normalized burn ratio - Landsat 8
marten
Global Mapper UserTrusted User
I'm trying to calculate NBR with Landsat 8, but only manage to produce a mono-colour output.
Has anyone else tried this succesfully? Is there a tutorial to walk one through this?
thanks,
Marten
Has anyone else tried this succesfully? Is there a tutorial to walk one through this?
thanks,
Marten
Comments
-
The raster calculation function in Global Mapper produces an 'elevation' layer. In other words, it creates a layer that uses one of the preconfigured elevation shaders to visualize the results of the calculation. If the currently selected shader is set to Daylight Shader, it will render a mono-color output. Try setting the shader to Atlas Shader to see if that makes a difference.
- David McKittrick
Senior Applications Specialist
Blue Marble Geographics -
What are the stages of work to NBR normalized burn ratio ( ENVI 4.7) ??? urgent
-
Hello Asma,
Could you clarify your question? Are you simply asking how to do an NBR analysis?
Regards,
Sam Knight
Director of Product Management
Blue Marble Geographics -
hellp samknight,
how to calculate normalized burn ration (envi 4.7) ???? -
asma,
I'm not sure what the reference to ENVI 4.7 means. In Global Mapper, the steps to calculate NBR are as follows:
* Load your source image layer
* From the menu, choose Analysis / Raster Calculator. Depending on what you have loaded already, you may need to select the source layer of the imagery that you want to work on
* In the "Set up Apply Formula Operation" section, select "NBR" from the "Add Predefined Formula" option
* Click on the "Add Band" button
* In the "Set up Output Grid Settings", select whichever option suits your purpose. The NBR formula will create a single band as output, in a new layer.
* Select "OK". You will then be prompted for the bands that represent the input sources, B4 and B^, which represent the near-infrared band and the shortwave infrared band, respectively. Once you've made the selections, click "OK", and you should be on your way.
Hope that this helps,
~Jeff
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