GIS4035 Module 5a-- Intro to Electromagnetic Radiation

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I really enjoyed this week's lecture and lab since we got the opportunity to delve deeper into how Electromagnetic Radiation (EMR) works, a topic we merely brushed on back in High School Physics.

For the lab, first we had to calculate EMR properties by reviewing Maxwel's Wave Theory and Planck's Relation formulas and working through sample problems.

Using ERDAS Imagine, we were tasked with modifying large scale satellite images (AVHRR and Landsat TM) as part of learning how to use basic tools, set image settings, and navigate throughout the Viewer.




One of the tools learned during this lab were the Inquire tools. I used the Inquire Box in order to place and box over a classified image of forest lands in Washington State in order to create a subset image. I also added a new column for Area in its attribute table. So once the image was processed, a new .img file was created and it consisted of land cover names (Water, Cloud, Bare Ground, etc.) and their area in units (hectares). Below is the final result.



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