WhooTS a small wms to tile proxy – WMS in Potlatch

WhooTS is a small and simple wms to tiles proxy / redirect system.

Essentially it enables the use of WMS in applications that only accept Tiles (google / Openstreetmap scheme) – WMS is now in Potlatch!

How to use it?

http://whoots.mapwarper.net/tms/z/x/y/{layer}/http://path.to.wms.server

Example:

a mapwarper map:

http://whoots.mapwarper.net/tms/!/!/!/2013/http://warper.geothings.
net/maps/wms/2013

viewing it in Potlatch, the OpenStreetMap editor:

http://www.openstreetmap.org/edit?lat=40.73658&lon=-73.87108&zoom=17
&tileurl=http://whoots.mapwarper.net:80/tms/!/!/!/870/http://maps.nypl.org/warper/layers/wms/870

Using a mapserver WMS request, with one layer:

http://hypercube.telascience.org/cgi-bin/mapserv?map=/home/ortelius/
haiti/haiti.map&request=getMap&service=wms&version=1.1.1&format=image/jpeg
&srs=epsg:4326&exceptions=application/vnd.ogc.se_inimage&layers=HAITI&

Goes to:

http://whoots.mapwarper.net/tms/!/!/!/HAITI/http://hypercube.telascience.org/cgi-bin/
mapserv?map=/home/ortelius/haiti/haiti.map

Caveats:

Its’s quite simple, does not do any caching, it just redirects a tile url to an equivalent WMS request. It would only work with WMS servers that accept EPSG:900913 projections, and at the moment, it outputs OSM / Google Tile scheme, not a proper TMS tile scheme.

It’s written in Ruby with the Sinatra micro web application framework. The code is available on GitHub too. http://github.com/timwaters/whoots