Nothing
plotCrs <- function( x ) {
if( !inherits( x, "crs" ) ) {
stop( "argument 'x' must be of class 'crs'" )
}
xVarNames <- colnames( x$deriv.mat )
dat <- eval( x$call$data )
medianDat <- data.frame( no = 1 )
for( varName in xVarNames ) {
if( is.factor( dat[[ varName ]] ) ) {
medianDat[[ varName ]] <-
names( sort( table( dat[[ varName ]] ), decreasing = TRUE ) )[1]
} else {
medianDat[[ varName ]] <- median( dat[[ varName ]] )
}
}
for( varName in xVarNames ) {
# create data set for making the predictions
if( is.factor( dat[[ varName ]] ) ) {
xValAll <- levels( dat[[ varName ]] )
} else if( is.integer( dat[[ varName ]] ) ) {
xValAll <- seq( from = min( dat[[ varName ]] ),
to = max( dat[[ varName ]] ), by = 1 )
} else {
xValAll <- seq( from = min( dat[[ varName ]] ),
to = max( dat[[ varName ]] ), length.out = 100 )
}
simDat <- NULL
for( i in 1:length( xValAll ) ) {
simDat <- rbind( simDat, medianDat )
}
simDat[[ varName ]] <- xValAll
# calculate predicted values
predVal <- predict( x, newdata = simDat )
# plot
if( is.factor( dat[[ varName ]] ) ) {
predVal <- c( predVal )
names( predVal ) <- simDat[[ varName ]]
barplot( predVal, main = varName, ylim = range( predVal ) )
} else {
plot( simDat[[ varName ]], predVal, main = varName )
}
}
invisible()
}
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