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Python Geospatial Development - Third Edition

Author: Erik Westra
Publisher: Birmingham Packt Publishing 2016
Edition/Format:   eBook : Document : English : 3rd ed
Summary:
Cover -- Copyright -- Credits -- About the Author -- About the Reviewer -- www.PacktPub.com -- Table of Contents -- Preface -- Chapter 1: Geospatial Development Using Python -- Python -- Python 3 -- Geospatial development -- Applications of geospatial development -- Analysing geospatial data -- Visualizing geospatial data -- Creating a geospatial mash-up -- Recent developments -- Summary -- Chapter 2: GIS -- Core
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Details

Material Type: Document, Internet resource
Document Type: Book, Computer File, Internet Resource
All Authors / Contributors: Erik Westra
ISBN: 9781782174981 1782174982
OCLC Number: 1020708301
Description: 1 Online-Ressource (446 Seiten)

Abstract:

Cover -- Copyright -- Credits -- About the Author -- About the Reviewer -- www.PacktPub.com -- Table of Contents -- Preface -- Chapter 1: Geospatial Development Using Python -- Python -- Python 3 -- Geospatial development -- Applications of geospatial development -- Analysing geospatial data -- Visualizing geospatial data -- Creating a geospatial mash-up -- Recent developments -- Summary -- Chapter 2: GIS -- Core GIS concepts -- Location -- Distance -- Units -- Projections -- Cylindrical projections -- Conic projections -- Azimuthal projections -- The nature of map projections -- Coordinate systems -- Datums -- Shapes -- GIS data formats -- Working with GIS data manually -- Obtaining the data -- Installing GDAL -- Installing GDAL on Linux -- Installing GDAL on Mac OS X -- Installing GDAL on MS Windows -- Testing your GDAL installation -- Examining the Downloaded Shapefile -- Summary -- Chapter 3: Python Libraries for Geospatial Development -- Reading and writing geospatial data -- GDAL/OGR -- Installing GDAL/OGR -- Understanding GDAL -- GDAL example code -- Understanding OGR -- OGR example code -- GDAL/OGR documentation -- Dealing with projections -- pyproj -- Installing pyproj -- Understanding pyproj -- Proj -- Geod -- Example code -- Documentation -- Analyzing and manipulating Geospatial data -- Shapely -- Installing Shapely -- Understanding Shapely -- Shapely example code -- Shapely documentation -- Visualizing geospatial data -- Mapnik -- Installing Mapnik -- Understanding Mapnik -- Mapnik example code -- Mapnik documentation -- Summary -- Chapter 4: Sources of Geospatial Data -- Sources of geospatial data in vector format -- OpenStreetMap -- The OpenStreetMap data format -- Obtaining and using OpenStreetMap data -- TIGER -- The TIGER data format -- Obtaining and using TIGER data -- Natural Earth -- The Natural Earth data format

Obtaining and using Natural Earth vector data -- The Global Self-consistent, Hierarchical, High-resolution Geography Database (GSHHG) -- The GSHHG data format -- Obtaining the GSHHG database -- The World Borders Dataset -- The World Borders Dataset data format -- Obtaining the World Borders Dataset -- Sources of geospatial data in raster format -- Landsat -- The Landsat data format -- Obtaining Landsat imagery -- Natural Earth -- The Natural Earth data format -- Obtaining and using Natural Earth raster data -- Global Land One-kilometer Base Elevation (GLOBE) -- The GLOBE data format -- Obtaining and using GLOBE data -- The National Elevation Dataset (NED) -- The NED data format -- Obtaining and using NED data -- Sources of other types of geospatial data -- The GEOnet Names Server -- The GEOnet Names Server data format -- Obtaining and using GEOnet Names Server data -- The Geographic Names Information System (GNIS) -- The GNIS data format -- Obtaining and using GNIS data -- Choosing your geospatial data source -- Summary -- Chapter 5: Working with Geospatial Data in Python -- Pre-requisites -- Working with geospatial data -- Task - calculate the bounding box for each country in the world -- Task - calculate the border between Thailand and Myanmar -- Task - analyze elevations using a digital elevation map -- Changing datums and projections -- Task - changing projections to combine shapefiles using geographic and UTM coordinates -- Task - changing the datums to allow older and newer TIGER data to be combined -- Performing geospatial calculations -- Task - identifying parks in or near urban areas -- Converting and standardizing units of geometry and distance -- Task - calculating the length of the Thai-Myanmar border -- Task - finding a point 132.7 kilometers west of Shoshone, California -- Exercises -- Summary -- Chapter 6: Spatial Databases

Spatially-enabled databases -- Spatial indexes -- Introducing PostGIS -- Installing PostgreSQL -- Installing PostGIS -- Installing psycopg2 -- Setting up a database -- Creating a Postgres user account -- Creating a database -- Allowing the user to access the database -- Spatially enable the database -- Using PostGIS -- PostGIS documentation -- Advanced PostGIS features -- Recommended best practices -- Best practice: use the database to keep track of spatial references -- Best practice: use the appropriate spatial reference for your data -- Option 1: Using GEOGRAPHY fields -- Option 2: Transforming features as required -- Option 3: Transforming features from the outset -- When to use unprojected coordinates -- Best practice: avoid on-the-fly transformations within a query -- Best practice: don't create geometries within a query -- Best practice: use spatial indexes appropriately -- Best practice: know the limits of your database's query optimizer -- Summary -- Chapter 7: Using Python and Mapnik to Generate Maps -- Introducing Mapnik -- Creating an example map -- Mapnik concepts -- Data sources -- Shapefile -- PostGIS -- Gdal -- MemoryDatasource -- Rules, filters, and styles -- Filters -- "Else" rules -- Styles -- Symbolizers -- Drawing points -- Drawing lines -- Drawing polygons -- Drawing text -- Drawing raster images -- Maps and layers -- Map rendering -- Summary -- Chapter 8: Working with Spatial Data -- About DISTAL -- Designing and building the database -- Downloading and importing the data -- The World Borders Dataset -- The GSHHG shoreline database -- US place names -- Non-US place names -- Implementing the DISTAL application -- The "select country" script -- The "select area" script -- Calculating the bounding box -- Calculating the map's dimensions -- Rendering the map image -- The "show results" script -- Identifying the clicked-on point

Identifying matching place names -- Displaying the results -- Using DISTAL -- Summary -- Chapter 9: Improving the DISTAL Application -- Dealing with the anti-meridian line -- Dealing with the scale problem -- Performance -- Finding the problem -- Improving performance -- Calculating the tiled shorelines -- Using the tiled shorelines -- Analyzing the performance improvement -- Summary -- Chapter 10: Tools for Web-Based Geospatial Development -- Tools and techniques for geospatial web development -- Web applications -- A bare-bones approach -- Web application stacks -- Web application frameworks -- User interface libraries -- Web services -- An example web service -- Map rendering using a web service -- Tile caching -- The "slippy map" stack -- Geospatial web protocols -- A closer look at three specific tools and techniques -- The Tile Map Service protocol -- OpenLayers -- GeoDjango -- Learning Django -- GeoDjango -- Summary -- Chapter 11: Putting It All Together - a Complete Mapping System -- About the ShapeEditor -- Designing the ShapeEditor -- Importing a shapefile -- Selecting a feature -- Editing a feature -- Exporting a shapefile -- Prerequisites -- Setting up the database -- Setting up the ShapeEditor project -- Defining the ShapeEditor's applications -- Creating the shared application -- Defining the data models -- The Shapefile object -- The Attribute object -- The Feature object -- The AttributeValue object -- The models.py file -- Playing with the admin system -- Summary -- Chapter 12: ShapeEditor - Importing and Exporting Shapefiles -- Implementing the shapefile list view -- Importing shapefiles -- The Import Shapefile form -- Extracting the uploaded shapefile -- Importing the shapefile's contents -- Opening the shapefile -- Adding the Shapefile object to the database -- Defining the shapefile's attributes

Storing the shapefile's features -- Storing the shapefile's attributes -- Cleaning up -- Exporting shapefiles -- Define the OGR shapefile -- Saving the features into the shapefile -- Saving the attributes into the shapefile -- Compressing the shapefile -- Deleting temporary files -- Returning the ZIP archive to the user -- Summary -- Chapter 13: ShapeEditor - Selecting and Editing Features -- Selecting the feature to edit -- Implementing the Tile Map Server -- Setting up the base map -- Tile rendering -- Completing the Tile Map Server -- Using OpenLayers to display the map -- Intercepting mouse clicks -- Implementing the "Find Feature" view -- Editing features -- Adding features -- Deleting features -- Deleting shapefiles -- Using the ShapeEditor -- Further improvements and enhancements -- Summary -- Index

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