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CHANGES.txt
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pattrn (2.0.0)
This is an almost complete rewrite of the Pattrn codebase, adding new
analytical features and improving the app's UX.
Major new features for data editors:
* added support for GeoJSON data sources
* add new variable type: hierarchical tag trees
* an arbitrary number of variables of each type can now be used
(up from the previous hardcoded limit of five variables per type)
* updated UX:
* switched to off-canvas panel for chart lists
* switched to off-canvas panel for event details
* these changes allow to make the map wider for easier navigation
* metadata for variables can be used to set descriptive label
names (rather than displaying raw variable names)
* support for multiple origin sources of data:
* each Pattrn instance consumes a single GeoJSON file...
* ...but this can contain data from multiple sources
* different charts and filters can be configured for each
distinct origin source
* data points can be visually differentiated by using
a unique colour for each origin source
* tag and boolean filters are now operating as *or* filters
by default (rather than *and*, which is often less useful);
this can be reverted to *and* (for the moment only
instance-wide)
* multiple data validation and cleanup improvements to remove
invalid data
* support for bundling data packages via NPM
* major performance improvements (visualising
datasets of ~20,000 events is now practical: an improvement
of an order of magnitude over Pattrn v1)
The Google Sheets data source is still supported for the time being,
for users who wish to try Pattrn using the often familiar interface
of a spreadsheet to manage data, or who wish to use the prototype
Pattrn Editor (see documentation: https://docs.pattrn.co/pattrn-on-gapps/).
For advanced users, however, the GeoJSON source data format is
now the preferred format, as most of the new features above can
only be linked to the flexibility provided by GeoJSON.
As GeoJSON sources can be hosted on any HTTPS site, these could
be generated dynamically through applications similar to the
legacy Pattrn Editor, enabling to crowdsource event data.
Major new features for developers:
* legacy code has been almost completely rewritten and refactored
* except for minor data-related and UI-related logic, all the code
has been rewritten using ES2015 features
* the new code is organised into small modules
* HTML is generated from modular Pug templates
* CSS is generated from modular SCSS stylesheets (compiled via libsass)
* Gulp build pipeline
* Transpilation via Babel
* Bundling via Browserify
* local preview server for easy debugging
The Pattrn user documentation has been vastly expanded, and is now
available at a dedicated site: https://docs.pattrn.co, with
content generated from a dedicated repository
(https://gitlab.com/pattrn/pattrn-docs).
Besides these changes, the Pattrn v2.0 release also builds upon
parallel work done to develop and improve best practices for the
preparation and packaging of data (see documentation:
https://docs.pattrn.co/pattrn-data-packages/)
We hope that both users who have experience with Pattrn v1.0 and
new users are as excited about this new release of Pattrn as the Pattrn
team at Forensic Architecture is.
Although the list of new major new features is long, this release was
mainly meant to constitute a stage of stabilisation for the Pattrn
project, after the major undertaking of developing and releasing as
free software Pattrn v1.0, which was a timely and new major data
analytics platform for conflict monitoring, investigative journalism,
human rights, citizen science and research.
Pattrn v2.0 is a major new milestone of a long future journey, whose
next steps should hopefully rest on solid foundations thanks to the
major code rewriting and refactoring efforts undertaken during the
v2.0 development cycle.
We always welcome enquiries, critique, feature requests and
contributions to the documentation and to the source code: if you
use Pattrn, please also join the Pattrn discourse on Gitter
to stay in touch with the Pattrn team!
-- andrea rota <[email protected]> Tue, 4 Apr 2017 18:48:13 +0200
pattrn (1.0)
* First release of the Pattrn app
-- Francesco Sebregondi <[email protected]> Mon, 11 Jan 2016 15:19:24 -0500