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wedge Sean Gustafson Patrick Baudisch Carl Gutwin Pourang Irani clutter-free visualization of o
wedge
Sean GustafsonPatrick BaudischCarl GutwinPourang Irani
clutter-free visualization of off-screen locations
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wedge
halo: clutter problem wedge: avoids overlap
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atedworkrel
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overviews
[Plaisant 95 and many others]
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fisheye views
fisheye views
[Carpendale 01]
6 [Gustafson 07]
edgeradar
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simple arrows
[Tecmo Bowl 87]
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scaled and stretched arrows
[Burigat 06]
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“space-efficient fisheye technique”city lights
[Mackinlay 03]
10 [Baudisch 03]
halo
11 [Baudisch 03]
halo
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eproblemth
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the problem: clutter
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the problem: clutter
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corner
(also not great: corners)
side
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cut lines color
ovalsclustering
Irani et al.Baudisch & Rosenholtz
initial approaches
separatevisually
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• circles offer only a single degree of freedom: radius (aka intrusion)
• in some cases varying allows resolving overlap,in others it does not
• how can we get additional degrees of freedom?
separate geometrically
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ewedgeth
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leg
legtarget
basebasebasebasewedge
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halo wedge
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3 degrees of freedom
rotationapertureintrusion
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avoiding overlap
rotation
aperture
intrusion
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outalgorithmlay
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avoidance algorithm
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avoidance algorithm
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avoidance algorithm
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avoidance algorithm
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avoidance algorithm
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leaves 2 degrees
intrusion ~ distance
base-width ~ distance
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wedgedemo
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serstudyu
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two interface conditions
halo and wedge
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halo
task 1: locate
wedge
same as original halo paper
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halo
task 2: closest
wedge
same as original halo paper
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halo
task 3: avoid
wedge
same as original halo paper
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IV: density
sparse dense
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16 participants
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1.wedge is more accurate
2.larger improvement in dense condition
3.larger improvement in corners
(no hypothesis about task time)
hypotheses
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results
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no significant difference in task time
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participants were significantly more accurate when using the wedge
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error in pixels
60
40
20
0SparseDense
Side
Wedge
Halo
locate task
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error in pixels
SparseDense
60
40
20
0SparseDense
Side Corner
Wedge
Halo
locate task
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1.wedge is more accurate
2.larger improvement in dense condition
3.larger improvement in corners
hypotheses
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fiedpointinguniwedge=
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intrusion 0
citylights
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aperture 0
stretched arrows
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?halo
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round bases
distance information in corner distance information along arc
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halo
aperture 360
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elingpointingmod
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better layout than this?
?
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beam
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beam
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beam
beam
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orbitalbeam
beam
58 intrusion
59 intrusion
60 aperture
61 aperture
62 rotation
63 rotation
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run user study with many users to determine constants
write new layout algorithm
next steps
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thanksSean Gustafson
http://www.gustaf.ca/
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recent results
post-publication20 more participants
locate task
SparseDense
Err
or (
pixe
ls)
80
60
40
20
0SparseDense
SideCorner
Wedge
Halo
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recent results
post-publication20 more participants
SparseDense
Err
or R
ate
60%
40%
20%
0%SparseDense
SideCorner
WedgeHalo
closest task
