Skip to Content
Mastering Geospatial Analysis with Python
book

Mastering Geospatial Analysis with Python

by Silas Toms, Paul Crickard, Eric van Rees
April 2018
Beginner to intermediate content levelBeginner to intermediate
440 pages
11h 36m
English
Packt Publishing
Content preview from Mastering Geospatial Analysis with Python

Creating polygon geometry with OGR

OGR lets you write vector geometries such as points, lines, mulitipoints, multilinestrings, multipolygons and geometry collections. You can give these geometry values in coordinates or meters if you plan to project them later. All geometries you create follow the same procedure, separate points are defined and then strung together as lines or polygons. You define separate entities in numbers, encode them in well-known binary (WKB), and the final polygon is translated to well-known text (WKT). A Jupyter Notebook will return the coordinates of the polygon but won't plot it automatically, for this, we'll use Shapely later in this chapter:

In: from osgeo import ogr    r = ogr.Geometry(ogr.wkbLinearRing) r.AddPoint(1,1) ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Start your free trial

You might also like

Learning Geospatial Analysis with Python

Learning Geospatial Analysis with Python

Joel Lawhead

Publisher Resources

ISBN: 9781788293334Supplemental Content