The ade4 Package - NexTag Supports Open Source Initiatives

pcaiv 195
pcaiv
Principal component analysis with respect to instrumental variables
Description
Usage
performs a principal component analysis with respect to instrumental variables.
pcaiv(dudi, df, scannf = TRUE, nf = 2)
## S3 method for class 'pcaiv':
plot(x, xax = 1, yax = 2, ...)
## S3 method for class 'pcaiv':
print(x, ...)
Arguments
dudi
df
scannf
nf
x
Value
xax
yax
a duality diagram, object of class dudi
a data frame with the same rows
a logical value indicating whether the eigenvalues bar plot should be displayed
if scannf FALSE, an integer indicating the number of kept axes
an object of class pcaiv
the column number for the x-axis
the column number for the y-axis
... further arguments passed to or from other methods
returns an object of class pcaiv, sub-class of class dudi
rank
nf
eig
lw
cw
Y
X
tab
c1
as
ls
li
an integer indicating the rank of the studied matrix
an integer indicating the number of kept axes
a vector with the all eigenvalues
a numeric vector with the row weigths (from dudi)
a numeric vector with the column weigths (from dudi)
a data frame with the dependant variables
a data frame with the explanatory variables
a data frame with the modified array (projected variables)
a data frame with the Pseudo Principal Axes (PPA)
a data frame with the Principal axes of dudi$tab on PPA
a data frame with the projections of lines of dudi$tab on PPA
a data frame dudi$ls with the predicted values by X