By Paolo Corti, Stephen Vincent Mather, Thomas J. Kraft, Bborie Park
http://www.packtpub.com/postgis-to-store-organize-manipulate-analyze-spatial-data-cookbook/book
combine PostGIS with net frameworks and enforce OGC criteria corresponding to WMS and WFS utilizing MapServer and GeoServer
Convert second and 3D vector info, raster info, and routing info into usable forms
Visualize info from the PostGIS database utilizing a computing device GIS application akin to QGIS and OpenJUMP
Easy-to-use recipes with complicated analyses of spatial info and functional applications
What you'll study from this book
Import and export geographic facts from the PostGIS database utilizing the to be had tools
constitution spatial facts utilizing the performance supplied through the mix of PostgreSQL and PostGIS
paintings with a suite of PostGIS features to accomplish simple and complicated vector analyses
attach PostGIS with Python
discover ways to use programming frameworks round PostGIS
hold, optimize, and fine-tune spatial info for long term viability
discover the 3D services of PostGIS, together with LiDAR aspect clouds and aspect clouds derived from constitution from movement (SfM) techniques
Distribute 3D versions during the internet utilizing the X3D standard
Use PostGIS to enhance robust GIS internet functions utilizing Open Geospatial Consortium net standards
grasp PostGIS Raster
In Detail
PostGIS is a spatial database that integrates complicated garage and research of vector and raster info, and is remarkably versatile and robust. PostGIS presents aid for geographic gadgets to the PostgreSQL object-relational database and is presently the most well-liked open resource spatial databases. with the intention to discover the entire variety of PostGIS recommendations and reveal the similar extensions, this e-book is a must-have.
This publication is a deep-dive into the complete variety of PostGIS themes, with sensible functions of the ideas and code. it's a finished advisor on PostGIS instruments and ideas that are required to regulate, control, and examine spatial facts in PostGIS. This publication is jam-packed with systematic directions of hands-on examples and in-depth motives. Even for knowledgeable clients, this ebook will function an exceptional resource of reference by way of offering new methods of operating with PostGIS throughout the book's easy-to-follow approach.
This hands-on advisor appears at key spatial info manipulation projects, explaining not just how every one activity is played, but in addition why. It offers sensible counsel permitting you to soundly make the most of the complicated expertise in PostGIS with a view to simplify your spatial database management tasks.
This sensible booklet can assist you're taking benefit of simple and complicated vector, raster, and routing methods. you'll discover ways to use the innovations of knowledge upkeep, optimization, and function, in an effort to assist you to combine those right into a huge environment of computing device and internet tools.
With this complete advisor, you may be armed with the entire instruments and directions you want to either deal with the spatial database procedure and make larger judgements as your project's necessities evolve.
Approach
An easy-to-use advisor, choked with hands-on recipes for manipulating spatial information in a PostGIS database. each one subject is defined and put in context, and for the extra inquisitive, there are extra info of the options used.
Who this ebook is for
If you're a net developer or a software program architect, specifically in location-based businesses, and need to extend the variety of strategies you're utilizing with PostGIS, then this booklet is for you. you will have a few past event with PostgreSQL database and spatial concepts.
Read or Download PostGIS Cookbook PDF
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Extra info for PostGIS Cookbook
Example text
So extension. The output obtained is passed as an input to the next grep command to look for the libc string. The output is further given to the wc command to count the number of lines. Regular expressions Regular expression (also known as regex or regexp) provides a way of specifying a pattern to be matched in a given big chunk of text data. It supports a set of characters to specify the pattern. It is widely used for a text search and string manipulation. A lot of shell commands provide an option to specify regex such as grep, sed, find, and so on.
This operator works on any data such as a string, integer, float, array, and so on. 9 # Changing value of var to float value Arithmetic operators Arithmetic operators are used for doing arithmetic operations on integers. They are as follows: • + (plus) • - (minus) • * (multiplication) • / (division) • ** (exponentiation) • % (modulo) • += (plus-equal) • -= (minus-equal) • *= (multiplication-equal) • /= (slash-equal) • %= (mod-equal) To perform any arithmetic operation, we prefix the expr and let keywords before the actual arithmetic expression.
Consider the following example: $ cat /proc/cpuinfo | less Here, the cat command, instead of displaying the content of the /proc/cpuinfo file on stdout, passes its output as an input to the less command. The less command takes the input from cat and displays on the stdout per page. Another example using pipe is as follows: $ ps -aux | wc -l system # Showing number of currently running processes in 254 Pipeline Pipeline is a sequence of programs/commands separated by the operator ' | ' where the output of execution of each command is given as an input to the next command.
