Search icon CANCEL
Subscription
0
Cart icon
Your Cart (0 item)
Close icon
You have no products in your basket yet
Arrow left icon
Explore Products
Best Sellers
New Releases
Books
Videos
Audiobooks
Learning Hub
Free Learning
Arrow right icon
Arrow up icon
GO TO TOP
Geospatial Development By Example with Python

You're reading from   Geospatial Development By Example with Python Build your first interactive map and build location-aware applications using cutting-edge examples in Python

Arrow left icon
Product type Paperback
Published in Jan 2016
Publisher
ISBN-13 9781785282355
Length 340 pages
Edition 1st Edition
Languages
Tools
Arrow right icon
Author (1):
Arrow left icon
Pablo Carreira Pablo Carreira
Author Profile Icon Pablo Carreira
Pablo Carreira
Arrow right icon
View More author details
Toc

Table of Contents (12) Chapters Close

Preface 1. Preparing the Work Environment 2. The Geocaching App FREE CHAPTER 3. Combining Multiple Data Sources 4. Improving the App Search Capabilities 5. Making Maps 6. Working with Remote Sensing Images 7. Extract Information from Raster Data 8. Data Miner App 9. Processing Big Images 10. Parallel Processing Index

Importing geocaching data

In the previous chapter, we generalized our import function by adding the capability to import more types of data supported by OGR.

Now, we will improve it again, make it handle some errors, make it compatible with our objects, and add two new capabilities. We will also convert the data in order to produce uniform objects.

To achieve our goals, we will analyze what kind of information is stored in the files that we want to open. We will use OGR to inspect the files and return some information that may help us with the data conversion.

First, let's alter our open_vector_file function, allowing it to handle incorrect paths and filenames, which is a very a common error. Perform the following steps:

  1. Go to the utils folder and open the geo_functions.py file.
  2. Add the following import statements at the beginning of the file:
    # coding=utf-8
    
    import ogr
    import osr
    import gdal
    import os
    from pprint import pprint
  3. Now, edit the open_vector_file function via the following code...
lock icon The rest of the chapter is locked
Register for a free Packt account to unlock a world of extra content!
A free Packt account unlocks extra newsletters, articles, discounted offers, and much more. Start advancing your knowledge today.
Unlock this book and the full library FREE for 7 days
Get unlimited access to 7000+ expert-authored eBooks and videos courses covering every tech area you can think of
Renews at $19.99/month. Cancel anytime
Banner background image