International Archives of the Photogrammetry, Remote Sensing
hich objects are of interest for beach nourishments.
determine w
a multivariate visualization tool as
For general purposes,
| by this prototype is useful for decision makers to
and Spatial Information Sciences
understand the datase
their analyses or predictions.
. Vol XXXV, Part B4. Istanbul 2004
t and to support the decision makers in
proposec
themunc map
0.122688
0.150582
0.176476
0.20637
0.234264
0.262159
0.290053
0.317947
0.345841
(1) Data set menu
[1995 =
relative.map
gridded.map
themunc.map
attracc.map
tempunc.map
complete.map
Pos Acc Hel m Pos, Acc Grid m Ther Acc CC
100:00 100.00 1.00 ^
|
Them Acc QAA Temp Acc IDC Comp. Data
1.00 1.00 1.00
0.01 9.01 0.01
PCP menu
‘compartment |
pos acc rel
pos acc-grid
them acc CC
them acc QAA
them acc TDC
comp. data
(3) TOSM menu
[1995 x!
1990 f
1991
1992 relative.map =
1993| gridded.map ;
IE themunc.map
11995 attracc.map
T9961 1 tempunc.map
1997 | complete.map
19981 FE LL + +++ — || Threshold
1990| ISESELEDEES p ELE =
000 | ETE TI Fier Lj] 0.25
Figure 3: A prototype for multivariate visualization of qu
display, showing the thematic uncertainty
quality elements for every compartment.
compartment or as a timeseri
threshold value for an user-required quality. With
visualization tool, it is essential that a user
tives of the visual exploration and the
atterns displayed. The
For proper use of the
understands the objec
meaning of what is visible in the p
visualization tool must be straightforward and uncomplicated in
ort rather than obstruct understanding. Therefore, a
eloped and introduced to
and comments. Users’
order to supp
working prototype needs to be dev
several users for empirical assessment
comments will be vital to determine whether the techniques are
comprehensible, and also to determine the degree to which
users may be able to benefit from visualization of quality
ality elements for the beach nourishment proces
of the compartments for
In the PCP menu the user
e. Section 3 is the temporal ordered sp
a window slider the user
s. Section | is the main
1995. Section 2 is parallel coordinate plot, showing all
can select to visualize all quality elements per
ace matrix. In the TOSM menu, the user can enter à
can select a specific observed dataset.
d in order to refine design
elements. These comments are neede
ironment.
requirements for a prototype visualization env
Hence, the usability of the prototype will be tested by a group
of target users. The users have a chance to try out the working
formance with the
of the prototype. Furthermore, the users' per
prototype will be measured against predefined quantitative and
outcome
pecifications. Subsequently, the
r the product is à Success
bility information
aluation process
qualitative usability s
of the usability test will show whethe
or not. Faulkner (2000) states that usa
gathered from this final stage of a usability ev
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