AtlasPrint: QGIS Server Plugin to export PDF from composer with atlas capabilities

Description

This plugin adds a new request to QGIS 3 Server getprintatlas which allows to export a print composer with an atlas configured, but passing an expression parameter to choose which feature is the current atlas feature.

Installation

We assume you have a fully functional QGIS Server with Xvfb. See the QGIS3 documentation.

We need to download the plugin, and tell QGIS Server where the plugins are stored, then reload the web server. For example on Debian:

# Create needed directory to store plugins
mkdir -p /srv/qgis/plugins

# Get last version
cd /srv/qgis/plugins
wget "https://github.com/3liz/qgis-atlasprint/archive/master.zip"
unzip master.zip
mv qgis-atlasprint-master atlasprint

# Make sure correct environment variables are set in your web server configuration
# for example in Apache2 with mod_fcgid
nano /etc/apache2/mods-available/fcgid.conf
FcgidInitialEnv QGIS_PLUGINPATH "/srv/qgis/plugins/"

# Reload server, for example with Apache2
service apache2 reload

You can now test your installation.

API

This plugin adds some new requests to the WMS service:

• REQUEST=GetCapabilitiesAtlas: Return the plugin version
• REQUEST=GetPrintAtlas
  • TEMPLATE: required, name of the layout to use.
  • EXP_FILTER: required, (in some case must be urlencoded). For example, to request fid=12, use &EXP_FILTER=fid%3D12.
  • MAP: QGIS Server can have the project information from different sources.
• REQUEST=GetReport
  • TEMPLATE: required, name of the report to use.
  • MAP: QGIS Server can have the project information from different sources.

Note: For QGIS a report is the same as an atlas. Atlases and reports share the name space, so doing REQUEST=GetPrintAtlas&TEMPLATE=demo&EXP_FILTER="" is equivalent to REQUEST=GetReport&TEMPLATE=demo