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You're reading from  Learning Geospatial Analysis with Python - Third Edition

Product typeBook
Published inSep 2019
Reading LevelIntermediate
PublisherPackt
ISBN-139781789959277
Edition3rd Edition
Languages
Python
Tools
QGIS
Concepts
Geospatial Analysis
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Joel Lawhead
Joel Lawhead
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Joel Lawhead

Joel Lawhead is a PMI-certified Project Management Professional (PMP), a certified GIS Professional (GISP), and vice president of NVision Solutions, Inc., an award-winning firm specializing in geospatial technology integration and sensor engineering for NASA, FEMA, NOAA, the US Navy, and many other commercial and non-profit organizations. Joel began using Python in 1997 and started combining it with geospatial software development in 2000. He has authored multiple editions of Learning Geospatial Analysis with Python and QGIS Python Programming Cookbook, both from Packt. He is also the developer of the open source Python Shapefile Library (PyShp) and maintains a geospatial technical blog.
Read more about Joel Lawhead

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What are web services?

Geospatial web services allow users to perform data discovery, data visualization, and data access across the web. Web services are usually accessed by applications based on user input, such as zooming in to an online map or searching a data catalog. The most common protocols are the Web Map Service (WMS), which returns a rendered map image, and Web Feature Service (WFS), which typically returns GML, which was mentioned in this chapter's introduction.

Many WFS services can also return KML, JSON, zipped shapefiles, and other formats. These services are called through HTTP GET requests. The following URL is an example of a WMS GET request, which returns a map image of the world that is 640 pixels wide and 400 pixels tall and has an EPSG code of 900913: http://ows.mundialis.de/services/service?SERVICE=wms&VERSION=1.1.1&REQUEST=GetMap&FORMAT...

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Learning Geospatial Analysis with Python - Third Edition
Published in: Sep 2019Publisher: PacktISBN-13: 9781789959277
© 2019 Packt Publishing Limited All Rights Reserved

Author (1)

author image
Joel Lawhead

Joel Lawhead is a PMI-certified Project Management Professional (PMP), a certified GIS Professional (GISP), and vice president of NVision Solutions, Inc., an award-winning firm specializing in geospatial technology integration and sensor engineering for NASA, FEMA, NOAA, the US Navy, and many other commercial and non-profit organizations. Joel began using Python in 1997 and started combining it with geospatial software development in 2000. He has authored multiple editions of Learning Geospatial Analysis with Python and QGIS Python Programming Cookbook, both from Packt. He is also the developer of the open source Python Shapefile Library (PyShp) and maintains a geospatial technical blog.
Read more about Joel Lawhead

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