Commit 3d04c4636024c814e2fbaa92abcc8b77347829a1

Authored by Olivier Hagolle
1 parent 835a8bf4
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Update README.md

Simplification of interface
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README.md
1 1 LANDSAT-Download
2 2 ================
3 3  
4   -The routine provided below enables to automatically download LANDSAT data, using the current (April 2014) version of EarthExplorer system.
5   -
  4 +The routine provided below enables to automatically download LANDSAT data, using the current (April 2014) version of EarthExplorer system. This new version (2014-08-19) does not need to provide the exact overpass date anymore, I have reused here an idea of my colleague Michel Le Page at CESBIO (Thanks Michel !), though implemented differently.
6 5  
7 6 It works for LANDSAT 8 and LANDSAT 5&7, but needs that the data be already online. It seems to be systematically the case for LANDSAT 8, but for the older LANDSAT, it may be necessary to first order for the production of L1T products, on the earthexplorer site http://earthexplorer.usgs.gov. And of course, you will need to have an account and password on the Earthexplorer website, to store on the usgs.txt file. If you have an access through a proxy, you might try the -p option. it works through CNES proxy at least but was only tested there.
8 7  
9 8 This routine may be used in two ways :
10 9  
11   -- by providing the WRS-2 coordinates of the LANDSAT scene, for instance, (198,030) for Toulouse. And, as LANDSAT passes every 16 days, you also have to provide with the -d option, the exact value of a LANDSAT overpass. Example:
  10 +- by providing the WRS-2 coordinates of the LANDSAT scene, for instance, (198,030) for Toulouse (-s option), , the start date (-d option), and the end date (-f option). If the end date is not provided, it is replaced by today's date by default. Example:
12 11  
13   -` download_landsat_scene.py -o scene -a 2013 -d 106 -f 365 -s 181025 -u usgs.txt -p proxy.txt --output /mnt/data/LANDSAT8/N0/`
  12 +` download_landsat_scene.py -o scene -d 20130127 -s 181025 -u usgs.txt -p proxy.txt --output /mnt/data/LANDSAT8/N0/`
14 13  
15 14 - by providing a list of products to download, as in the example below:
16 15  
... ... @@ -29,3 +28,5 @@ If you do not use the --ouput option, the files will be downloaded to /tmp/Lands
29 28 To see all the options :
30 29 ` download_landsat_scene.py -h`
31 30  
  31 +The nice progress bar was provided by Jake Brinkmann ( Thanks Jake !)
  32 +
... ...