EVA WG: Subgroup on Visualization Techniques
August 27, 2013
Participants: Aritra Dasgupta, Steve Aulenbach, Yaxing Wei, Dan Ricciuto, Christopher Schwalm, Enrico Boldrini, Anna Michalak, Bill Hargrove,
Debbie Huntzinger, Claudio SIlva
not able to participate: Forrest Hoffman
Agenda
1. Updates
2. Vis techniques
3. Next teleconference
4. Other Topics
Notes from August 2, 2013 Teleconference
http://epad.dataone.org/2013-08-02-EVA-Telecon
Notes
1. Updates -- Bob
- Next EVA Working Group Meeting is October 22 - 24, 2013, Tamaya Hyatt Hotel, Santa Ana Pueblo, NM
- Part of the DataONE All-Hands Meeting
- EVA will meet for 2 to 2.5 days
- DataONE will have plenary sessions and poster / session reception
- Logistics will be announced in next few weeks
- Air and hotel reservations will be made by DataONE (RioGrande travel)
- Travel expenses will be covered by DataONE
- DataONE EVA pbWiki: http://dataoneeva.pbworks.com
2. Vis Techniques -- Aritra
- One part of this activity was to collect figures (maps, scatter plots, bar charts, line plots) from the literature, critique the effectiveness of these plots, and develop a set of categories for the effectiveness.
- Maps
- matrix of 17 North American images of model outputs
- show spatial extent of the models and show the many ways the models are different
- not just range or mean, but the spatial patterns of lows and highs
- other figures in the paper show slices of these images
- aesthetics: thick lines, outline of continent, background (green and purple (too close to the color bar)
- lots of room for improvement in aesthetics
- color choices (get rid of rainbow); different scales is a hindrance; move units next to color bar,
- Maps have their own advantages, hard to replace
- Scatter Plots
- for Figure from Debbie's figure, use lines and give each "outlier" model a symbol to indicate which model
- need to define what an "outlier"
- within a paper, it would be good to use a common format for each figure (always have GPP on top). Having one different (cf. slide 7) then it may be hard to carry information from one slide to the next.
- Ozone figure: remove individual model points and retain just the line to remove clutter
- but keep each individual observations
- Line Charts
- The other part of this activity is to pick representative visualizations and develop alternative methods for visualizing the data.
- Ultimately the group will develop a set of best practices for visualizing complex data.
Examples
Scatterplots
Maps
3. Next Teleconference
will do a Doodle Poll