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ELIMINATING
CHARTJUNK
“   Above all else, show the data.
                       Edward Tu e
                                     ”
Photograph: Buzz Anderson
Source: Kouchoukos et al., The New England Journal of Medicine, 1994
“   You can't possibly communicate big data accurately


                                    ”
    if you can't handle small data first.

                                    Naomi Robbins
Never, ever use pie charts.
“   [Piecharts] have no place in the world of grownups,
    and occupy the same semiotic space as short pants,


                                                          ”
    a runny nose, and chocolate smeared on one’s face.
                                     Coda Hale
Oil           Hydro

      Percentage of the USA’s power supply
                                                             Other


                                             Natural gas



                                                                        Coal

                                             Nuclear




Source: U.S. Department of Energy
Bar charts are better,
but still can be tricky.
50




 37.5
                                    Percentage of the USA’s power supply


   25




 12.5




     0




Source: U.S. Department of Energy
3-D charts are irredeemably terrible.
“   3-D is a waste of a perfectly good dimension.

                                      Roger Ebert
                                                    ”
TURN A BORING BAR GRAPH
 INTO A 3D MASTERPIECE!
Renewable water resources, by country
     Brazil

    Russia

  Canada

      USA

    China

      India

Columbia

      Peru

     Zaire

               0                      2,000         4,000         6,000
Source: Shiklomanov and Rodda, 2003
                                                                  km3/y
Renewable water resources, by country
                     0
                                      2,000
                                                  4,000
                                                                  6,000 km3/y
Brazil

Russia

Canada

    USA

   China
      India
Columbia
        Peru
       Zaire


Source: Shiklomanov and Rodda, 2003
Chartjunk refers to all visual elements in charts
and graphs that are not necessary to comprehend
the information represented on the graph,
or that distract the viewer from this information
data : ink
“   Data-ink is the non-erasable core of a graphic,
    the non-redundant ink arranged in response
    to variation in the numbers represented.
                                   Edward Tu e   ”
Installed wind capacity in the United States
                            10000

                                    9,403
Wind energy capacity (MW)




                             7500



                            5000


                                              3,604
                             2500
                                                      2,798
                                                                  1,849      1,810         1,758        1,557   1,274     1,244   1,203
                               0
                                         as




                                                a




                                                           a




                                                                         n




                                                                                  ta




                                                                                                    n



                                                                                                          ois




                                                                                                                    ork




                                                                                                                            ado




                                                                                                                                         ta
                                               Iow




                                                            rni




                                                                      gto




                                                                                                 ego
                                                                               eso




                                                                                                                                       ko
                                     Tex




                                                                                                        Illin




                                                                                                                  wY




                                                                                                                            lor
                                                        lifo




                                                                                                                                     Da
                                                                        n




                                                                                               Or
                                                                                nn
                                                                    shi




                                                                                                                          Co
                                                                                                                Ne
                                                      Ca




                                                                             Mi




                                                                                                                                    rth
                                                                  Wa




                                                                                                                                  No
                                                                                       State



Art of Scientific Presentations, March 31, 2011
Installed wind capacity (megawa s)
      10,000



         7,500



        5,000



         2,500



                 0         Texas           Iowa   California   Washington   Minnesota   Oregon   Illinois   New York   Colorado   North Dakota




Source: American Wind Energy Association
“   Dark grid lines are chartjunk. They carry no information,
    clu er up the graphic, and generate graphic activity
    unrelated to data information.
                                   ”       Edward Tu e
“   Furthermore, of all methods for analyzing and communicating
    statistical information, well-designed data graphics are usually


                                                           ”
    the simplest and at the same time the most powerful.

                                             Edward Tu e
April 6
Prepare 5 slides that you intend to use in
your Pecha Kucha presentation, and bring them
to class for informal discussion.
April 6
Jeffrey Falk
Assistant Director, University News Service
April 20
Have dra versions of your Pecha Kucha
presentations ready to deliver in practice runs
(to an audience of one or two partners).

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GEOG8260.10, Eliminating chartjunk

  • 2.
  • 3. Above all else, show the data. Edward Tu e ”
  • 5.
  • 6. Source: Kouchoukos et al., The New England Journal of Medicine, 1994
  • 7.
  • 8. You can't possibly communicate big data accurately ” if you can't handle small data first. Naomi Robbins
  • 9. Never, ever use pie charts.
  • 10.
  • 11. [Piecharts] have no place in the world of grownups, and occupy the same semiotic space as short pants, ” a runny nose, and chocolate smeared on one’s face. Coda Hale
  • 12. Oil Hydro Percentage of the USA’s power supply Other Natural gas Coal Nuclear Source: U.S. Department of Energy
  • 13. Bar charts are better, but still can be tricky.
  • 14. 50 37.5 Percentage of the USA’s power supply 25 12.5 0 Source: U.S. Department of Energy
  • 15. 3-D charts are irredeemably terrible.
  • 16. 3-D is a waste of a perfectly good dimension. Roger Ebert ”
  • 17. TURN A BORING BAR GRAPH INTO A 3D MASTERPIECE!
  • 18. Renewable water resources, by country Brazil Russia Canada USA China India Columbia Peru Zaire 0 2,000 4,000 6,000 Source: Shiklomanov and Rodda, 2003 km3/y
  • 19. Renewable water resources, by country 0 2,000 4,000 6,000 km3/y Brazil Russia Canada USA China India Columbia Peru Zaire Source: Shiklomanov and Rodda, 2003
  • 20.
  • 21. Chartjunk refers to all visual elements in charts and graphs that are not necessary to comprehend the information represented on the graph, or that distract the viewer from this information
  • 22.
  • 23.
  • 25. Data-ink is the non-erasable core of a graphic, the non-redundant ink arranged in response to variation in the numbers represented. Edward Tu e ”
  • 26. Installed wind capacity in the United States 10000 9,403 Wind energy capacity (MW) 7500 5000 3,604 2500 2,798 1,849 1,810 1,758 1,557 1,274 1,244 1,203 0 as a a n ta n ois ork ado ta Iow rni gto ego eso ko Tex Illin wY lor lifo Da n Or nn shi Co Ne Ca Mi rth Wa No State Art of Scientific Presentations, March 31, 2011
  • 27. Installed wind capacity (megawa s) 10,000 7,500 5,000 2,500 0 Texas Iowa California Washington Minnesota Oregon Illinois New York Colorado North Dakota Source: American Wind Energy Association
  • 28. Dark grid lines are chartjunk. They carry no information, clu er up the graphic, and generate graphic activity unrelated to data information. ” Edward Tu e
  • 29.
  • 30.
  • 31.
  • 32.
  • 33. Furthermore, of all methods for analyzing and communicating statistical information, well-designed data graphics are usually ” the simplest and at the same time the most powerful. Edward Tu e
  • 34.
  • 35.
  • 36. April 6 Prepare 5 slides that you intend to use in your Pecha Kucha presentation, and bring them to class for informal discussion.
  • 37. April 6 Jeffrey Falk Assistant Director, University News Service
  • 38.
  • 39. April 20 Have dra versions of your Pecha Kucha presentations ready to deliver in practice runs (to an audience of one or two partners).