| is_tdigest | Allocate a new histogram |
| length.tdigest | Total items contained in the t-Digest |
| quantile.tdigest | Calculate sample quantiles from a t-Digest |
| td_add | Add a value to the t-Digest with the specified count |
| td_create | Allocate a new histogram |
| td_merge | Merge one t-Digest into another |
| td_quantile_of | Return the quantile of the value |
| td_total_count | Total items contained in the t-Digest |
| td_value_at | Return the value at the specified quantile |
| tquantile | Calculate sample quantiles from a t-Digest |
| [.tdigest | Return the value at the specified quantile |