# QuanTAlib Class Types by Input Requirements

## Two TValues Required
- Huber
- Mae
- Mapd
- Mape
- Mase
- Mda
- Me
- Mpe
- Mse
- Msle
- Rae
- Rmse
- Rmsle
- Rse
- Rsquared
- Smape
- Beta (asset vs market returns)
- Corr (correlation between two series)
- Covar (covariance between two series)
- Granger (Granger causality test)
- Kendall (Kendall rank correlation)
- Spearman (Spearman rank correlation)
- Theil (Theil's U statistic)

## One TValue Required
- Curvature
- Entropy
- Hurst
- Kurtosis
- Max
- Median
- Min
- Mode
- Percentile
- Skew
- Slope
- Stddev
- Tsf
- Variance
- Zscore
- Apo
- Dpo
- Macd
- Mom
- Pmo
- Po
- Ppo
- Roc
- Trix
- Vel
- Ac
- Ao
- Bop
- Cci
- Cfo
- Chop
- Cmo
- Cog
- Coppock
- Crsi
- Cti
- Dosc
- Efi
- Fisher
- Rsi
- Rsx
- Smi
- Srsi
- Stc
- Stoch
- Tsi
- Uo
- Willr

## One TBar Required
- Aroon (uses high/low)
- Vortex (uses high/low/close)

## Two TBars Required
- Adx (requires two bars for true range calculation)
- Adxr (requires two bars for directional movement)
- Dmi (requires two bars for directional movement)
- Dmx (requires two bars for directional comparison)