Wednesday, September 4, 2013

Resource: Maps / GIS


A great, actually the best, resource for Swedish maps is Lantmäteriet which you, as students, have free access to. Login through here. You can find:

Vector Maps. Format: Shape-file
Översiktskartan: Overview. Detail standard scale 1:250 000
Vägkartan: Roadmap. Detail: 1:100 000
Terrängkartan. Terrain. Detail: 1:50 000
Fastighetskartan. Property map. Detail: 1:5000 - 1:20 000
Vegetationskartan. Detail:
Ortnamn: Place names.
Laserdata: 3D-scans of the topograhy. Comes in 2x2 km squares with approx 9 million points. Requires a software that reads the LAS-format. Highly detailed.

Raster Maps: as above but rasterized. Except:
Höjddata: Height data. Data delivered in TIF-format
Ortofoto: Ortho photo / satellite imagery [example - see above]

All the vector maps are delivered in shape-files (ArcGIS) and with a choise of two projections:
epsg3006 SWEREF99TM 
epsg3021 RT90 2.5 gon V

SWEREF is the preferable.

Export
You need to define what part of Sweden you want. A tutorial here: Youtube. And a document: doc
By default and by mistake you can have two emails when you're checking out the material. Please erase one. If doesn't work, restart the browser. Yesterday they had some problems with KTH, but according to the support everything should work by now.

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