Week 4: Spatial Enhancement, Multispectral Data, and Band Indices

This week we continued working with ERDAS Imaging and ArcGIS Pro to apply filters. Map 1 shows the snow peaks on Mount Olympus, Washington. I began with an image in True Color and changed it as RBG value of 5, 4, 3. This range is known as False Natural Color. 

Once I opened the image in ArcGIS, I had issues with the program slowing down and could not adjust many elements of the map. I was able to get the map frame and legend to an acceptable position and size but had issues with the text boxes. I also couldn't adjust the frame of the map, so the area I would like to show is in the NE quadrant. 

I also cannot get the map image below to resize. 

Map 1. Figure showing snow in blue and vegetation in green.

GIS5027: Week 3 Intro to ERDAS Imagine and Digital Data

In this week's lab, we were introduced ERDAS Imagine. I began with basic tasks, including learning the a few tools and how to use the viewer. EDRAS is used for remote sensing and image processing tasks with satellite or aerial images. Map 1 was created in a two-step process using both ERDAS Imagine and ArcGIS Pro.

Map 1. TM Subset data created in ERDAS and displayed in ArcGIS Pro.

The map illustrates a small area of a Landsat Thematic (TM) image that contained 7 bands of multispectral imagery at 30 meter resolution. In ERDAS, I selected a smaller section of the original image for exportation, after I created a new field in the attribute table to calculate the total hectares of each of the multispectral bands, or "classes" of the subset. Each class shows the distribution of different surface features, such as vegetation, clouds, and water across a section of mountains.

The data was exported to ArcGIS Pro as the program is ideal for map production.