| center.scale | Center and scale | 
| cim.kernel | Compute and display similarities between multiple kernels | 
| combine.kernels | Combine multiple kernels into a meta-kernel | 
| compute.kernel | Compute a kernel | 
| kernel.pca | Kernel Principal Components Analysis | 
| kernel.pca.permute | Assess variable importance | 
| mixKernel.users.guide | View mixKernel User's Guide | 
| plotVar.kernel.pca | Plot importance of variables in kernel PCA | 
| select.features | Select important features | 
| TARAoceans | TARA ocean microbiome data |