gvisTreeMap(data, idvar = "", parentvar = "", sizevar = "",
colorvar = "", options = list(), chartid)data.frame. The data has to have at
least four columns. Each row in the data table describes
one node (a rectangle in the graph). Each node (except
the root node) has one or more parent nodes. Each node is
sized and colored accordindata describing the ID
for each node. It can be any valid JavaScript string,
including spaces, and any length that a string can hold.
This value is displayed as the node header.data that match to
entries in idvar. If this is a root node, leave
this NA. Only one root is allowed per treemap.data with positive
values to define the size of maps. Any positive value is
allowed. This value determines the size of the node,
computed relative to all other nodes currently shown.
This value is ignored for non-leaf data with values to
define range of color. The value is used to calculate a
color for this node. Any value, positive or negative, is
allowed. The color value is first recomputed on a scale
from minColorValue