Questions[gis](ubuntu)

I am trying to use python2 bindings for gdal on Ubuntu 20.04 LTS, which does not have the python-gdal package in it's repository, to run an old python2 application.

I tried to download and install it from Ubuntu 18.04 LTS repository:

sudo wget -c http://archive.ubuntu.com/ubuntu/pool/universe/g/gdal/python-gdal_2.2.3+dfsg-2_amd64.deb

sudo apt install ./python-gdal_2.2.3+dfsg-2_amd64.deb

But got the error:

The following packages have unmet dependencies. python-gdal : Depends: gdal-abi-2-2-3 but it is not installable Depends: libgdal20 (>= 2.2.2) but it is not installable E: Unable to correct problems, you have held broken packages.

I also run sudo apt-get dist-upgrade and apt-cache policy python-gdal libgdal20 with output:

python-gdal: Installed: (none) Candidate: (none) Version table: libgdal20: Installed: (none) Candidate: (none) Version table:

Is there any way to use python-gdal without conflicts to run the app on Ubuntu 20?

The official QGIS installation documentation is a little hard to follow, because it doesn't give a detailed example.

@zorkerz provided an answer to my installation question for Ubuntu 15.04. I modified these instructions to 18.04. Is my interpretation correct?

To install the newest version of QGIS, add the QGIS repositories to the /etc/apt/sources.list file:

sudo nano /etc/apt/sources.list

Arrow the cursor to the bottom and insert these lines:

deb http://qgis.org/ubuntu bionic main
deb-src http://qgis.org/ubuntu bionic main

After those commands, I followed the rest of the instructions on the official QGIS installation page starting with the following.

"After that type the commands below to install QGIS:"

sudo apt update
sudo apt install qgis qgis-plugin-grass

While completing the step to verify the fingerprint, the following part of the output seemed off:

gpg: key 51F523511C7028C3: 1 signature not checked due to a missing key gpg: key 51F523511C7028C3: "QGIS Archive Automatic Signing Key (2019) " not changed gpg: Total number processed: 1 gpg: unchanged: 1

When adding the key, the following part of the output was concerning. Is this a problem on my end or for QGIS to resolve?

gpg: key 51F523511C7028C3: 1 signature not checked due to a missing key

I have some software programmed in R using sf package, which require GDAL version >= 2.0.0.

But Ubuntu Xenial 16.04 LTS has only 1.11.3+dfsg-3build2.

How can I get GDAL version >= 2.0.0 on 16.04 LTS?

I'm trying to get the coordinates of regions in New Zealand, and have downloaded a gpkg file from http://www.gadm.org/country (options: Country: New Zealand, File format: Geopackage (SpatiaLite)) but am unable to open the file, and am unable to find anything online that points me in the right direction.

I'm hoping someone on here is able to help me out?