Monday, April 5, 2010

Learning ArcGIS 3D Analyst


Week 11's final post involved learning a little about 3D Analyst - Mod 1 focused on ArcScene. I found this rather interesting in the example that was used was Mt. Shavano - a sight I saw daily for about 12 years as I lived and worked in the vicinity of Mt Shavano. My view is approximately the direction looking west towards Mt Shavano - and when the snow is right - the Angel of Shavano appears. It's a beautiful area.

Learning ArcGIS Spatial Analyst




Another task for Week 11 was to go through Module 1 regarding the Spatial Analyst Tools. I have worked a bit with the spatial analyst toolbox and model builder but had not really worked the command line option so that was good to learn.

Creating and Editing Labels And Annotation




Our tasks were to complete Module 1 and create 2 jpgs from the exercise portions of the module. I actually learned a few things on labeling as our work labeling tends to be simple and mostly on-the-fly. I am going to try to incorporate some of this into one of my projects as they don't have access to Maplex.

Thursday, March 18, 2010

Week 9 Vector Analysis II


The lab was to create buffer polygons based on criteria using 3 different polygon layers, then determine where these buffer areas intersected. We created areas for potential campsites that were within 300 meters of existing roadways, within 150 meters of lakes, and within 500 meters of rivers. We were also asked to exclude areas that were considered conservation areas. The answers to the following questions:

1, I used the intersect tool - intersecting the road buffer and the water buffer files. I did not find any difference between the two.

2. I used the erase tool to exclude areas that fell into the conservation areas since as campgrounds could not fall into those areas.

3. I ended up with 79 separate polygons. Acreage of the largest feature was 1918.77, acreage of the smallest feature was 0.18.

Sunday, March 14, 2010

Extra Credit GIS 4043




The extra credit exercise we were given involved bringing in data and joining to our attribute table as a way of analysizing outside data within GIS. We were to locate and symbolize the four largest landowners in Gulf County, Florida. This was done with data from the Florida Department of Revenue. In order to join tables with a shapefile - you need to have some common field. The field names do not need to be identical but they do need to hold the same data. This was a fun and quick exercise.

Tuesday, March 2, 2010

Week 7 Data Editing


We created an ArcMap. We created a new shapefile. We digitized features from aerial photos - creating, correcting, and snapping.