Re: [OSM-talk] JOSM display is squashed

2009-09-15 Thread Jack Stringer 
Use Potlach ;-)

Jack

On Sep 15, 2009 7:22 PM, d f fac63te...@yahoo.com wrote:

Hi

I've downloaded some data to JOSM but the data is squashed in appearance in
the north-south direction. It causes inaccuracies when I map.
For instance i drew a rectangle at about 45 degrees, but when it showed in
mapnik it looked like a parallelogram.

I've downloaded the latest Java  JOSM.

Any ideas for a solution?

Cheers
Dave F.


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Re: [OSM-talk] JOSM display is squashed

2009-09-15 Thread Blaž Lorger 
Use Mercator projection. But be careful. I think you have to use WGS84 for 
tracing over aerial imagery.

  Blaž

On Tuesday 15 September 2009 20:18:57 d f wrote:
 Hi
 
 I've downloaded some data to JOSM but the data is squashed in appearance in
  the north-south direction. It causes inaccuracies when I map. For instance
  i drew a rectangle at about 45 degrees, but when it showed in mapnik it
  looked like a parallelogram.
 
 I've downloaded the latest Java  JOSM.
 
 Any ideas for a solution?
 
 Cheers
 Dave F.
 

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Re: [OSM-talk] JOSM display is squashed

2009-09-15 Thread Robert Scott 
On Tuesday 15 September 2009, Blaž Lorger wrote:
 Use Mercator projection. But be careful. I think you have to use WGS84 for 
 tracing over aerial imagery.

WGS84 is a datum* not a projection. A datum maps points around the earth to 
lat/lon. A projection maps lat/lon points to the screen/paper etc.

WMS backgrounds work fine on Mercator in JOSM.


robert.

* and a few other things.

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Re: [OSM-talk] JOSM display is squashed

2009-09-15 Thread Iván Sánchez Ortega 
El Martes, 15 de Septiembre de 2009, Robert Scott escribió:
 On Tuesday 15 September 2009, Blaž Lorger wrote:
  Use Mercator projection. But be careful. I think you have to use WGS84
  for tracing over aerial imagery.

 WGS84 is a datum* not a projection. A datum maps points around the earth to
 lat/lon. A projection maps lat/lon points to the screen/paper etc.

I'm sure Blaž meant WGS84 lat/lon AKA epsg:4326 ;-)

Anyway, to check the projection JOSM is using: go to Edit-Preferences, and 
once there, go to the projection tab (it looks like a pink grid over a 
globe). Then check that mercator is selected as the projection method.


Cheers,
-- 
--
Iván Sánchez Ortega i...@sanchezortega.es

Un ordenador no es un televisor ni un microondas, es una herramienta compleja.


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