Visualize data, centroids and response confidence intervals for a given
Gaussian mixture model with PCA. Optionally, color the samples according to annotations
labels.
mode standard deviations, assuming diagonal covariance matrices (modes x features, each row giving the sqrt of covariance diagonal for the corresponding mode)
ws
weight for each mode
labels
Optional: sample class labels to be indicated in colors.
confidence
Confidence interval for the responses based on the
covariances of each response. If NULL, no plotting.