[OSM-talk] Landsat and waypoints in JOSM

[Nick Whitelegg]

I have managed to get Landsat to display in JOSM. Following a discussion over 
the New Forest weekend, the approach I have taken is to allow the user to 
download Landsat for the currently-displayed area, rather than a continuous 
grab from the WMS server. Hence I have implemented a new layer, LandsatLayer.

Scaling seems to work well. You can grab Landsat at any scale, then zoom in or 
out; the degradation of quality on zooming in is comparable to fetching 
Landsat at a zoomed-in scale; no worse. In other words, you can grab Landsat 
at any scale and then work with it at other scales. As an example of its use, 
the quality is good enough to estimate the boundaries of woods and heaths in 
the New Forest.

I haven't implemented much of a UI for this yet. So... how would people like 
to use this facility? Shall I use a dialog similar to the one for grabbing 
OSM data from the OSM server?

BTW another JOSM patch I added allows you to load waypoints directly into the 
OSM data layer. This is something I find useful as often, when out walking, I 
record a car park or pub, or other POI, plus its name, as a waypoint and it 
would be good to convert it straight to a node. At the moment it does this 
for *any* waypoint with a *non-default* name (i.e. one not beginning with a 
zero). However I could change it to only convert waypoints beginning with - 
say - "Z"

Screenshots of the landsat at:

http://www.free-map.org.uk/images/josm-landsat.png

- GPX track following the perimeter of a disused airfield in the New Forest 
overlaid on Landsat

http://www.free-map.org.uk/images/josm-landsat2.png

- same, with no GPX track

Nick