GeoDa Free GIS Software

What is GeoDa: GeoDa provides analysis of various data formats like shapefile, GeoJSON, KML, SQLite and table format (CSV, XLS and DBF).

Image by Pexels from Pixabay

How it is related to GIS: It provides Geo-visualization, user can perform certain spatial analysis.
Good things about GeoDa: GeoDa is an Open Source software, Along with Spatial analysis, simpler & complex statistical data analysis performed in excel (charting, graphing) can be performed in GeoDa.
Most suited for: It is most suitable for Students, Researchers.
Downloadable link: http://geoda.software.informer.com/1.8/

imagesource:GitHub

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GDAL & OGR (Importance & Installation)

GDAL & OGR libraries allow you to perform various GIS operations like, Flow Direction or working with DEM few raster & vector analysis outside GIS environment. Image by Gerd Altmann from Pixabay What Knowledge one should have : Basic Programming, Python What software you need : Python IDLE or command line, GDAL libraries files (explained later) Installation : 1- Once you have Python installed. 2- Start python IDLE to check which version of python you are using available at top as shown Python IDLE 3- Install two files available at link below based on your version of python. Download Link : http://www.gisinternals.com/query.html?content=filelist&file=release-1500-gdal-2-1-2-mapserver-7-0-2.zip Install first : gdal-201-1500-core.msi and then: GDAL-2.1.2.win32-py2.7.msi * Note specify the path C:\Python27\ArcGIS10.3\Lib\site-packages\ for GDAL-2.1.2.win32-py3.2....

Working With Raster Calculator In ArcMap

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“Rule Based Classification” using eCognition

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Learning Object Based Classification Using eCognition

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What is Radiometric Resolution Of Satellite Image

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Generating Contours From DEM In ArcMap

Contours are a useful way to visualize topography and to create a map that can be printed in black and white, or that mimics the standard USGS topo maps. Image by TheAndrasBarta from Pixabay What you need: DEM data of your Area. Extract your area from online freely available DEM and select Spatial Analyst Tools -> Surface -> Contour. Select the inputs as follows, with a 100m or 50m contour interval: since 10 m might take time. and click OK. Contour tool in ArcMap Output may be some thing like depending on color scheme. Go to properties and label elevation values for a good visualization. Image source: en.wikipedia.org

Climate Change Not Myth But Reality

Northern Areas of Pakistan are blessed with beauty, we often hear people quoting these beautiful areas as “Switzerland of Pakistan”, “Heaven on Earth”, but these words proved there reality when for the first time I visited Northern Pakistan. It is worth mentioning that Pakistan is dependent on frozen hydrological resources. Many rivers such as River Swat, Chitral, Gilgit, Hunza, Shigar, Shyok, Indus, Shingo, Astor, and Jhelum are fed by runoff generated by melting of SC of Northern areas. Image by Aqsa kamran from Pixabay Image by Abdullah Shakoor2 from Pixabay This runoff supports agriculture . Agriculture of Pakistan is largely dependent on the snow melting phenomenon. Anomalies witnessed in glaciers and their melting patterns will have massive impact on hydrological resources because the country’s 70% of fresh water depends upon these frozen hydrological resources in the high mountains of Himalaya and Hindu Ku...

How To View Satellite Image In ArcMap

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OBJECT-BASED BUILDINGS DETECTION & CHANGE ANALYSIS USING MULTI TEMPORAL HIGH RESOLUTION REMOTE SENSING DATA

With urbanization and urban sprawl, land-use and land-cover change studies became an area of keen interest for researchers. Cause of rapid urbanization is peoples’ responses to economic opportunities, and government policies. New housing societies and business model adopted overall globe has provided opportunities for new land uses . Image by piviso from Pixabay “Image Classification is the process of sorting pixels into a finite number of individual classes, categories of data based on their DN (Digital Number) values”. With advent of modern high resolution era of satellite images, PIXEL based, Object based and many other machine learning algorithms have been developed. Currently the prospects of a new classification concept, Object-Based Classification , are being investigated. Recent studies have proven the accuracy of object-based classification over traditional classifiers. The object-based classification approach relies on basic...

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