Definitions
In plain terms
It expresses upward range expansion relative to total gap-aware range on a percentage scale.
Technical
The two smoothed inputs must be aligned and the zero true-range policy, readiness, precision, and missing-bar handling must be declared.
Scope
A high +DI is directional participation, not a standalone strength or return forecast.
Formula
+DI = 100 * smoothed +DM / smoothed TR+DI_t=100\frac{S^+_t}{STR_t}| Symbol | Meaning | Unit |
|---|---|---|
S+DM | smoothed positive directional movement | price |
STR | smoothed true range | price |
Output unit: percent
Examples
- A governed lesson calculates or identifies Positive Directional Indicator only after its parameters, state, timing, and edge cases are declared.
Common misconceptions
- A high +DI is directional participation, not a standalone strength or return forecast.
Concept relationships
Required by
Where this concept is used
Evidence and governance
- TA-Lib Directional Movement Index Implementation TA-Lib · first party technical publication
Supports: preferred label, short definition, technical definition, formula
Limits: Zero-denominator and compatibility behavior can differ from the Fintech Builder package and must be stated explicitly.
- Reviewed by
- fintech-builder-batch-007
- Last reviewed
- 2026-07-27
- Next review
- 2027-07-27
- Record status
- evidence reviewed
This record is evidence-reviewed and readable, but not yet promoted to published — it is served noindex,follow and excluded from the sitemap.