Module 3 - Intro to Electromagnetic Radiation (EMR), Satellite Sensors and Digital Image Processing.


This week, I worked with a classified land cover image in ERDAS IMAGINE to explore how land cover types can be analyzed and mapped. I began by opening the file and examining its attribute table. To better understand the extent of each land cover type, I added a new Area field to the table, which allowed me to calculate the area each classification occupies in the image. After saving the updated layer, I used the Inquire Box tool to select a smaller region of interest within the image. I then exported this selected area as a new image.

Once the new image was created, I added a new Area field again to ensure the area values reflected only the smaller region. I then moved to ArcGIS Pro to begin the map-making process. I added tm_subset.img to a new map, adjusted the symbology, and edited the class labels so that each land cover class displayed both its name and the amount of area it occupies. After setting up a layout with a title, legend, north arrow, scale bar, and my name, I exported the final map.

This exercise helped me understand how to move data between ERDAS IMAGINE and ArcGIS Pro, how to calculate area from classification data, and how to clearly communicate land cover information through map design.


 

Comments

Post a Comment

Popular posts from this blog

Module 1- Overview of ArcGIS

Image
This week was a good intro to the program and a good start to getting used to how the system works. It will just take more practice to get used to where things are and what they do.  
Read more

Module 5: Data Points and Geocoding

  Manatee County Schools - Overview      Here is the Link to my map for this week.      The map this week is the locations of all the schools located in Manatee County, Florida. It contains information such as the coordinates, addresses, and names of the schools. Schools of all grade type are on the map. I.E elementary through college.         This weeks experience was different because we got to use Excel and partially collecting our own data from different sites. This week felt a little easier, because I have experience with Excel and I enjoy getting to use it for new things. It was nice having the labs feel a little shorter, but still learning just as much. It was easier to manage, and understand, without the potential to feel overwhelming, which I enjoyed. I didn't run into any issues in these labs, everything ran smooth.
Read more

Module 6: Georeferencing, Editing, & 3D.

Image
  This map is a georeference of three different raster images of the UWF Campus in Pensacola, Florida. The map also includes the location of a Bald Eagle nest that was found by the FWC, and the subsequent easement that was created around the nest to protect it from harm. This week's experience was pretty fun! I really enjoyed georeferencing. Matching the older pictures of the campus with the modern day map was a cool experience. Setting up control points on the map was pretty straight forward, and I felt pretty confident following the steps and indicators. I found editing the map features interesting because it was a way to add more information to show certain characteristics that need to be highlighted. Working on the 3D map was fun because it showed me a more realistic view of what the area actually looks like, which I enjoy more than the generalized maps that we have looked at previously. The following map is a georeferenced of the UWF Campus as well, on 3D scene:
Read more