How to calculate normalized burn ratio (NBR) in QGIS
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- Опубликовано: 8 сен 2024
- In this tutorial I am going to show you how to calculate NBR which in later help in calculation burn area in QGIS.
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There is a cloud cover on the Landsat 8 image, does it affect calculated NBR and dNBR values?
Thanks for the explanation,
May i ask something, How to validate fire data in 2019, while now there are no more traces of fire in the field?
Thank you
I didn't do it yet sir.
I'm unable to install ArcMap, do you have any videos about apps with analogical functions?
why you classify with arcgis and not qgis?
I use macos and when I try to do calculating or DOS1 calculation, the bar isn't going, qgis start lagging, and I was waiting 2 hours but nothing happened(macbook pro m1 16 gb memory)
can You post a video NBR ratio for the sentinel-2A data set. I am having a few confusion regarding TOA correction in the data set (Pre-processing ) using SCP (Semi-automatic classification plugin), it is studied that Sentinel-2A data already TOA corrected?
@@ExploreRSGISTutorials
un-spider.org/advisory-support/recommended-practices/recommended-practice-burn-severity/Step-by-Step/QGIS-sentinel2
have a look at this article. they provide all the preprocessing steps on sentinel data.
@@shekharsaini7872 Thanks for sharing sir. I also find the info here: sentinel.esa.int/web/sentinel/user-guides/sentinel-2-msi/processing-levels/level-2
and sentinel.esa.int/web/sentinel/user-guides/sentinel-2-msi/processing-levels/level-1
In unspider they use S2A MSI level 1C data.
@@ExploreRSGISTutorials Sentinel 2A is alro derived from Level 1C data so, no processing is required.
S2A MSI level 1C data is radiometric corrected, no need for preprocessing.
how do you download the two landsat that is the pre and the post using the same footprint
If you know the date of the incident then you can search the image by using date filter option from usgs earth explorer website
can you do the same calculation of area on sentinel 2A (count*(10*10)/1000000
If your projection unit is a meter then you can do so to find the area in KM^2. Here above data are projected in WGS 84 / UTM zone 18N which unit is meter
Como puedo medir el area afectada segun grado de severidad??
En el minuto 31:39 de este video, mostré cómo se puede calcular el área afectada a partir del valor de la celda.
@@ExploreRSGISTutorials gracias, lo pude hacer en Qgis igual al final.
Please download this from usgs earth explorer :LC08_L1TP_001085_20170108_20170311_01_T1
LC08_L1TP_001085_20170225_20170316_01_T1
for shapefile :mega.nz/folder/pWIS2DQS#tj9YBJoJrtKYeOG93n35Aw
This video is quite useful really, but arcGIS developers blocked russians, so idk how to finish it(
Why you do not use QGIS ?? which is free..
@@ExploreRSGISTutorials in this video u switched to arcmap prog, i got no idea how to do the same in q-gis😂
I'm not strong at GIS & etc. need it for my school project
I need to create a map of burned territory