PCA update - 2015ASTR511/EXD GitHub Wiki

Moved Zeljko's initial python code to two notebooks.

In apogee_pca I've started doing PCA on the 15 abundances. Ideally, we'll be able to describe the alpha element abundances with just a few components, instead of using all 15 measurements. Some of the figures show large scatter plots where I'm plotting given eigen coefficients against each other, looking for correlations. The money plot of today will look something like this where our x-axis will be the 15 different abundances (think of it as a really, really low-resolution spectrum we're trying to reconstruct).

What has NOT been done is flag checking! APOGEE has tons of flags and caveats and this analysis will get easier/better/correct once we're working with the true sample. Let's get people working on this...