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Author: GISGeography

We help you learn Geographic Information Systems and remote sensing

4 Weather Data Sources for GIS

Some of the best GIS weather data available can be found at NWS, PRISM, MADIS and Weather Source. This GIS weather data dates back from past to present.

1000 GIS Applications & Uses – How GIS Is Changing the World

From over 50 industries, here are 1000 GIS applications to open your mind of our amazing planet, its interconnectivity with location intelligence in mind.

Python Minimum or Maximum Values in ArcGIS

Python minimum and maximum values in ArcGIS can be obtained from multiple fields. This is done with min and max commands using Python and Field Calculator.

How to Convert NoData to Zero for Rasters in ArcGIS

Changing NoData values to zero in arcGIS can be accomplished by using the “Con Tool”

Image Classification Techniques in Remote Sensing [Infographic]

We look at the image classification techniques in remote sensing (supervised, unsupervised & object-based) to extract features of interest.

Equal Interval Classification in GIS

The equal interval classification method divides attribute values into equal size range taking the data’s minimum and maximum values.

Spectral Signature Cheatsheet in Remote Sensing

Every object has its own unique composition. This is equivalent to it having its own spectral signature. Choose the spectral bands for ideal classification

NAD27 – Meade’s Ranch at the Center of It All

Meade’s Ranch was the focal point of the NAD27 with all positions relative to it. First-order triangulation was used with approximately 26,000 survey points