GIS Blog - Bonnie C. Morris

In exercise 4, I picked an area of the map that I found particularly interesting, which is an island in the river. I picked my favorite band combination/setting and then explained in the map notes why I made these decisions.

In exercise 5, I put many of the skills I had learned together to create deliverable maps that identified certain features that represented variations in the histogram. I thought it was interesting to change band combinations and colors to determine what the features were and enjoyed using my best judgment to represent the data. I did most of my adjustments in arc maps after using the subset and chip tool to choose the most representative part of the map in arc pro. The only problem I had was with my cursor defaulting to the pan and rotate tools, as it has before in ArcPRO, which necessitated me logging out and back into argo apps several times.

I created a map deliverable that utilized the best method of reducing visibility of the lines I could find. I tried many different types of kernel filters and determined that a 3x3 high pass filter looked the best to me. I also tried edge detect, edge enhance, other sharpen filters, and running the fourier transformation again on the fourier1.img layer, but none of the enhancements made the image as clear. I also attempted to create a custom kernel like the example, but I was unable to run this successfully.

There was not a map deliverable for this lab, but in exercise 4  we created a map that showed the percent area of the most erosive soils. This exercise reminded me of previous tasks I have completed with ArcMap, but it seemed to be an easier process. I can appreciate how this function will be useful for many different data types including stand type, population density, and other trends that can be uncovered by using formulas to select specific characteristics.

This map shows images in classes by area in a forested section of Washington state. It was  created  by a combination of ERDAS Imagine and ArcPro. Step 3 caused me the most problems, but it was not an extremely difficult task. I opened my tm_class.img to the viewer, opened the attribute tab, and added an area field. It was necessary that I change the name of the field so that it would show up in arcpro (I missed this step the first time). Then I went through the process of removing the layer so that the save dialog box would appear with no  errors. Then I reopened the .img and created a subset image of the map by using an inquire box named “tm_subset.img”. The errors began when I tried to run ARCPro. The program gave me a “loading map…” screen no matter how many times I force-quit, logged off, or even restarted my computer. After that issue was resolved, I was able to add my new  subset image to the map and add a legend and essential elements. I then shared/exported my map as a .jpg.