Plots a variation of the Hotelling's T-squared statistic to visualize the contribution of each variable to a fault.

```
mspT2Plot(
trainData,
trainLabel,
trainT2,
newData,
newLabel,
newT2,
trainObs,
var.amnt
)
```

- trainData
an xts data matrix containing the training observations

- trainLabel
Class labels for the training data as a logical (two states only) or finite numeric (two or more states) vector or matrix column (not from a data frame) with length equal to the number of rows in ``data." For data with only one state, this will be a vector of 1s.

- trainT2
the Hotelling's T-squared values corresponding to the newLabel state calculated by mspTrain using the full training data with all variables included

- newData
an xts data matrix containing the new observation

- newLabel
the class label for the new observation

- newT2
the Hotelling's T-squared value returned by mspMonitor using the full new observation with all variables included

- trainObs
the number of observations upon which to train the algorithm. This will be split based on class information by a priori class membership proportions.

- var.amnt
the energy proportion to preserve in the projection, which dictates the number of principal components to keep

```
if (FALSE) {
# Create some data
dataA1 <- mspProcessData(faults = "B1")
traindataA1 <- dataA1[1:8567,]
# Train on the data that should be in control
trainResults <- mspTrain(traindataA1[,-1], traindataA1[,1], trainObs = 4320)
# Lag an out of control observation
testdataA1 <- dataA1[8567:8568,-1]
testdataA1 <- lag.xts(testdataA1,0:1)
testdataA1 <- testdataA1[-1,]
testdataA1 <- cbind(dataA1[8568,1],testdataA1)
# Monitor this observation
monitorResults <- mspMonitor(observations = testdataA1[,-1],
labelVector = testdataA1[,1],
trainingSummary = trainResults$TrainingSpecs)
tD <- traindataA1[,-1]
tL <- traindataA1[,1]
nD <- testdataA1[,-1]
nL <- testdataA1[,1]
tO <- 4320
vA <- 0.95
nT2 <- monitorResults$T2
tT2 <- trainResults$TrainingSpecs[[nL]]$T2
mspT2Plot(tD,tL,tT2,nD,nL,nT2,tO,vA)
}
```