Difference Between GPS and DGPS
GPS: GPS known as Global Positioning System is a collection of number of satellites in the space sending the precise location details in the space back to Earth. Signals are…
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June 17, 2017
How to create a Geographical Heat Map in Excel
Heat Map is quite popular in the GIS world which can be produced in various GIS software, I have written a tutorial on How to Create Heat Map using QGIS…
June 9, 2017
WGS84 Vs NAD83
Hello GIS Grinder, today going to write on differences between WGS84 and NAD83. Both the coordinate system differ in some way, I have listed 10 differences. This minor differences are…
June 6, 2017
A to Z About Active and Passive Remote Sensing
There are two main types of sensors used in remote sensing technology, active sensors and passive sensors. Difference between these two is quite small, however, leaves great impact on their…
May 26, 2017
Vegetation Spectral Signature Cheat Sheet
Almost 70 percentage of the earth surface is covered by the vegetation and it is the first to encounter the energy (sun). Vegetation is important for the earth ecosystem, understanding…
May 16, 2017
Open Source GIS Software List for 3D Map
In GIS world 3D means that has X, Y and Z coordinates. Z coordinate is used to draw height. 3D map helps better understanding of the object, in GIS…
May 9, 2017
Free World Satellite Data & How to Download
Landsat Data: One of the most popular free satellite data is Landsat data. By the effort from NASA and USGS, Landsat 1 was lunched 45 years back (1972) and…
May 2, 2017
Free World DEM Data, 3D in your Computer
Digital Elevation Model (DEM) is a raster image that holds z values, it is used widely during the analysis process where surface height value are important. As everybody is aware…
March 15, 2017
120 Landsat Data Applications, Used in Different Field
1. Africa Content Environmental Change: Landsat data was heavily used to create Africa Environmental change Atlas Map that includes a map of glacier melting, loss of a different kind of…
January 18, 2017
How to Georeference Google Earth Image on SAGA GIS
Google Earth is a popular software to view world satellite image, sometime you might want to add it's image into the SAGA GIS software and overlay few Shapefile or other…
December 18, 2016