1. Check login and access to Geomatica software (Linux and Osmotar) – we prefer to use the Linux version to avoid Windows and Osmotar bottlenecks and oddities
2. Start Geomatica software, and in the ‘Focus’ window
File-> Open the PG 2017 image scene (.tif file) in /home/labs/geog432/data2017
a. Zoom and Pan – check out the campus and your house areas; zoom enough to see the pixels – note the image is compressed, so they are not as clear as when we will use the full resolution
b. Note the UTM coordinates (displayed at the bottom) as you move – scenes are downloaded in the local UTM zone; see Lat/long as well for a point by clicking the +x,y button
c. Measure the approximate E-W and N-S extents .. use measuring tool, or basic math from the UTM coordinates; how big is it across in kilometres ?
d. Enhance – try none, linear and root – see which gives best contrast (enhancements is on the 2nd row of symbols, to the left left of the sun); you can also adjust contrast and brightness
e. You can also find may tools using right-click on filename e.g. enhancements
3. Download a LandsatLook image (as shown in class)
- Go to https://remotepixel.ca
- Select the satellite search option
- Pick an area you like – anywhere in the world, be adventurous …
- When you find the area, select the scene box and click on it
- Then click on the text below ‘latest – with date’
- Select the best / latest image – little to no cloud cover, and click on the USGS icon below
- In the USGS registration box, sign in as: geog432 Password: class2017
- In the next window, click on the wee green download arrow, and click on the Download button for ‘LandsatLook Images with Geographic Reference’ (~10mb) … NOT the ‘Level-1 GeoTIFF Data Product’ or you will be here a while and get the evil eye from Roger/Scott.
- Create a geog432 (or 632) folder under /home/yourname and Download it to your geog432 folder … Do not stuff everything into desktop or Mydocuments like a Windows ‘don’t know any better dufus’, or your desktop will start to look like Roger’s office.
- It downloads as a .zip, so unzip – you only need the first .tif file
- File-> New project in Geomatica (no need to save the old one) and repeat steps 2a-e with this image