GIS and Remote Sensing Tools, Tips and more ..

Finally on Nov 19 2013, Google shut down Google Maps v2 API, which was depreciated in May 19 2010 but was working continuously Nov 19. I was aware of version depreciation, but I procrastinate to upgrade till last minute because of working on too many other things. While checking my Web map (built on Openlayers, Geoserver and Google Maps as base layers (Google Maps API v2) on Nov 20, I saw two map controls one from Openlayers and other from Google Maps API also noticed that map application was unresponsive. Looking around I found easy steps to fix it without major change in the code-

From a couple of months, I have been involved in Tax certificate address verification project for educational purpose; I have around 8 million parcel address   collected and maintained by different tax collecting agencies in various format for instance COBOL ,CSV, ASCII, Excel , and some are even in pdf for their tax districts.  My task was to find the address from those different files and export them in CSV with corrected standard USPS address format (STREET, CITY, STATE, and ZIP) to make Universal Tax File format for data analysis by removing unwanted data from the address rows.   Initially, I used ZP4 software, it has “ official United States Postal Service data files on a single DVD-ROM that provides a powerful tool for automatically determining the correct mailing address, ZIP + 4 code, and mail carrier route number for any location in the United States”, works fine for few address (about 15%) which has proper USPS standard address format. The real challenge s...

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.

The Geographic Information Science Center of Excellence at South Dakota State University developed a web based West Nile virus (WNV) mapping application using Geosever, Openlayers, PostGIS,GeoWebCache, Jquery, Google visualization APIs, and, other open source technologies. This application allows users to pan, and zoom to visualize historical WNV patterns while using a slider bar to navigate through time. Users can click on counties to see -county level time-series graphs, case counts, and total population. The application also supports changing choropleth transparencies, choropleth classifications, and map backgrounds. Methods: A. OpenGeo tools: i.     Open layers ii.    Geoserver iii.   WebGeoCache iv.   PostGIS B. Google APIs i.       Google Maps API ii.      Google Charting API C.      HTML5 These are frequently refereed to as HTML5 technologies. Javascript HTML Canvas ...

From last couples of week, I have been involving to develop a interactive web interface for West Nile virus incidence dissemination across the conterminous US from 1999-2011. The image on the right shows one of my accomplishment using Geoserver,Openlayers,jQuery, PostgreGIS,and Google API. The project is about to launch online, then I will post a complete link of the project to let you guys play around it. Click to visit: Web application I am willing to help any one who is stuck with web maps/visualization and also seek constructive criticism on web stuffs.