forecast_linear

Predict a y value from linear regression at a single x.

Syntax

v = forecast_linear(x, knownys, knownxs)

Description

Returns the y value predicted by linear regression of (knownxs, knownys) evaluated at x. Equivalent to one application of trend with a scalar newxs.

Example

forecast_linear(5, [2 4 6 8], [1 2 3 4])    % 10

See also

• trend — Linear-trend predictions.
• linest — Linear regression coefficients (with optional statistics).