Microsoft.Data.Analysis.DataFrame extension methods for MatPlotLibNet — plot directly from typed DataFrames (Line, Scatter, Hist with hue grouping), compute 52 financial / signal-processing indicators (SMA, EMA, RSI, MACD, Bollinger, ADX, ATR, VWAP, Ichimoku, Supertrend, MAMA/FAMA, Garman-Klass, Yang-Zhang, VPIN, BOCPD, Transfer Entropy, and more), and run polynomial regression with confidence bands — all from named column strings.