add interpolation to line charts add histograms add rounding to histograms linear regression multiple Y axes clustering DBScan KMeans Elbow method for evaluaition classification 80/20 splits, confidence interval calculation for cases like periodicity detection, add vertical line into dimple add correlation between 2 data sets add a bit of layouting, at least split items vertically add fivenum lines as separate lines into dimple, as series figure out how to render a polynominal with coefficients in d3 Add smoothing of time-series FFT Scatterplot matrix? Q-Q plots turn on/off different categorical values (or even numerical)? Scaling of the dataset number to ratio remove cluster filter from non-clusterable graphs