Leveraging NDVI to calculate other indices in Image Analysis window | ArcGIS Blog

The NDVI (Normalized Difference Vegetation Index) tool in the Image Analysis Window calculates how vigorous the vegetation is in an area. But it’s not the only index available, although it may be the most widely used.

When indices have the same format as NDVI, which is to say (Band X – Band Y)/(Band X + Band Y) you can substitute any of the bands and the tool will still work. For example, to calculate the Normalized Difference Built-up Index (NDBI), select the near infrared and the shortwave infrared bands. For Landsat 7, band 4 is near infrared and band 5 is shortwave infrared. For Landsat 8, band 5 and 6 showed the most contrast (in a limited observation of Landsat 8 here at Redlands). Choose the appropriate bands and click the NDVI button, and your output will be the NDBI. NDBI is great for showing impervious surfaces and is really useful for detecting the growth of cities.

See it on Scoop.it, via Geoprocessing

from Geoprocessing | Scoop.it http://ift.tt/KtHOL1

via IFTTT

Between the Poles: Expanding role for geospatial data and technology in the utility sector in BRICS countries

The BRICS countries (Brazil, Russia, India, China, and South Africa) are geographically, culturally and economically diverse, but have one common point on their agenda — the rapid development of the energy industry as a national priority.

See it on Scoop.it, via Geoprocessing

from Geoprocessing | Scoop.it http://ift.tt/KrHxZa

via IFTTT

Brasil está entre os países que mais utilizam drones

Veículos aéreos não tripulados são usados em missões de vigilância terrestre e marítima de fronteiras, além [...]

See it on Scoop.it, via Geoprocessing

from Geoprocessing | Scoop.it http://ift.tt/1bh2lNP

via IFTTT

Melbourne Heat Wave and Energy Demand: SimCLIM for ArcGIS/Climate Applied

Posted on behalf of Dr. Peter Urich, Managing Director of CLIMsystems Ltd., Hamilton, New Zealand

Recently, CLIMsystems Ltd.

See it on Scoop.it, via Geoprocessing

from Geoprocessing | Scoop.it http://ift.tt/1azkliJ

via IFTTT

POTENCIAL DO WEBSIG PARA DIVULGAÇÃO DE DADOS ESPACIAIS DA PENÍNSULA POTTER, ANTÁRTICA MARÍTIMA

See it on Scoop.it, via Geoprocessing

from Geoprocessing | Scoop.it http://ift.tt/1bh2lgR

via IFTTT

ArcPy Quick Tip: Find Unique Values in a Field Using the Python Window in ArcMap

Arcpy Search Cursors can be used in ArcMap to retrieve a list of unique values for a field in a feature class. You can retrieve a list of unique values by following the steps below*:Open the Python...

See it on Scoop.it, via Geoprocessing

from Geoprocessing | Scoop.it http://www.scoop.it/t/geoprocessamento/p/4014320044/2014/01/16/arcpy-quick-tip-find-unique-values-in-a-field-using-the-python-window-in-arcmap

via IFTTT

Using Facebook photos in the hosted map tour story map

The map tour story map is a popular hosted template, and you can add photos to your tour from a variety of online locations. One of the locations is Facebook. Here’s how you can use your own Facebook photos, or photos publicly shared by others.

See it on Scoop.it, via Geoprocessing

from Geoprocessing | Scoop.it http://ift.tt/1dV8HQ2

via IFTTT