OpenStreetMap 開放街圖
I am trying to export data relating to 6 OS ‘squares’ around (loose term) SK 57008 59995, 53.134102, -1.14935 in order to create an svg map. Then to work on it in Inkscape. I want the squares to be exact! That’s the issue I am grappling with in this instance.
Comments will be appreciated.
NW
PS I’m thinking that I may be framing this issue wrongly. Maybe I should ‘merely’ select an area a little larger than I need to allow a margin for error. I can then edit the selected area in Inkscape to the desired size and scale. Hmmm…
cf http://www.flickr.com/photos/archiblog/8300029894/in/photostream/
討論
由 SK53 於 2013年01月20日 21時26分 發表的評論
You have an issues with projections: you can’t just grab OSM data and hope it to look like OSGB data.
I’d do this with Quantum GIS, set up a project using the OSGB projection (EPSG: 27700) with conversion on the fly checked. You can load some OS OpenData into this (for instance the 250k raster or the Meridian 2 vector data are both very suitable).
Then download your required OSM data (this should now be re-projected automatically into OSGB). Do whatever styling is required.
Now create a composer which enables you to set the bounds of the area (I presume you mean 6 1km squares) & export this as SVG.
You could also download your OSM data as Shapefiles and use ogr2ogr to do the conversion, but this is what QGIS is doing and it hides some of the gory detail.
The SVG files can be huge: I’ve not bothered with them myself, preferring PDFs.
由 Vclaw 於 2013年01月21日 16時13分 發表的評論
Or you could set up Mapnik to work in the OSGB projection. There’s instructions here, but it look a bit complicated: osm.wiki/Mapnik_GB_Projection
Then you could use Mapnik to generate SVG images.
由 Archiblog 於 2013年01月25日 14時41分 發表的評論
@SK53 and Vclaw -
Thank you very much for your comments which I am following up. I’ll comment again later.
由 Archiblog 於 2013年01月31日 10時02分 發表的評論
This exported bitmap show what I have achieved so far: http://www.flickr.com/photos/archiblog/8431395133/in/photostream/