By Angel Marquez
ISBN-10: 1784395293
ISBN-13: 9781784395292
Learn the best way to construct robust spatial database strategies with PostGIS speedy and efficiently
About This Book
- Learn how one can build your personal strategies utilizing the main intriguing Geographic details procedure (GIS) software out there, PostGIS
- Use this publication to enhance a whole GIS software from scratch
- A useful, agile, and step by step consultant for utilizing PostGIS to create nice GIS solutions
Who This e-book Is For
This booklet is a short consultant for somebody who desires to start with PostGIS and advance their own GIS tasks quickly.
What you are going to Learn
- Install and configure PostGIS and different helpful open resource instruments corresponding to QGIS and GDAL for operating with spatial data
- Create spatial databases and tables from scratch and improve spatial queries via sensible examples
- Obtain invaluable spatial facts from public and loose resources and insert and deal with this knowledge to be necessary together with your facts tables
- Familiarize your self with the basic strategies in PostGIS and spatial databases
- Visualize the knowledge saved on your tables and mix it with different information assets to create attractive graphical suggestions utilizing QGIS
- Use the GDAL spatial library to remodel and reproject from quite a lot of facts codecs equivalent to vectorial and raster geospatial facts formats
- Develop a whole GIS program from scratch through imposing the recommendations realized within the book
In Detail
PostGIS is among the world's major spatial databases, created as a geographic extension for PostgreSQL. With it, clients may be able to manage and visualize spatial info tremendously successfully and efficiently.
PostGIS necessities introduces you to the basics of PostGIS, providing you with quick access to at least one of the preferred and strong spatial databases to be had at the present time. you'll commence via studying the right way to set up and effectively arrange PostGIS earlier than masking tips on how to create your first spatial database. The publication will then assist you to increase your talents extra as you'll how to insert GIS gadgets in addition to tips to pick out and filter out GIS queries with transparent and useful details. you are going to then how you can show GIS facts graphically and create powerful visualizations. The ebook concludes with counsel, tips, and methods that can assist you optimize PostGIS and enhance the functionality of your database.
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Additional info for PostGIS Essentials
Example text
The International Association of Oil and Gas Producers has defined a collection of Coordinate Reference System (CRS) known as the European Petroleum Survey Group (EPSG) dataset and has assigned a unique ID to each of these SRSs; this ID is called SRID. For uniquely defining a position, you must establish the SRS that it belongs to, using its particular ID; this is the SRID. There are literally hundreds of SRSs defined; to avoid any possible error, we must standardize which SRS we will use. A very common SRS, widely used around the globe and the one that we will use in this book, is the WGS84 SRS with the SRID 4326.
Before we can start to develop the first database, we have to make executable binaries of PostgreSQL visible to our operative system, in this case Windows 7. For this, we will include the application's path to the PATH system variable. Then, select the System Variables grid and select the row with the Path value on the Variable field. A window named Edit System Variable will show up. 3\bin. Restart your computer for the changes to take effect. Now we can start to build the first spatial database using the command line, by following the next series of steps: For creating the database, click on the Start button and type in the Search programs and files section cmd.
Com, you can use this to access PacktLib today and view 9 entirely free books. Simply use your login credentials for immediate access. Preface PostGIS is basically an extension of PostgreSQL DBMS that allows it to manage spatial datatypes. It was developed by Refractions Research Inc, a Canadian company, and published under the GNU license. Through the years, PostGIS has been observed to be a better solution than many of the other options on the market. A lot of these solutions are proprietary.
PostGIS Essentials by Angel Marquez
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