Revision as of 21:42, 1 February 2012 edit Yug (talk \| contribs) Extended confirmed users, Pending changes reviewers 18,779 edits →Step 2: Download the GIS data ← Previous edit		Revision as of 10:49, 2 February 2012 edit undo 143.210.224.114 (talk) →Step 2: Download the GIS data: minor gramamtical edits Next edit →
Line 131: {{See also\|Wikipedia:Graphic_Lab/Resources/Gis_sources_and_palettes{{!}}/GIS sources & palettes (English)\|\|:fr:Aide:Cartographie/Ressources cartographiques géoréférencées#Sources des données{{!}}French\|:de:Hilfe:GMT#Topographische_Datens.C3.A4tze{{!}}German}} :{{done}}— section updated (2012/02) There isare 2 ~~kind~~kinds of data : raster GIS files ~~—surfaces~~— surfaces with limited precision represented by dots (pixels) — most of time topographic data ; and vector GIS files ~~—dots~~— dots, lines and ~~polygons—~~polygons. Below are both the biggest families, and some links to download the files needed for this tutorial. ===Topography/bathymetry=== [[file:QGis_ETOPO1_vs_SRTM3_-_quality_match.jpeg\|thumb\|600px\|Quality comparison between ETOPO1 (pixelated) and SRTM3 (smoother) data sets. This difference doesn't matter for making large maps with coverage greater than 1000km (~620mi) across.]]

Wikipedia:Graphics Lab/Resources/QGIS/Get ready: Difference between revisions