Steven Arnold
MSGIS PORTFOLIO
Geoprocessing with Python
Image 1: Graphical User Interface (GUI) allows the user to load a GIS layer and enter a weight percentage.
Image 2: Python script that takes the GIS layers and weight percentages entered in the GUI and runs the analysis on the data.
Image 3: Final output layers indicating the ideal parcels to purchase based on the data entered by the user.
Skills: Python Scripting, Spatial Data & Algorithms, GIS Workflow
When faced with repetitive tasks, assorted steps and short deadlines in a GIS environment; knowledge of and the use of a Python script is a time saving and valuable tool.
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This course was an introduction to the Python programming language and its use in manipulating and analyzing geographic data. Overall this course covered:
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Principles and good practice in computer programming
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Python language
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Manipulating and analyzing geographic information with Python
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Scripting with Python in ArcGIS
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Python toolkit, databases, and Graphical User Interfaces (GUI)
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This project focused on the creation of a GUI that a user would interact with by entering GIS layers and assigning a weight percentage to each layer to be analyzed. A Python script uses the input data from the GUI and runs the following steps for the analysis:
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Calculate the Euclidean Distance for each parameter
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Reclassify the Euclidean Distance into thirds (1, 2 or 3)
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Convert the Reclassified Euclidean Distance of each parameter to a Weighted Overlay Table
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Convert the Raster to a Polygon
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Use the polygon to select parcels by location
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Categorize parcels to Apartments, Condos or Other
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Display the categorized parcels in a new mxd
This project demanded the acquisition of python scripting knowledge and skills through: online python courses, extensive online research, ESRI help and other resources. Parsing the script and overcoming obstacles for this project; is a significant skill set acquired and a must for a GIS professional.