Lab Notes 4/10/2013 (WEEK 2 LAB)

Today we are performing georeferencing with ArcMap GIS.

First of all, the GIS is totally a new software to all of us, so we basically follow the instruction given by the lecturer.


Here is the one by one step for the instructions in the lab:

1. Remove the "Read only" for the file properties
2. Get the world map from USGS as the base map for our georeferencing.
3. Add our new map to the software and zoom to the area.
4. Set the green box to 128
5. Set 7~8 control points per image as the referencing points
6. Use "turn off the layer" to find the corresponding points for any mistakes and reference.
8. Save the control points
7. Update the georeferencing.
8. create the new image"Rectify". (transformation)
(For self-installing the ArcMap GIS, installing the service pack #5 is primary requested).


Here is the list of problems we faced during the lab:

1. We could not add the image into the GIS.
2. It was hard to choose control points
3. There are some houses gone in the new map, so that we cannot even reference to a point