Exporting statistics from Google Analytics to Piwik

Google2Piwik is script written in Python to enable exporting statistics from Google Analytics to Piwik.

Requirements
Access to Piwik Installation.
Google Analytics Account with read or admin rights.
The Google Analytics API currently does not support Google Apps for your Domain Accounts. Thats why you can’t export data from account@yourdomain.com even if you have access via web interface. However you can grant privileges to your Gmail account, and use it to perform the export.
Goggle APIs API key (here you can get one: https://code.google.com/apis/console/)
Python 2.6 with components:
gdata-python-client (Google Python API) – http://code.google.com/p/gdata-python-client/
MySQLdb  (Ubuntu: sudo apt-get install python-mysqldb)
PyQt4 (http://www.riverbankcomputing.co.uk/software/pyqt/download) –gui version only (Ubuntu: sudo apt-get install python-qt4)

Preparation
Before running the script please be sure to:
Prepare google2piwik.conf configuration file – sample in google2piwik.conf.sample
If you don’t know your site table_id, type: python google2piwik.py -p (remember to fill google login and pass configuration before)
Check if configuration file is acceptable and all rights are present (./google2piwik.py -c)
Create backup of your Piwik MySQL Database
Set the timezone in Piwik for the site where you import data to UTC

Run the export:  ./google2piwik.py

After export
After successful export, please go to your Piwik installation folder and run: /usr/bin/php5 /path/to/piwik/misc/cron/archive.php — url=http://example.org/piwik/

Limitations
Unfortunately because of lack of full access to data, some statistics may be different from presented in Google Analytics.
Known not trustworthy statistics:
Visitors -> Visitor Log statistics are not reliable. This one is generated semi-randomly to supply informations about Actions (Pageviews, Bouncy Rate etc.)
Sometimes page Bouncy Rate and Average time on page is slightly different from Google Analytics
Visits Providers are unknown (because Google doesn’t supply such informations)
Actions -> Unique Pageviews
Visitors -> Settings -> Plugins Google provides only informations about Flash Player and Java enabled.

Because of Google API Policy, there is a limit of requests per 24 hours. Exporter uses google API quota (50k requests/day). Currently this script is using 6 requests (fetching 10 000 data rows) for one exported day, plus 3 for whole period. One additional request (6th) has been added to populate visit numbers and days since last visit tables. It slowed a bit whole process of export. However number of requests depends on number of visits and total number of pageviews. This means that you should be able to export about 2000 days per 24h in low and medium visited sites.

Running GUI
$ cd Google2Piwik $ python google2piwikgui.py
Building binaries
Make sure you have all the requirements, including PyQt4
Get pyinstaller (http://www.pyinstaller.org/)
Run: $ python /path/to/pyinstaller/Configure.py $ python /path/to/pyinstaller/Makespec.py –onefile Google2Piwik/google2piwikgui.py $ python /path/to/pyinstaller/Build.py google2piwikgui.spec
Copy Google2Piwik/lib/* to dist/lib/

License
http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later