Hinzufügen von GeoJSON zu Leaflet

Question

Hier ist eine Demo von 2 Möglichkeiten, GeoJSON zu einer Leaflet-Webkarte hinzuzufügen: http://codepen.io/pmckinney/pen/mELyNY

Ich weiß, dass es auch das Leaflet-AJAX plugin gibt.

Und wenn Sie daran interessiert sind, eine Shapefile oder Feature Class in GeoJSON zu konvertieren, schauen Sie sich das City of Philadelphia's ArcToolbox an.

Weiß jemand, warum die Ausgabe des ArcGIS Desktop JSON-Konvertierungstools in Leaflet nicht funktioniert? Ich habe mich schon immer gefragt, was da los ist.

JohnGravois · Answer

I reproed the error you're reporting in ArcGIS Pro 2.2.2 and forwarded on the report to the appropriate team. Sorry for the inconvenience.

* Create a wkid:3857 feature class and add a few points to it.
* Open the ‘Features to JSON’ tool. Check the ‘Output to GeoJSON’ and ‘Project to WGS_1984’.
* Inspect the output file in a text editor. The CRS is labeled as “EPSG:4326” but the coordinates are still northings and eastings.

pmckinney · Answer

Paul Brown‌, while I can't speak to what's going on with ArcGIS Pro, you could check out the Arc Open Tool to convert shapefiles/feature classes to GeoJSON using ArcGIS Desktop (ArcMap/Catalog).  Maybe you can use this tool while you await resolution with the ArcGIS Pro stuff?

PaulBrown · Answer

That is how Pro created the GEO JSON.  Even though it says it is supposed to be WGS84, it is Web Mercator.  Ended up projecting the feature class to WGS84 and then telling it to use the original SR.  I think this might be a bug or something in Pro.