[Qgis-user] Asking for NDVI_Landsat 8

[Szabo Szilard]

Dear Mariana,

If You have the tif files, you do not have to merge the bands, you just
only need these files. Otherwise, maybe (if the images do not have 8 bit
format, but you will see when DDVI values will have non-regular values,
i.e. outside the -1-+1 range) you have to apply an atmospheric correction
(I had to ...) with the TOA plugin in QGIS. In this case you need the *.met
file for the correction, too.

Kind regards,
Szilard


2014-06-18 19:43 GMT+02:00 Mariana Buzzi <marianabuzzi86 at gmail.com>:

> Dear QGIS users,
>
> I wanted to consult on the calculation of NDVI with Landsat 8. I Download
> a USGS Landsat image 8, so I have all the bands that make up the image. The
> question is: should I perform a "merge" with the bands 4 and 5 and then
> calculate the NDVI with the raster calculator? How should I do it?
>
> Of course, thank you very much!
>
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