May 2016
Beginner to intermediate
446 pages
10h 7m
English
Content preview from Python Geospatial Development - Third EditionBecome 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,
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Performance
Our DISTAL application is certainly working, but its performance leaves something to be desired. While the selectCountry.py and selectArea.py scripts run quickly, it can take two seconds or more for the showResults.py script to complete. Clearly, this isn't good enough: a delay like this is annoying to the user but would be disastrous for the server if it started to receive more requests than it could process.
Finding the problem
Adding some timing code to the showResults.py script soon shows where the bottleneck lies:
Calculating lat/long coordinate took 0.0110 seconds Identifying place names took 0.0088 seconds Generating map took 3.0208 seconds Building HTML page took 0.0000 seconds
Clearly, the map-generation process is the problem ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.