Corpus Christi Field Trip

Corpus Christi Field Trip Ground Truth and GPS Use

Go to the T drive and create a folder called FieldTrip

Open ENVI and load your data stack. 1) Make a 3,2,1 color composite and load into display window 2) In display window under File > Save As Image File as a geotiff naming it CC_321 in your T drive FieldTrip Folder 3) Note: This image will be in UTM Zone 14N WGS84

The field trip purpose was to better understand the

Step 1 – Open ArcMap – A New Map

1. Add LandSat data from your FieldTrip project folder called CC_321 2. Add your Land Cover shapefile you created on Friday for Corpus Christi 3. Add Shapefiles from T under FieldTrip Folder: Waterways, CC_Streets, Streams, CC_TX, Prj_Bndry

Step 2 – pick better colors for your Streets, Streams, CC_TX and make the Prj_Bndry Blue

Save you project with your Name and Field Trip

Step 3 – Bring in your GPS data:

1) Connect your GPS cable to the computer port and GPS Unit. 2) Turn on your GPS Unit 3) Ues the Garmin Toolbar (or Open it via its Icon or Start Programs). 4) Click on Waypoints and Download 5) Scroll down your Waypoints and use the “X” Delete for any waypoints that may have come on your unit or that you do not want to include in this project 6) Click OK if asked when finished downloading 7) Use File > Set Projection > ESRI and set it to NAD_83_Zone_14 the OK 8) Use File > Save To > ArcMap > Shapefile Layer and name GPS_YourName 9) If Necessary add to your Project

Step 4 – Investigate your data – Turn off and on layers and zoom in and out 1) Does your GPS Location notes match your classifications? 2) Use your Measure Tool and look at your Pixels – remember to set units to meters. How well does the GPS pixel match a 30 or 60 m pixel? Are you off in North/South, East?West? 3) If time permits – add some digital photos and Hyperlink to locations.