Graphics Reference
In-Depth Information
Figure
.
.
hree-dimensional mosaicplot of the Titanic data. Survivors are highlighted. Differences
between the survival rates of men and women are emphasized. In all classes, the women had higher
survival rates than the men
Figure
.
.
hree-dimensional mosaicplot of the Titanic data. Survivors are highlighted. Survival rates
for men (right)andwomen(let) in all of the classes are plotted. he survival rate for women increases
with class. he survival rate for men shows a peculiarity: it is extremely low for men in the second class
Figures
.
and
.
wereconstructed usingtwosuccessive splitsinthehorizontal
direction and then a final split in the vertical direction. For the third dimension, we
colored some of the rectangles to show the splits and did not physically split them.
Variations like these are not specifically fixed in the algorithm. he original mosaic-
plot, as defined by Hartigan and Kleiner (
), has splits in alternating directions,
whereas doubledecker plots (Hofmann et al.,
) only have horizontal splits, ex-
cept forthe last dimension, whichis split in the vertical direction (and usually shows
highlighting).
To distinguish between mosaicplots that show the same data but refer to struc-
turally different contingency tables, we must consider extra information about the
plot: wewill call this additional information the structure or frame (Wilkinson,
)
