How To Install python3-pygac on Debian 12
Introduction
In this tutorial we learn how to install python3-pygac on Debian 12.
What is python3-pygac
python3-pygac is:
pygac reads NOAA AVHRR Global Area Coverage (GAC) data, and performs state of the art calibration and navigation.
It must be noted that pygac expects Level 1b file to contain normal GAC header and data records, the format of which are mentioned in the official NOAA POD and KLM Data User Guides. The user should not prepend any other header (e.g. when downloading GAC data from CLASS archive etc) to the L1b file. In the first pre-processing step, pygac determines whether the GAC data comes from the second (i.e. NOAA-14 and before) or the third generation (NOAA-15 and onwards) AVHRR instrument by “pygac-run”. This is done by reading the first three bytes of the data set. If they contain the any of the following values, [“CMS”, “NSS”, “UKM”, “DSS”], then the KLM reader from “gac_klm.py” file is invoked, otherwise the POD reader is invoked (gac_pod.py).
There are three methods to install python3-pygac on Debian 12. We can use apt-get, apt and aptitude. In the following sections we will describe each method. You can choose one of them.
Install python3-pygac Using apt-get
Update apt database with apt-get using the following command.
sudo apt-get update
After updating apt database, We can install python3-pygac using apt-get by running the following command:
sudo apt-get -y install python3-pygac
Install python3-pygac Using apt
Update apt database with apt using the following command.
sudo apt update
After updating apt database, We can install python3-pygac using apt by running the following command:
sudo apt -y install python3-pygac
Install python3-pygac Using aptitude
If you want to follow this method, you might need to install aptitude first since aptitude is usually not installed by default on Debian. Update apt database with aptitude using the following command.
sudo aptitude update
After updating apt database, We can install python3-pygac using aptitude by running the following command:
sudo aptitude -y install python3-pygac
How To Uninstall python3-pygac on Debian 12
To uninstall only the python3-pygac package we can use the following command:
sudo apt-get remove python3-pygac
Uninstall python3-pygac And Its Dependencies
To uninstall python3-pygac and its dependencies that are no longer needed by Debian 12, we can use the command below:
sudo apt-get -y autoremove python3-pygac
Remove python3-pygac Configurations and Data
To remove python3-pygac configuration and data from Debian 12 we can use the following command:
sudo apt-get -y purge python3-pygac
Remove python3-pygac configuration, data, and all of its dependencies
We can use the following command to remove python3-pygac configurations, data and all of its dependencies, we can use the following command:
sudo apt-get -y autoremove --purge python3-pygac
Dependencies
python3-pygac have the following dependencies:
- python3-geotiepoints
- python3-h5py
- python3-pyorbital
- python3-scipy
- python3-bottleneck
- python3-docutils
- python3-numpy
References
Summary
In this tutorial we learn how to install python3-pygac package on Debian 12 using different package management tools: apt, apt-get and aptitude.
