I'm trying to plot a biplot by R package PCAtools, and I want to highlight some classes that might be interesting. However, the points are crowded near 0 and overlapped. How can I make the points in r...

I have an array of tensors for a single image. I want to flatten the vectors and perform PCA on the same. The below is the code to extract the tensors on a single image : bottle_neck_model_tensors = b...

I'm trying to run a PCA on a really large dataset (160 000 x 20 000 variables, approx 6.3G in the file but much more when loaded in R) on a cluster. However, it is taking a high amount of time (my job...

I'm reading "Applied Predictive Modeling" by Kuhn and Johnson. In the code for chapter 3.3 Data Transformations for Multiple Predictors, there is a code snippet: pr <- prcomp(~ AvgIntenCh...