image.pep {PEPBVS} | R Documentation |
Heatmap for top models
Description
Generates a heatmap where the rows correspond to the (top) models
and the columns to the input/explanatory variables. The value depicted
in cell (i,j)
corresponds to the posterior inclusion probability
of variable i
if this
is included in model j
and zero otherwise.
Usage
## S3 method for class 'pep'
image(x, n.models = 20, ...)
Arguments
x |
An object of class pep (e.g., output of |
n.models |
Positive integer, number of models to be shown on the heatmap. Default value=20. |
... |
Additional parameters to be passed to |
Details
The number of models to be displayed on the heatmap is computed as the minimum
between the number asked by the user and the number of models present in
the object x
.
The color code is as follows: the darker the blue in the figure, the higher the posterior inclusion probability is, while white means that the variable is not included in the model.
In the special case of no explanatory variables, no heatmap is produced and a message is printed.
Value
No return value, used for heatmap generation.
See Also
Examples
data(UScrime_data)
set.seed(123)
resu <- pep.lm(y~.,data=UScrime_data,beta.binom=FALSE,
algorithmic.choice="MC3",itermc3=5000)
image(resu)
image(resu,n.models=10)