GIS Programming- Geoprocessing

-

 This week we learned how to complete geoprocessing tasks with python scripts and models. The goal was to create a model in ArcGIS Pro and a python script. The script was to create XY coordinates in a shapefile, then create a 1000 meter buffer around it, and finally dissolve the buffer into a shapefile.

I began this script by establishing my module and environments. I imported the arcpy module and my environment. I based this on previous template scripts. I then established my workspace and shapefile. Next, I created the XY coordinate script. I added the AddXY function and instructed it to print a message when done. To create the buffer, I used the buffer analysis function and established my parameters. I set my buffer to 500 meters so the diameter would be 1000 meters. To create the dissolve buffer script, I used the dissolve function with my input and output. Finally, I inserted two print messages after each function. The first message informs the user what is happening and the second prints the get messages function from ArcGIS pro. I also encountered an error with the buffer function not running because the file already existed. I added the overwriteOutput tool and set it to true to allow overwriting.

The final output is included below:

 


 

Comments

Post a Comment

Popular posts from this blog

GIS Programming- Exploring and Manipulating Data

-
Image
 This week we learned about exploring and manipulating data in ArcGIS Pro with Python scripting. We learned about a variety of tools and methods, such as describe, exist, listing, dictionaries, and cursors. In the assignment, we were given a variety of tasks. First, we were to create a new file geodatabase. Next, we were to list all of the feature classes in another folder. We then copied those feature classes into the new file geodatabase. Using one of the files in the new geodatabase, we used the search cursor to identify the objects that matched specific criteria and printed that information. Finally, we created a dictionary with this information.  I encountered issues with populating the empty dictionary. I was attempting to use the row.getvalue method,  I kept receiving the error that my tuple did contain the attribute. I began my troubleshooting by searching for various methods to update dictionaries. From there I edited small things in my script, such as the input ...
Read more

Spatial Data Quality Standards

-
Image
 This week we learned about the various data quality standards, specifically NMAS and NSSDA. In our exercise, we applied the NSSDA methodology to test the accuracy of two maps in Albuquerque, NM. The two maps are from the city of Albuquerque and StreetMaps USA. I used Minnesota Planning's Positional Accuracy Handbook as a reference(1999).  After downloading the provided data and before starting the analysis, I first created my excel spreadsheet based on the worksheet provided by the Positional Accuracy Handbook (Minnesota Planning, 1999). Next, I created a point feature class and selected my 20 sampling points, referenced in Figure 1. I made sure the points were properly distributed, with each quadrant having less than 20% of the points. They are all located at intersections.  Figure 1. 20 sampling points on the city of Albuquerque's map. I then created two more feature classes for the StreetMaps USA map and the reference points. I made sure that I went in the same order ...
Read more

A little bit about me..

-
Hi there! My name is Emily Talbert and I am currently working on my master's in Historical Archaeology at UWF. I received my bachelor's in Anthropology from the University of South Alabama. This is my second GIS course, the first of which was focused only on archaeology, so I am excited to get a broader understanding of GIS. I am hoping to gain a really solid foundation in GIS that I will be able to apply to my future career in archaeology. I know that GIS is a valuable skill, so I am trying to learn as much as I can! Outside of school, I spend most of my time with my kitten, baking, cooking, hanging out with my friends, and distance running. Here is my story map:  https://arcg.is/TafeO.
Read more