No GIS Assistance Today (07/09)

Let's see how good everyone is without step by steps, yeah?

1. Create a raster file showing the 10-meter resolution elevation model within 5 miles of TCU. Please ensure this file is projected as state plane feet. You will get the 10-meter elevation file from the USDA-NRSC: Geospatial Gateway. You will need to fill out a form to request the data which will be emailed to you as a link. This means please do not wait until 30 minutes before class begins to do this as you may not get your link on time. We have not yet used this source, so do not get frustrated. I have confidence in all of us that we can figure it out!
• Symbolize your resulting raster using 10 equal interval classes. What is the range of the highest class, representing the highest elevation values?
  


• Getting to Know ArcGIS: Chapter 6, exercises 6a, 6b, 6c, 6d. (pps. 131-173)
  

Reminder: Exam Next Thursday (07/14)

New Tools:

1. Convert USGS DEM to GRID (ArcToolbox/Conversion Tools/To raster/DEM to Raster)
2. Raster Mosaic (ArcToolbox/Data Management Tools/Raster/Raster Dataset/Mosaic to New Raster)
3. Clip Raster (ArcToolbox/Data Management Tools/Raster/Raster processing/Clip)

Create the following raster images representing 1 mile around UT Arlington:

1. National Elevation Dataset [TNRIS]
2. Digital Raster Graphic (DRG) [TNRIS]
3. 2010 1-meter NAIP Imagery [TNRIS]
4. LandSat 7 Imagery [Columbia Regional Geospatial Service Center]
• Use composite image/321 images. The 321 images are the 'natural color' images.

Check it out for yourself. Download the shapefile here.

Which 'Stadiums Arenas & Athletic Fields' within a 10-mile radius in Texas has the highest 'On-site Release Total' from industrial emissions reports to the EPA.

Data sources you will need:

• ReferenceUSA (Define as NAD83)
  
• TRI (Define as NAD83)
1. Of course use the 2009 (latest) file. When the comma separated values (.CSV) file displays in your browser, hit File/Save to save it to your desktop. Make sure the file has a .CSV extension so Excel can easily open it.

Sorry guys, I forgot initially to include the buffer amount. Thank you to the student who brought this to my attention.

Let's pull it all together today so we can move on. After today, we will be moving on to raster data.

New Skills Learned Today:

1. Excel ratios
2. Projecting to State Plane (feet)
3. Merging shapefiles
4. Creating Personal geodatabases

Exercise #1: What is the % change in the population with cancer within a 5-mile radius around UT Arlington?

• Download prepared SimplyMap data
• To calculate % change, divide the difference by the original number.
• For example, to calculate the % change from a 2000 population to 2010 population:
• (2010Pop - 2000Pop)/2000Pop
• We will also need the Merge Tool: ArcToolbox/Data Mangement Tools/general/Merge
• Is a good idea to join any attributes and export before merging if your tables are by county.
  

Exercise #2: Project the data into State Plane Feet and put inside a Personal Geodatabase

• Create a simple Personal Geodatabase: ArcToolbox/Data Management Tools/Workspace/Create Personal GDB
• Two Methods to Project a Feature Class:
1. ArcToolbox/Data Management Tools/Projections and Transformations/Feature/Project
2. Ensure the Data Frame is set to the desired coordinate system (right-click 'Layers' and select Properties, and go to Coordinate System tab). Then Export the feature class using the same coordinate system as the Data frame.
   

Exercise #3: Determine how many counties intersect a 5-mile radius around your college.

• 1 county = lucky
• 2 county = unlucky
• 3+ county = unreasonable, you may select another college if you wish