[Qgis-user] To Insert in QGIS Desktop v.3.28.15 a Plugin to read and convert satellite data- AVHRR L1B LAC 1km from NOAA-9, as available from NOAA CLASS website satellite

[Johannes Kröger (WhereGroup)]

Dear Dr. Amal Kar,

that looks like the output of a LLM and should be treated accordingly 
with suspicion.

The "gdal_translate -of GTiff input_noaa9_file output_filename.tif" line 
is for a shell or terminal. You can try it in the OSGeo4W Shell.

Best share a link to one of the source files in the exact data and file 
format you want to read. Otherwise other people can only guess.

Cheers, Hannes

On 8/29/26 18:42, Amal Kar via QGIS-User wrote:
> Dear Sir,
> I have to read and convert in my QGIS Desktop (v.3.28.15) a large 
> number of old AVHRR LAC (Advanced Very High Resolution Radiometer, 
> Local Area Coverage) data in 1-km pixel that i downloaded from 
> NOAA-CLASS website (https://www.class.noaa.gov/).
> The data is not automatically read by QGIS (in my v.3.28.15 version or 
> in the latest version that i also tried). The plugin that enables QGIS 
> to read the files is a python script.
> I learn from Google Search the following:
>  " *Troubleshooting & Format Conversion*
>
> If your specific file does not render immediately due to missing 
> header extensions or metadata formatting from the NOAA CLASS Archive 
> <https://www.class.noaa.gov/>, you can force GDAL to translate it via 
> the built-in QGIS processing tools:
>
> ·*Use the Command Line:* Open the *OSGeo4W Shell* (Windows) or 
> Terminal (Mac/Linux) and run the following command to convert it to a 
> standard GeoTIFF format:
>
> bash
>
> gdal_translate -of GTiff input_noaa9_file output_filename.tif
>
> ·*Use QGIS UI:*Go to *Raster* > *Conversion* > *Translate (Convert 
> Format)...*, choose your input file, select *GeoTIFF* as the output 
> format, and run the process."
>
>
> Unfortunately, I do not know how to add the above python script in 
> GDAL and make QGIS read the files automatically as and when these are 
> mentioned in the "GDAL>Raster conversion" tool of QGIS (either as a 
> single file or as batch files).
> It will be immensely helpful if you kindly add the script to QGIS to 
> permanently allow this beautiful user-friendly GIS software to read 
> and convert the NOAA-9 AVHRR L1B LAC data from the NOAA CLASS website. 
> Their website is not providing any help. Initially it automatically 
> diverted the request to an "Expert" and then became silent; presently 
> it does not accept any request.
> The AVHRR daily LAC data at 1 km pixel from 1981 onwards is immensely 
> helpful for time-series analysis of environmental changes, when 
> compared with the daily MODIS data at 1 km pixel that is available 
> from year 2000. Your kind help in inserting the python script in our 
> QGIS will immensely help in reading and analysing the old AVHRR LAC 
> satellite data in comparison to the present MODIS satellite data.
> With Kind Regards,
> Amal Kar.
> -- 
> Dr. Amal Kar
> Former Principal Scientist and Head, Division of Natural Resources & 
> Environment,
> Central Arid Zone Research Institute, Jodhpur 342003, India
> A-1/6, Baitalik Housing Society, KMDA Housing Complex,
> Baghajatin (Near Hiland Park),
> KOLKATA 700 094, India
> Email: akarcaz50 at gmail.com
>
>
>
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