env_secant(x_data, y_data, view, side)

Version 1.4.0.0 (3.3 KB) by Andreas Martin
Envelope with secant-method
5.0
(9)
2.8K Downloads
Updated 1 Sep 2017

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Function call: env_secant(x_data, y_data, view, side)
Calculates an envelope of data <y_data> over <x_data>.
Method used: 'secant-method'
env_secant() observates the max. slope of every about <view> points from last junction point, and joints them to the resulting envelope.
An interpolation over original x-values is finally done.
<side> ('top' or 'bottom') defines which side to evolve.

Cite As

Andreas Martin (2026). env_secant(x_data, y_data, view, side) (https://www.mathworks.com/matlabcentral/fileexchange/27662-env_secant-x_data-y_data-view-side), MATLAB Central File Exchange. Retrieved .

MATLAB Release Compatibility
Created with R2009b
Compatible with any release
Platform Compatibility
Windows macOS Linux
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Version Published Release Notes
1.4.0.0

Better check for input parameters.
1.3.0.0

Handles non-equidistant x_data now
1.2.0.0

Small speed improvements
1.0.0.0