Top
left: uncertainty glyphs – uncertainty
in direction mapped to width of arrow head.
Uncertainty in magnitude
can be
mapped to extra bars on the arrow head (not shown).
Top
right: contour lines showing
uncertainty. Solid contour lines
represent high certainty, while
dashed and
broken contours represent places with higher uncertainty. Color can be used for other
fields. Other possibilities include line thickness,
transparency, etc.
Bottom
set: Shows volume rendering of ocean
circulation model data using a 2D transfer function.
The
transfer function on the left is actually a scatterplot of data vs
uncertainty. The user then specifies
what color
to render different parts of the scatterplot.
In this example, low data values with low uncertainties
are
colored green, while high data values with low uncertainties are colored
red. The images on the right
shows
volume rendered images of the circulation data. The dark regions correspond to places where the
uncertainty
values are higher – which also happen to be in the vicinity of a shelf break
region where there
is higher
standard deviation of different physical fields such as temperature, salinity,
etc.