I once found a great but simple webpage that has a drop-down with several text-based GIS formats such as GeoJSON and WKT, and a text box to copy/paste your data. The feature is then drawn on a world map. You can continue to add shapes on the same map.
Does anyone know the page, or any page where I can paste WKT and GeoJSON to see them displayed on a map?
Look at Are there any online WKT editors?
GeoJSON and WKT
GeoJSON
WKT
I created this little utility for a co-worker to plot multiple WKT or GeoJSON geometries on a Leaflet map. You can fork it and tailor it to your needs.
wkt:
https://arthur-e.github.io/Wicket/sandbox-gmaps3.html
https://clydedacruz.github.io/openstreetmap-wkt-playground/
https://geometrymapper.com
geojson:
http://geojsonlint.com/
csv:
https://www.becsv.com/csv-viewer.php
.shapefile/geojson/csv:
https://mapshaper.org/
https://www.sunearthtools.com/tools/gps-view.php
svgviewer:
https://www.w3schools.com/graphics/tryit.asp?filename=trysvg_path
svg handling:
https://github.com/substack/svg-linearize
https://github.com/davidmcclure/svg-to-wkt
https://www.w3.org/TR/SVG/paths.html
https://stackoverflow.com/questions/5736398/how-to-calculate-the-svg-path-for-an-arc-of-a-circle
geojson on leaflet:
Adding GeoJSON layer on leaflet?
converters:
CSV to GeoJSON: http://csv.togeojson.com/
CSV to GeoJSON: http://www.convertcsv.com/csv-to-geojson.htm
JSON to CSV: https://json-csv.com/
JSON to CSV: http://www.convertcsv.com/geojson-to-csv.htm
WKT to GeoJSON (printed in console): https://geometrymapper.com
examples:
wkt: https://en.wikipedia.org/wiki/Well-known_text#/media/File:SFA_Polygon.svg
csv: https://github.com/naturalatlas/geocsv-info/blob/master/example.csv
geojson: https://www.mapbox.com/mapbox-gl-js/example/geojson-polygon/
svg path: https://jsbin.com/quhujowota/1/edit?html,js,output
svg path: https://codepen.io/anon/pen/XogNoZ
WKT visualizer on 3D Earth
https://asapelkin.github.io/wkt_3d_viewer
(repo with examples and readme https://github.com/asapelkin/wkt_3d_viewer)
GeoJSON Viewer (from URL) gives a simple, quick map from a GeoJSON URL.
In case anyone comes across this question and needs to convert to/from Esri (ArcGIS) json, geoJson, or WKT, I created a small application called geometry-inspector. It is much like the listed applications in the accepted answer, but with the improvement that it supports Esri's json format.
Hope it helps someone!
Created a WKT <-> GeoJSON converter based on Wicket http://jhnotes.com/wkt/
mapshaper worked well for huge GeoJson file but unfortunately it plots on white background instead of map.
For bash, I use my own script: https://gist.github.com/rajanski/4d2595c1fd4e35c19b4e1a02b4ed579f Pro: Geojson data doesnt leave local machine, good for confidential stuff.
Github/Gists can handle GeoJSON: https://help.github.com/en/articles/mapping-geojson-files-on-github
For WKT there's also https://wktmap.com/ which supports different projections.
Kepler.gl https://kepler.gl/demo
I can recommend the Kepler.gl demo where you can add your data in the following formats:
CSV, Json, GeoJSON or saved map Json.
As data privacy is a concern when using online viewers, they state:
*kepler.gl is a client-side application with no server backend. Data lives only on your machine/browser. No information or map data is sent to any server.
Screenshot:
WKT <-> GeoJSON converter and Map Viewer:
WKT & GeoJSON Map Viewer
geometrymapper is what you're looking for. This Online Mapping Tool is capable of plotting WKT and GeoJson in different coordinate systems and colors. Really recommend it. (mirror https://vannieuwenhovej.github.io/wkt-geometry-plotter)
