National Geodetic Survey (NGS) developed videos to give you a better understanding of NGS' plans to release new datums in 2022. If you use mapping products or other geo-spatial tools, these videos should also help you find out how you can prepare for the new datums. . It’s a number of years off - but the links explain the changes and provide some initial knowledge that may help you prepare for their advent…
This series of short videos, produced in collaboration between NOAA's National Geodetic Survey and The COMET Program, a part of UCAR's Community Programs, provides an introduction to geodetic datums for anyone who uses mapping products or other geo-spatial tools.
In the first video, "What are Geodetic Datums?" (4:36), explains the basic concepts behind geodetic datums, where they are used, and why it is important to know about and use the correct datums.
Sunday, August 31, 2014
Thursday, January 17, 2013
Geospatial data Mashups with Google
Abstract
Analyzing space-time variation is common in Geography. Appropriate geo-spatial visualization enables us to understand data in a precise manner. There have been numerous researches, tools, and methods in pursuit of a better visualization method for geospatial data. Here we present the sets of examples developed by us to show the benefits of the web cartography using Google Earth/Google Maps mashups to display geospatial data. Moreover, we include the practical implication of applications that are useful for visualizing geospatial world.
Analyzing space-time variation is common in Geography. Appropriate geo-spatial visualization enables us to understand data in a precise manner. There have been numerous researches, tools, and methods in pursuit of a better visualization method for geospatial data. Here we present the sets of examples developed by us to show the benefits of the web cartography using Google Earth/Google Maps mashups to display geospatial data. Moreover, we include the practical implication of applications that are useful for visualizing geospatial world.
Tuesday, January 15, 2013
2013 Free and Open Source Geospatial Software Conference
FOSS4G is the global conference for Free and Open
Source Software for Geospatial, organized by the Open Source Geospatial
Foundation (OSGeo).
In 2013, 2013 FOSS4G North America Conference
(FOSS4G-NA) will take place May 22-24 at the Marriott
City Center in Minneapolis, MN. The gathering of Open Source Geospatial
Developers, Users and Leaders from North America will offer a broad program to
discuss and build tools to help solve some of the world’s most pressing
problems and business needs.
The 2013 FOSS4G International Conference is currently scheduled for September 17-21 in Nottingham, UK.
Sunday, January 13, 2013
Popular GIS Books
Wednesday, January 9, 2013
GIS Programming for GIS Analyst using Python
Penn state has a nice collection of ArcGIS & Python
programming step by step guide for their
GEOG 485 students, which is also available for non-students via Penn state
website. This course’s is main aim is to
make student able to use the Python scripting
language to automate GIS tasks in ArcMap, assemble ArcView geoprocessing
tools into models to solve GIS problems, and run the tools from scripts to
automate GIS tasks.
Although no
previous programming experience is assumed, the course's target is to make a student as a GIS programmer/analyst in ArcGIS and Python environment.
The course is basically
divided into four parts:
Tuesday, January 8, 2013
Spatial Developer must keep in your shelf : Book Review
One of my client’s requirements was to create and open source geospatial DBMS to hold utilities and city shape files. As looking through the internet, I found PostGIS is an open source software program that adds support for geographic objects to the PostgreSQL object-relational database. As project reference, I choose PostGIS in Action, as project accomplished successfully I realized my judgment was excellent.
PostGIS in Action is a very comprehensive introduction to PostGIS for developers of all levels of experience. Basically it is split into 3 parts:
Part 1- Nice and slow startup with PostGIS. You can skip this section if you have prior knowledge about any kinds of spatial databases and geometry data types.
Part 2- Put PostGIS in work. It contains technical details on proximity analysis, geocoding addresses, manipulating polygons and lines, and scaling and rotating geometries as well as efficient queries and how to tune your database and
selection of appropriate indexes and keys for your data.
Part 3- Use of PostGIS with other tools and frameworks. It describes manage raster datasets in PostGIS with PostGIS raster module, development of Web applications using PostGIS.
The Book will provide the much needed skills in building a spatial database, Application Server, Desktop GIS and Cartographic map renderer, Map tile server and Web map component using the following software: PostGIS/PostgreSQL, GeoServer, Apache/Tomcat, uDIG, Openjump, QGIS, GRASS GIS and Openlayers.
Friday, May 6, 2011
Geospatial Analysis to Find Bin Laden's Hideout
Think, how powerful in geospatial technology? Finding Bin Laden using GIS?..........Are you kidding me? .......Take a look on this article from Good politics share the UCLA students' research on finding Bin Laden's possible hideouts using geographical theories and GIS software.
The students were work under Prof. Thomas Gillespie and John Agnew, UCLA, were published their findings in MIT International Review(Pdf).
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