Javascript DSL for Grammar of Graphics extended to support interactivity and backend data-processing support. Written in coffeescript
See notes for implementation/commit notes.
See the website for some more examples.
Install node
brew install node
Install gg
npm install
Install coffeescrip
---
Compile
cake build
cake release
Screenshot!
- ggplot2 (+ shiny?)
- ggobi
- tableau
- protovis
- perfuse
- cranvas
XForms
-
Ues a consistent spec for an xform (layers also use this)
{ type: STRING aes: { [aesthetic: MAPPING SPEC]* // [group: MAPPING SPEC] // precede computation with split, follow with join/label } [param: [STRING | NUMBER | OBJECT | FUNCTION]]* }
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Support asynchronous operators (send to thread, send to REST API)
-
Support data/table spec option
- what should the API be?
-
support params/args in xforms -> add @param() to xform method list
-
Support grouping and propogating mapped discrete aesthetics down the workflow
-
allow aesthetics aliases color: "attr2" actually compiles to fill: "attr2" stroke: "attr2"
Workflow
- support
Scales
- use provenance data to decide the "correct" scales to use for a table column
- allow position scales to use same units/pixel
Coordinate System
- Coordinate systems (esp. pie charts)
Rendering
- draw facet labels after geometries
Misc
- remove nested arrays from tables, and support partition by clauses in xform operators
- name the phases and the operators more consistently and predictably
- documentation
- Regularize/rationalize/document use of CSS for controlling appearence.
- In-browser interactive graphic builder. (REPL?)
Provenance
- add provenance system
Tables
- figure out sane semantics for table mapping if a nested value is mapped
- support detecting scales types (color scales esp)
- FIX COORD SWAP, AND CONSOLIDATE TABLE COLUMNS ONTO SINGLE SCALE OBJECT, TYPED SCHEMAS?
- support tables as columns (blocker for line charts).
- add types to tables
- allocate panes after computing the a[x]s tick size of y a[x]s to know how much spacing to give
- allow aesthetics with dashes in name (e.g., fill-opacity) in evaled JS scripts -> currently var fill-opacity = row['fill-opacity']
- render bars
- in aesthetic mappings, differentiate evaled e[x]ressions and string constants -> evaled e[x]ressions are of form: "{ JAVASCRIPT }" string values are ""
- fix instantiating barriers
- fixed problem where scales.scale('[x]) returns same gg.scale for all layers
- make stats work
- make positioning work
- make sure retraining scales after positioning works -> facets set position range in allocatePanes. need to make sure if ranges are set that they will be used in future. -> stop overwriting e[x]sting scales objects?
- Original code jacked from http://gigamonkey.github.com/gg/.
- Lots of inspiration from the fantastic http://ggplot2.org/.
- [http://en.wikipedia.org/wiki/Leland_Wilkinson](Leland Wilkinson's) grammar of graphics is what started this all.
