Seeking online WKT editor?

Question

We need to do are very simple administrative boundary drawings over a (insert fav map here) via some website.

Our requirements are:

1. click to create points which then form a polygon
2. drag existing points to edit a polygon

I know Google Maps and others can do all of this but we are hoping to leverage an existing site that can already offer this.

We would also love to 'load' some WKT data, so we can edit that (if required), where load means paste into a textbox.

Anyone know of any sites out there with this functionality?

Answer 1

Take a look at Wicket, it's awesome:

http://arthur-e.github.io/Wicket/sandbox-gmaps3.html

The demo sandbox might be enough for you, if not you could probably use it to develop a simple Javascript app.

Answer 2

You can do this with OpenLayers.

Please have a look at the Vector Format's sample. Just select 'Well Known Text' from the drop down, and draw your shape. You will get your shape in WKT format.

For the Editing/Modifying functionality, have a look at the Modify Feature Example. This shows how you can modify an existing geometry.

You could copy the code to from both these examples to your own server and Integrate and edit it if required.

Answer 3

Just to provide an updated answer for anyone new coming to this question:

• https://wktmap.com/ is a simple online editor for WKT geometries. Allows you to paste in WKT or draw shapes and generate WKT from them. It to use different coordinate reference systems, export the geometry to WKB, etc.
• https://wkbrew.tszheichoi.com/ is a converter and editor for WKT, and allows you to export to a wider variety of formats, including GeoJSON.