having no intersections or duplicate points or whatnot.

[morganherlocker]

mapshaper does this, which I think is integrated into topojson (which is already a dependency of turf), so the features you are looking for may actually be pretty easy to implement. I will add another feature issue called "fix", which will identify and fix issues like you are describing here.

[morganherlocker]

Here is the new issue:

#87

[vlasvlasvlas]

this is nice.

some sort of st_makevalid would be even nicer

[blackrez]

Hello, I implemented the ST_isvalid of postgis : https://github.com/blackrez/turf-isvalid.

How I can add in turf?

[stebogit]

Is this geojson validator still of interest @morganherlocker ?
I know jsts is a goner, so we might want to implement this with geojsonhint instead.

@DenisCarriere @rowanwins is this material for booleans?

[rowanwins]

It's still interesting from my perspective @stebogit

I think this module probably requires more than geojsonhint and yep would probably fit in the booleans collection.

Off the top of my head it's probably a combination of

• geojsonhint
• @turf/kinks for id'ing self-intersections
• check for duplicate points
• plus a bunch of other checks!

Some good background reading here from the postgis world.

[DenisCarriere]

I will give this a crack tomorrow. I will probably plug into geojsonhint.

@morganherlocker That's a long tomorrow 🤣