From IOSN-InWent FOSS GIS & Sahana Training

Map Sources

We can get GIS data/map from many source, for examples:

• SRTM files
  The Shuttle Radar Topography Mission (SRTM) is an international research effort that obtained digital elevation models on a near-global scale from 56 °S to 60 °N, to generate the most complete high-resolution digital topographic database of Earth to date. SRTM consisted of a specially modified radar system that flew onboard the Space Shuttle Endeavour during the 11-day STS-99 mission in February of 2000.
  Download the maps at ftp://e0srp01u.ecs.nasa.gov/srtm/
• Landsat
  The Landsat program is the longest running enterprise for acquisition of imagery of Earth from space. The first Landsat satellite was launched in 1972; the most recent, Landsat 7, was launched on April 15, 1999. The instruments on the Landsat satellites have acquired millions of images. The images, archived in the United States and at Landsat receiving stations around the world, are a unique resource for global change research and applications in agriculture, cartography, geology, forestry, regional planning, surveillance, education and national security.
  Download the maps at http://glcf.umiacs.umd.edu
• GoogleEarth
  In GoogleEarth we can save the map via File > Save Image , it can be roughly used as base raster map or we can rectify it first for better use by adding some GCP (Ground Control Points, GoogleEarth can do this).
• Map resources from land mapping or geographical institution or organization.
  In Indonesia there's a govermental mapping institution called Bakosurtanal (http://www.bakosurtanal.go.id/pssdad)

Training Maps

In this training we'll use some resources that will be placed in "/home/username/maps", it's structure:

• /maps
  • /raster
    • /google_images
    • /srtm
    • /landsat
  • /vector
    • /batas-admin
    • /jalan-mentawai
    • /jenis-tanah-mentawai
    • /sungai-mentawai

Download

You also can download at:

• Zipped Maps

On to Step 1: Installing GIS applications