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Visualization API

Project description

Develop Master

EEA App Visualization is the Core API for EEA Daviz. This package was added in order to be able to use EEA Google Charts without EEA Exhibit and viceversa or any other visualization library as a standalone visualization or as part of a bundle package (eea.daviz)

This package as standalone is just an API, you have to either install eea.daviz bundle, either install one of the available visualization libraries (eea.exhibit, eea.googlecharts, etc) in order to have a working Visualization Tool for your files.


If you are using zc.buildout and the plone.recipe.zope2instance recipe to manage your project, you can do this:

  • Update your buildout.cfg file:

    • Add to the list of eggs to install
    • Tell the plone.recipe.zope2instance recipe to install a ZCML slug
    recipe = plone.recipe.zope2instance
    eggs =
    zcml =
  • Re-run buildout, e.g. with

    $ ./bin/buildout

You can skip the ZCML slug if you are going to explicitly include the package from another package’s configure.zcml file.


  • python-dateutil
  • plone.i18n
  • Zope >= 2.12
  • eea.jquery
  • collective.js.jqueryui < 1.9 (Plone 4.0, 4.1, 4.2)
  • collective.js.jqueryui > 1.9 (Plone 4.3+)
  • eea.cache > 7.0 (optional)

Source code

Latest source code (Zope 2 compatible): - Plone Collective on Github - EEA on Github


EEA - European Environment Agency (EU)


12.5 - (2020-08-24)

  • Change: daviz view tabs design tweaks [ichim-david refs #119540]

12.4 - (2020-02-28)

  • Change: use prop instead of attr when setting value on input tags for jquery 1.9+ compatibility [ichim-david refs #105112]

12.3 - (2019-10-02)

  • Change: Added new resource for david view [iulianpetchesi refs #107671]

12.2 - (2019-01-28)

  • Jenkins: Add sonarqube step [avoinea refs #101552]

12.1 - (2018-09-07)

  • Cleanup: Remove backward-compatible is_exhibit property [avoinea refs #98283]

12.0 - (2018-07-27)

  • Bug fix: Don’t try to scale if image is already cached in browser, just return 304 with empty string [szabozo0 refs #97222]

11.9 - (2018-06-20)

  • Change: updated URLs pointing to with https:// [alecghica refs #95849]

11.8 - (2018-03-14)

  • Change: load customized collective.js.jqueryui on eea context for view pages [ichim-david refs #91577]

11.7 - (2017-12-12)

  • Change: Replace eeacms/zptlint with eeacms/plone-test:4 zptlint [avoinea refs #90415]

11.6 - (2017-11-07)

  • Change: Remove Sphinx generated documentation [petchesi-iulian refs #88212]

11.5 - (2017-08-16)

  • Bug fix: added missing glyphicons-halflings.png to correct path [zoltan_andras refs #84486]

11.4 - (2017-05-22)

  • Change: fixed PyLint warnings and errors [valipod refs #84949]

11.3 - (2017-05-15)

  • Change: fixed PyLint warnings and errors [eduard-fironda refs #84949]

11.2 - (2017-04-24)

  • Change: updated package information [eduard-fironda]

11.1 - (2017-01-17)

  • Bug fix: Move zope.formlib to extra_require [avoinea]

11.0 - (2017-01-17)

  • Bug fix: Add missing dependency to zope.formlib [avoinea]

10.9 - (2016-12-28)

  • Change: Add more info on JSON UnicodeDecodeError [voineali refs #79895]

10.8 - (2016-12-19)

  • Change: Replace misused logger.exception with logger.warn [voineali refs #75388]

10.7 - (2016-10-10)

  • Bug fix: accept % and # in id of columns as some charts need to have these characters [ichim-david refs #75896]

10.6 - (2016-09-26)

  • Bug fix: Fixed profiles version [avoinea]

10.5 - (2016-05-19)

  • Bug fix: Fix pylint warnings [chiridra refs #71940]

10.4 - (2016-05-04)

  • Feature: html body field for daviz and gis application - added new field “body” - modified the view template [chiridra refs #70146]

10.3 - (2016-03-14)

  • Bugfix: Fixed order of column labels when labels are numbers [szabozo0 refs #69360]

10.2 - (2016-02-15)

  • Task: Improve DaViz Filter design/display clean up unused CSS rule. [chiridra refs #31309]
  • Bug: DaViz: Color picker missing in GC add en language on google.api to fix daviz color picker [lucas refs #68198]

10.1 - (2016-02-03)

  • Task: Improve DaViz Filter design/display [chiridra refs #31309]

10.0 - (2015-10-05)

  • Change: check if DavizEdit.Events exists before overriding it withing js files in case DavizEdit isn’t found and is constructed [ichimdav refs #27220]
  • Bug fix: use evnetlet to prevent hanging out connection [lucas refs #29063]

9.9 - (2015-08-18)

  • Bug fix: fixed data format popup which was hidden by the data cells [ichimdav refs #27889]
  • Bug fix: Auto-include zcml within plone context in order to make this package work without having to add it within buildout zcml directive. [avoinea]

9.8 - (2015-07-06)

  • Change: daviz-edit.css uses content-box box-sizing property since Google charts styles doesn’t cope with border-box. This allows us to use newer versions of Bootstrap which contains box-sizing [ichimdav refs #25986]
  • Bug fix: Always use https protocol for [szabozo0]

9.7 - (2015-06-03)

  • Bug fix: fixed unicode error when guessing columns type [ghicaale refs #26068]

9.6 - (2015-06-02)

  • Bug fix: fixed image viewing of preview images when they are referenced by the fullview [ichimdav refs #25835]
  • Change: year and date types now have an lower and upper bounds of 1500-2500. This loosens the previous restriction of 1900-2200 for valid year values [ichimdav refs #25502]

9.5 - (2015-05-15)

  • Bugfix: Removed default data provenance for blobs [szabozo0 #25341]

9.4 - (2015-05-05)

  • Bug fix: condition chart-tabs for existance. This way we avoid a js error when no charts are added. [ichimdav refs #22901]
  • Cleanup: Removed fallback images from ZODB [voineali refs #24901]

9.3 - (2015-03-17)

  • Change: Switched to curl in the jenkins builds install script [olimpiurob refs #22402]
  • Change: Changed fetch url for jenkins builds install script to the install script from the main EEA CPB repository [olimpiurob refs #22402]

9.2 - (2015-02-03)

  • Bug fix: Optimize edit form by not calling editform 3 times only to tal condition [avoinea]

9.1 - (2014-12-23)

  • Change: Fixed tests for xml download [szabozo0]

9.0 - (2014-11-24)

  • Bug fix: Removed hard dependency to Products.EEAContentTypes [voineali thanks to Nuno Zimas]

8.9 - (2014-11-20)

  • Feature: added belowcontenttitle.documentbyline viewlet to be visible under “Edit Visualizations” tab [ghicaale refs #21457]

8.8 - (2014-08-27)

  • Change: Cleanup memcache invalidation code as it’s already handled by eea.cache (7.0+) [voineali refs #20678]

8.7 - (2014-06-06)

  • Change: Moved tutorials to eea.daviz [szabozo0]

8.6 - (2014-05-15)

  • Bug fix: Increase the sample file data to 4096 due to csv sniffer unable to properly guess the csv dialect from a sample data of 2048 characters. [olimpiurob refs #19732]

8.5 - (2014-05-13)

  • Bug fix: Added delimiter restrictions to CSV dialect detection. Valid CSV delimiters are: {tab}, {space}, ;, ,, : [olimpiurob refs #19535]
  • Feature: Added test for missing values in json boolean fields and downloading as tsv [olimpiurob refs #19206]
  • Change: Use null for missing values in boolean fields when downloading csv,tsv and json [olimpiurob refs #19206]
  • Feature: Add InternalData utility that recognize and internal URL and bypass security (if needed) in order to get visualization data [voineali refs #19075]

8.4 - (2014-04-29)

  • Bug fix: Fix date and year column converters by skipping missing values instead of converting them to current year/date [voineali fixes #19235]
  • Change: WebDav lock object when a visualization is edited (edit visualization) [voineali refs #19172]
  • Change: Added possibility to hide rename option on spreadsheet, Added warning on rename on the Data settings [szabozo0 refs #19149]
  • Feature: Added screencasts tutorial page [szabozo0 refs #18400]

8.3 - (2014-03-10)

  • Fixed version in metadata.xml [szabozo0]

8.2 - (2014-02-03)

  • Feature: Use FontAwesome icons on Data Settings and Exhibit facets configuration [batradav refs #17861]

8.1 - (2014-01-22)

  • Bug fix: Fix big header on “Edit Visualisations” [soniaand refs #17970]
  • Feature: adding Sphinx-generated documentation in Page Template format [batradav refs #9502]
  • Bug fix: Updated old URLs pointing Trac [ghicaale refs #18003]

8.0 - (2014-01-14)

  • Bugfix: Fixed adding data from URL [szabozo0]

7.9 - (2013-11-20)

  • Feature: Allow query in the url after the hash with the chart id [szabozo0 refs #17066]

7.8 - (2013-10-24)

  • Bug fix: Fixed modal’s close button ui issues [tiberich #16928]

7.7 - (2013-09-19)

  • Change: Removed eea.jquery.js from jsregistry as it’s no more required in Plone 4.3

7.6 - (2013-09-10)

  • Bugfix: Increased max_length for column names; Added migration step [szabozo0 refs #16684]

7.5 - (2013-06-17)

  • Feature: Package localization enhanced [lepri]
  • Feature: Changed data provenance to allow multiple data provenances [szabozo0 #9561]

7.4 - (2013-05-20)

  • Bug fix: Added CSV UnicodeWriter as by default python csv module doesn’t know how to write unicode (see [voineali refs #14360]
  • Feature: Also support content-type=’text/html’ as some external JSON/TSV external URLs doesn’t correctly set response headers [voineali refs #14360]
  • Feature: Removed lovely.memcached dependency [voineali refs #14343]

7.3 - (2013-04-17)

  • Bug fix: Redirect to daviz-edit.html only when users add new visualizations [avoinea]
  • Bug fix: Wrap visualization info and download section within daviz-view.html with a div container in order to easily customize theme these sections [avoinea]

7.2 - (2013-03-18)

  • Bug fix: Remove collective.js.jqueryui < 1.9 pin as it make this package unusable with Plone 4.3+ [avoinea]

7.1 - (2013-03-15)

  • Change: Moved eea.exhibit specific code to eea.exhibit package and added API to easily insert HTML code within daviz-view.html head element. See IVisualizationViewHeader [voineali refs #14003]
  • Feature: Support all Simile Exhibit facets [voineali refs #10007]

7.0 - (2013-02-25)

  • Feature: added information for contributors [ciobabog refs #13892]
  • Upgrade step: Within “Plone > Site setup > Add-ons” click on upgrade button available for
  • Feature: Possibility to disable daviz views per Content-Type. See Site Setup > Daviz Visualization > Enable / Disable [voineali]
  • Change: Refactoring ZCML slugs for daviz:view and daviz:edit. See for examples. [voineali]
  • Change: Refactoring “Data settings” as a daviz:view in order to easily disable it if necessary [voineali]
  • Change: Use jQuery tabs for “Daviz Visualization Settings” within Plone ControlPanel [voineali]
  • Bug fix: Fix “embed” and “export to png” buttons CSS [voineali]
  • Bug fix: Improved CSV dialect detection for files with a lot of missing values [voineali fixes #13851]
  • Bug fix: Fixed daviz.json for uploaded files (.tsv, .csv) [voineali]
  • Feature: Upgraded to Simile Exhibit 3.0 [voineali refs #13807]

6.5 - (2013-02-04)

  • Feature: Handling specific annotations for data values [voineali refs #9558]

6.4 - (2013-01-18)

  • Bug fix: Fixed fix_column_labels upgrade step from version 6.2 [szabozo0]
  • Bug fix: Fixed table layout [szabozo0]

6.3 - (2013-01-15)

  • Feature: Added italian translations [simahawk]

6.2 - (2013-01-10)

  • Upgrade step: Within “Plone > Site setup > Add-ons” click on upgrade button available for
  • Change: Moved data annotations to Daviz settings Control Panel [voineali refs #9558]
  • Change: Cleanup old ‘sections’ code [avoinea]
  • Feature: Added confirm dialog in order to prevent accidentally disable of visualizations [voineali refs #9572]
  • Feature: Support non-ASCII datasets (column headers and body) [voineali refs #9610, #10168]
  • Bug fix: Fixed download.(csv, tsv, html) methods for non-ASCII data [voineali refs #9610, #10168]
  • Change: Move column label settings from facet annotations directly to JSON [voineali refs $9610]
  • Feature: On saving a chart, copy the generic chart image in the visualization [szabozo0 refs #10019]
  • Change: Added a common.js and common.css in order to reuse common components [voineali refs #9610]
  • Bug fix: add namespace declaration for exhibit (makes Chameleon happy) [simahawk]

6.1 - (2012-11-09)

  • Feature: Added i18n translations [avoinea]
  • Feature: Display image when javascript is disabled [szabozo0 refs #9562]
  • Upgrade step: Within “Plone > Site setup > Add-ons” click on upgrade button available for
  • Feature: Added utilities to get and convert external URL to data ready for visualization [voineali refs #9576]
  • Feature: Added “year” column type in order to format dates columns as years [voineali refs #9583]
  • Change: Use SlickGrid jQuery plug-in to manipulate data table within Edit Visualization > Data settings Tab [avoinea refs #5599, #5625]
  • Bugfix: Fixed KSS issues in daviz controlpanel [szabozo0 refs #5616]
  • Feature: Made plone collection as daviz data source [avoinea refs #5604]
  • Bug fix: Fixed ‘Enable View’ button CSS [avoinea]

6.0 - (2012-10-08)

  • Upgrade step: Within “Plone > Site setup > Add-ons” click on upgrade button available for
  • Feature: Added API for Visualization data source provenance [voineali refs #5490]
  • Change: Merged daviz-view.json and daviz-relateditems.json into one single json file called daviz.json [voineali refs #5449]
  • Bug fix: fixed visualisation tabs layout when many tabs spanning several rows are made. [demarant]
  • Feature: migrate daviz settings from portal_properties to portal_daviz [szabozo0]
  • Bug fix: Fixed columnTypes in table header using :type syntax [voineali refs #5511]
  • Change: Added IVisualizationData and IVisualizationJson adapters API in order to dynamically provide data sources for visualization [voineali refs #5511]
  • Bug fix: Allow changing of column types within Edit Visualization > Data settings if data source is copy & pasted [voineali refs #5511]
  • Feature: Added an easy way to register Google Maps key when using without Plone by adding ‘google_key’ property on context (parents) or by providing a utility (see [voineali refs #5420, #5421]
  • Feature: Added an easy way to plugin CSS/JS resources by simply providing some utilities (see [voineali refs #5420]
  • Feature: Made this package Plone independent (Zope2 minimal requirements) [voineali refs #5420]

4.7 - (2012-08-27)

  • Bug fix: Skip invalid or empty cells on conversion to daviz-json instead of falling back to 0. [voineali refs #5453]

4.6 - (2012-08-10)

  • Upgrade step: Within “Plone > Site setup > Add-ons” click on upgrade button available for [voineali refs #5419]
  • Feature: Removed p4a.z2utils dependency [voineali fixes #5419]
  • Feature: Improved UX of daviz regarding errors [szabozo0 #5372]
  • Bugfix: Fixed columns order [szabozo0 #5137]

4.5 - (2012-07-23)

  • Bug fix: Fixed ‘Data settings’ table when there are many columns by adding a bottom scrollbar [voineali refs #5363]
  • Change: Moved ‘Data settings’ tab to the end as it seems it confuses users about the next steps they have to take in order to create new visualizations [voineali refs #5363]
  • Bug fix: Made table’s columns headers editable within ‘Data settings’ panel in order to be able to edit them without having to add an Exhibit View [voineali refs #5363]

4.4 - (2012-07-13)

  • Change: Improved the labelling and display of downloadable data. [demarant]
  • Bug fix: Added list type in ‘Data table (preview)’ in order to be used with Exhibit framework and also fix detection of columns that explicitly define column type in header using ‘:’ syntax (e.g. topics:list) [voineali refs #5316]
  • Bug fix: Fixed auto-detection of numbers by lowering boolean priority [voineali refs #5316]
  • Bug Fix: Fixed i18n missing tags and i18n:domain in .pt files [prospchr refs #5162]

4.3 - (2012-06-12)

  • Bug fix: Fixed ‘unicode’ object has no attribute ‘get’ error on download.json [voineali fixes #5223]
  • Bug fix: fixed markup of HISTORY.txt file [ciobabog refs #5231]
  • Feature: Allow the user to confirm and adjust auto-detected column types [voineali refs #5024]
  • Upgrade step: Within “Plone > Site setup > Add-ons” click on upgrade button available for
  • Feature: Added unique URLs for tabs in view mode in order to easily bookmark and share them. Also support browser history (back and forward buttons) [voineali refs #4851]

4.2 - (2012-04-26)

  • Feature: Made Visualization data downloadable (HTML, CSV, TSV, JSON, XML, XML with Schema) [voineali #5038]
  • Bug fix: Use non-@@ version of daviz-relateditems.json in order to easily cache and purge it using [voineali #5074]

4.1 - (2012-04-11)

  • Bug fix: Invalidate memcache on ObjectModifiedEvent for all IVisualizationEnabled objects [voineali #5074]
  • Bug fix: Use converter fallback for table cells that doesn’t contain valid numbers, dates, etc in order to minimize errors [voineali #4934]

4.0 - (2012-03-30)

  • Initial release: Moved eea.daviz core API to this package in order to make the visualization libraries usable as standalone packages outside eea.daviz bundle [voineali #4996]

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