Mike's Wiki

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======= Installing QGIS =======

The following are instructions on installing and starting QGIS on Ubuntu/Mint22.

===== Installing Qgis =====

The following are instructions for Installing QGIS on Ubuntu/Mint and then loading Census Data

  - apt update
  - As user root: apt install qgis (this installed 3.22  which is a long term support version)

===== Starting QGIS =====

On Linux, if you are ssh-ing into a server, make sure to specify the “-XY” arguments. This will allow X-windows to re-route to your local machine.
<code>ssh -XY -l <user> <host>
qgis
</code>

===== Plugins =====

=== qgis2web and QuickMap Service ===

  - Menu --> Plugins --> Manage and Install Plugins
  - Search for qgis2web
  - Click "Install Plugin"
  - Search quickmap and choose quickmapservices
  - Click "Install Plugin"

===== Configuring QGIS to accept URL Arguments =====

Change the following at the top of qgis2web.js


<code>
function getParam(name) {
    const urlParams = new URLSearchParams(window.location.search);
    return urlParams.get(name);
}

let lat = parseFloat(getParam("lat")) || 44.8;
let lon = parseFloat(getParam("lon")) || -103.4;
let zoom = parseInt(getParam("zoom")) || 4;
</code>

===== Users =====
I'm going to use a user called "qgis" to own all files.

<code>
useradd -g developer -s /bin/bash -c 'Qgis Account' qgis 
mkdir -p /opt/qgis
chown -R qgis:developer /opt/qgis
</code>