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
Friday, August 29, 2014
Leaflet TypeError: t is null
There are may be several reasons for TypeError:t is null, but I solved my problem by changing-
L.marker(LATITUDE,LONGITUDE).bindPopup("Info").addTo(map);
to
L.marker(L.latLng(LATITUDE,LONGITUDE)).bindPopup("Info").addTo(map);
Tuesday, August 26, 2014
Job Title: GIS Parcel Maintenance & Election Systems Tech
Job Summary:
Incumbent provides general and technical support services as necessary for maintenance and support of the Scott County Geographic Information Systems (GIS). Primary responsibilities include the following for GIS: updating digital cadastral database, editing existing parcels, mapping new subdivisions and surveys, providing map production and creation of reports, maintaining spatial datasets and databases. For election systems: maintaining electronic poll books; training election officials on use of electronic poll books; preparing various items of election data for production of ballots and programming of election tabulators and voter assistance terminals.
Wednesday, August 13, 2014
Jquery Multiple Range Slider With Floating Points
I was working on a GIS project, which required four range sliders with floating points to set LCLU change threshold. I finally find out a nice jQuery based multiple range slider at http://jsfiddle.net/q5WEe/1/ The compiled fiddle as a web page source is shown in the Part 1.
Then, my goal was to put floating points on the slider bar value display, but the native jQuery slider bar doesn't support the floating point. jQuery always roundup the floating values to the nearest integer. To display the floating point (for example,0.5 break), I multiplied the max and values with two and divided the display value with two (Part 2) and then I got jQuery slider bar with floating value as below.
Then, my goal was to put floating points on the slider bar value display, but the native jQuery slider bar doesn't support the floating point. jQuery always roundup the floating values to the nearest integer. To display the floating point (for example,0.5 break), I multiplied the max and values with two and divided the display value with two (Part 2) and then I got jQuery slider bar with floating value as below.
Thursday, April 10, 2014
New Version of the National Land Cover Database (NLCD 2011) Release :Webinar Announcement
The latest version of the National Land Cover Database (NLCD) for the conterminous United States will be publicly released on April 4, 2014. NLCD 2011 is the most up-to-date and extensive iteration of the National Land Cover Database, the definitive Landsat-based, 30-meter resolution land cover database for the Nation. NLCD 2011 products are completely integrated with those of previous versions (2001, 2006), providing a 10-year record of change for the Nation. Products include 16 classes of land cover, the percent of imperviousness in urban areas, and the percent of tree canopy cover. NLCD is constructed by the 10-member federal interagency Multi-Resolution Land Characteristics (MRLC) Consortium. This seminar will highlight the new features of NLCD 2011 and the related applications.
Friday, February 28, 2014
Convert TRRM Real Time Binary File into ESRI ASCII
Seven simple steps for converting TRMM binary to ASCII grid using MATLAB
Step5:
Step1:
%Open TRMM realtime binary file
trmmFile = fopen('E:\TrmmBinary
Processing\3B42RT.2012.03.27.09z.bin', 'rb');
Step2:
%Move file pointer to the begining of file
frewind(trmmFile);
Step3:
%Read TRMM value from the binary file having 1140 rows and
480 columns
precipitation = fread(trmmFile, [1440,480], 'float32','b');
Step4:
%Shift precipitation by 90 degree to relate data with
equator
precipitation = rot90(precipitation);
%Assign ESRI ASCII GRID HEADER
%After rotaion by 90 degree ncols changed into 1440 from 480
and nrows
%changed into 480 from 1440
Tuesday, February 11, 2014
We will miss the "father of GIS"
Dr. Roger Tomlinson has passed away. Tomlinson is generally recognized as the "father of GIS.” He is the visionary geographer who conceived and developed the first GIS for use by the Canada Land Inventory in the early 1960s. This and continuing contributions led the Canadian government to give him its highest civilian award, the Order of Canada, in 2001. Text for that award reads, “he pioneered its uses worldwide to collect, manage, and manipulate geographical data, changing the face of geography as a discipline.”
Tomlinson tells the story of how this came to be. In the early 1960s he was working as a photo interpreter for Spartan Air Services in Canada. They had a contract to identify the best location for a tree plantation in Kenya. They turned to their young geographer Tomlinson and asked him to develop a methodology. He tried various manual methods for overlaying various environmental, cultural, and economic variables, but all were too costly. He turned to computers and found the solution. Subsequently he sold this approach to the Canada Land Inventory that had the responsibility of using data to assist the government in its land use planning activities. His GIS approach reduced the task from three years and eight million Canadian dollars to several weeks and two million dollars.
He went on to serve the community in many ways. He chaired the International Geographical Union’s GIS Commission for 12 years, where he pioneered the concepts of worldwide geographical data availability. He is a past president of the Canadian Association of Geographers a recipient of its rare Canadian Award for Service to the Profession.
Other awards followed including the James R. Anderson Medal of Honor for Applied Geography (1995) and the Robert T. Aangeenbrug Distinguished Career Award (2005) from the American Association of Geographers. He was the first recipient of the Aangeenbrug award and also the first recipient of ESRI’s Lifetime Achievement Award (1997). National Geographic gave him its rare Alexander Graham Bell Award for exceptional contributions to geographic research (2010). He is an Honorary Fellow of the Royal Geographical Society and the recipient of multiple honorary doctorates – in addition to his own PhD from University College London.
Tomlinson tells the story of how this came to be. In the early 1960s he was working as a photo interpreter for Spartan Air Services in Canada. They had a contract to identify the best location for a tree plantation in Kenya. They turned to their young geographer Tomlinson and asked him to develop a methodology. He tried various manual methods for overlaying various environmental, cultural, and economic variables, but all were too costly. He turned to computers and found the solution. Subsequently he sold this approach to the Canada Land Inventory that had the responsibility of using data to assist the government in its land use planning activities. His GIS approach reduced the task from three years and eight million Canadian dollars to several weeks and two million dollars.
He went on to serve the community in many ways. He chaired the International Geographical Union’s GIS Commission for 12 years, where he pioneered the concepts of worldwide geographical data availability. He is a past president of the Canadian Association of Geographers a recipient of its rare Canadian Award for Service to the Profession.
Other awards followed including the James R. Anderson Medal of Honor for Applied Geography (1995) and the Robert T. Aangeenbrug Distinguished Career Award (2005) from the American Association of Geographers. He was the first recipient of the Aangeenbrug award and also the first recipient of ESRI’s Lifetime Achievement Award (1997). National Geographic gave him its rare Alexander Graham Bell Award for exceptional contributions to geographic research (2010). He is an Honorary Fellow of the Royal Geographical Society and the recipient of multiple honorary doctorates – in addition to his own PhD from University College London.
Call for Proposals, Presentations and Workshops: Free and Open Source Software for Geospatial 2014, Portland, Oregon (FOSS4G 10th Anniversary)
FOSS4G (Free and Open Source Software for Geospatial) is pleased to invite proposals for workshops, papers, and presentations for its 2014 conference to be held in Portland, Oregon, USA from September 8th to 13th.
The annual FOSS4G conference is the largest global gathering for all those currently or potentially working with open source geospatial software. It brings together a mix of developers, users, decision makers and observers from a broad spectrum of organizations and fields of operation for six days of workshops, presentations, discussions, and cooperation.
The annual FOSS4G conference is the largest global gathering for all those currently or potentially working with open source geospatial software. It brings together a mix of developers, users, decision makers and observers from a broad spectrum of organizations and fields of operation for six days of workshops, presentations, discussions, and cooperation.
Conference Dates
Sep 8th-9th: Workshops
Sep 10th-12th: Main Conference
Sep 13th: Code Sprint
For more information or to keep up to date on news from FOSS4G 2014, follow @foss4g on Twitter, subscribe to our announcements list, or contact: foss4g2014-info@osgeo.org.
Monday, December 9, 2013
Call for Papers: 45th Annual South Dakota State Geography Convention
45th Annual South Dakota State Geography Convention March 20-21, 2014 in the Volstorff Ballroom in the South Dakota State University Student Union, Brookings, SD, USA
Student poster and paper abstracts are now being accepted until March 1, 2014!
Please contact: Josh Bucher, Geography Club President, email: joshua.bucher@sdstate.edu
Events
J.R. Smith Memorial Geography Bowl
Thursday: Social at The Ram Pub, Main Street Brookings,SD
Student Poster and Paper Presentations
Friday: Awards Banquet at McCrory Gardens Center & Keynote Speaker; AAG President Julie Winkler
Convention events will begin at 9AM on March 20!
For more information, contact:
Josh Bucher
Geography Club President
joshua.bucher@sdstate.edu
Featured Speakers
* Marc Simard, NASA Jet Propulsion Lab, Pasadena, CA
* John Fraser Hart, University of Minnesota
* John Hudson, Northwestern University
* Derek Alderman, University of Tennessee-Knoxville
* Margaret Pearce, University of Kansas
* Forrest Wilkerson, Minnesota State University-Mankato
* Hilary Hungerford, South Dakota State University
* Lara Prihodko, Geospatial Science Center of Excellence, South Dakota State University
* Gray Tappan, U.S. Geological Survey/EROS Data Center, Sioux Falls, SD
Map: https://mapsengine.google.com/map/edit?mid=zYDrN4TX_sg8.k3DVcGcbjMU0
Student poster and paper abstracts are now being accepted until March 1, 2014!
Please contact: Josh Bucher, Geography Club President, email: joshua.bucher@sdstate.edu
Events
J.R. Smith Memorial Geography Bowl
Thursday: Social at The Ram Pub, Main Street Brookings,SD
Student Poster and Paper Presentations
Friday: Awards Banquet at McCrory Gardens Center & Keynote Speaker; AAG President Julie Winkler
Convention events will begin at 9AM on March 20!
For more information, contact:
Josh Bucher
Geography Club President
joshua.bucher@sdstate.edu
Featured Speakers
* Marc Simard, NASA Jet Propulsion Lab, Pasadena, CA
* John Fraser Hart, University of Minnesota
* John Hudson, Northwestern University
* Derek Alderman, University of Tennessee-Knoxville
* Margaret Pearce, University of Kansas
* Forrest Wilkerson, Minnesota State University-Mankato
* Hilary Hungerford, South Dakota State University
* Lara Prihodko, Geospatial Science Center of Excellence, South Dakota State University
* Gray Tappan, U.S. Geological Survey/EROS Data Center, Sioux Falls, SD
Map: https://mapsengine.google.com/map/edit?mid=zYDrN4TX_sg8.k3DVcGcbjMU0
Friday, November 22, 2013
Top 20 Research Institutes in Remote Sensing
A recent study
conducted by Yanhua
Zhuang et al. (2013) reported the
top 20 research institutes in remote sensing using bibliometric
analysis on publications published during 1991-2010 in the remote sensing field.
Oho, Satellites are making RS research interesting!
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