Introduction to Ag Informatics

Outline for Today

• Spatial data
• Introduction to geometry in Python
• From geometry to spatial data
• Putting spatial data to map in Django

Recap

Field 200

Tools

• Software Suite
  e.g. Google Earth, ArcGIS, QGIS
• Software as a Service
  Google Map, MapBox
• Software Library
  
  • Python: ArcPy, Shapely GeoPandas
  • JavaScript: LeafLet
  • PHP: GeoPHP
  • R
  • Rust: GeoRust

Geometry fundamental elements

Geometry fundamental elements

Point

Geometry fundamental elements

Line

Geometry fundamental elements

Polygon

Geometry in action

Geometric Object In Python

Shapely

Manipulation and analysis of geometric objects in the Cartesian plane

Live Demo

Check out this Jupiter Notebook

From Geometry To GeoSpatial

GeoPandas

            import geopandas as gpd
            world_df = gpd.read_file(
                    gpd.datasets.get_path('naturalearth_lowres')
            )
        

                world_df.plot()
            

            import numpy as np
            world_df['log_gdp'] = np.log(world_df['gdp_md_est'])
            world_df.plot("log_gdp")
        

            world_df = world_df.to_crs(
                "+proj=eck4 +lon_0=0 +x_0=0 +y_0=0 +datum=WGS84 +units=m +no_defs"
            )
            world_df.area
        

Common File types

Open Data Source

• ArcGIS
• Open Data Soft
• Indiana Map
• US Census
• Free GIS Data

Questions?

License

• Attribution Recommendation: Introduction to Agricultural Informatics Course", Tam Bureetes, Purdue University. Available at https://github.com/ag-informatics/ag-informatics-course. Licensed by CC BY-NC-SA 4.0.

This course is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) license. This is a human-readable summary of (and not a substitute for) the license. Official translations of this license are available in other languages.

You are free to:

• Share — copy and redistribute the material in any medium or format
• Adapt — remix, transform, and build upon the material

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• NonCommercial — You may not use the material for commercial purposes.
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