missmap {Amelia} | R Documentation |
Plots a missingness map showing where missingness occurs in
the dataset passed to amelia
.
missmap(obj, legend = TRUE, col = c("darkred","wheat"), main, y.cex = 0.8, x.cex = 0.8, y.labels, y.at, ...)
obj |
an object of class "amelia"; typically output from the
function amelia . |
legend |
should a legend be drawn? |
col |
a vector of length two where the first element specifies the color for missing cells and the second element specifies the color for observed cells. |
main |
main title of the plot. Defaults to "Missingness Map". |
x.cex |
expansion for the variables names on the x-axis. |
y.cex |
expansion for the unit names on the y-axis. |
y.labels |
a vector of row labels to print on the y-axis |
y.at |
a vector of the same length as y.labels with row
nmumbers associated with the labels. |
... |
further graphical arguments. |
missmap
draws a map of the missingness in a dataset using the
image
function. The columns are reordered to put the most
missing variable farthest to the left. The rows are reordered to a
unit-period order if the ts
and cs
arguments were passed
to amelia
. If not, the rows are not reordered.
The y.labels
and y.at
commands can be used to associate
labels with rows in the data to identify them in the plot. The y-axis
is internally inverted so that the first row of the data is associated
with the top-most row of the missingness map. The values of
y.at
should refer to the rows of the data, not to any point on
the plotting region.
compare.density
, overimpute
,
tscsPlot
, image
, heatmap