Home
Function References
Reference for all built-in functions
Functions
T
tema

About DolphinDB
Getting Started
Deployment
Deploy and upgrade DolphinDB on premise or in the cloud
Programming Guide
DolphinDB scripting language and SQL reference
Database
Core features of DolphinDB's distributed architecture, basic database operations, and configuration setup.
Streaming
Publish, subscribe to, and process streaming data
Migration
Import and migrate data from various data sources to DolphinDB databases
Maintenance
Database maintenance and system management
Troubleshooting
Common errors and corresponding solutions
Function References
Reference for all built-in functions
API & Connector
API in different languages for users to call DolphinDB from their programs
Plugins
Guidance on the use of plugins and plugin development for multiple application scenarios
Tutorials
Tutorials on database concepts and application scenarios
Release Notes
Release notes and compatibility changes for DolphinDB server, plugins and APIs

tema

Syntax

tema(X, window)

Please see TALib for the parameters and windowing logic.

Details

Calculate the Triple Exponential Moving Average (tema) for X in a sliding window of the given length.

The formula is:

Returns

DOUBLE type with the same data form as X.

Examples

x=12.1 12.2 12.6 12.8 11.9 11.6 11.2
tema(x,3);
// output: [,,,,,,11.24444444444444]

x=matrix(12.1 12.2 12.6 12.8 11.9 11.6 11.2, 14 15 18 19 21 12 10)
tema(x,3);


col1	col2






11.2444	10.6296

Related functions: ema, dema