Single-variable linear level finding ("inverse" INTERP1): findX

Versión 1.1.0.0 (1,73 KB) por Antoni J. Canós
Estimates the XI values at which the dependent variables Y reach a specified level YI.
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XI = findX(X,Y,YI) estimates the XI values at which the dependent
variables Y reach or cross a specified target level YI (scalar value). If there are multiple solutions, findX finds all of them. It may be seen as the "inverse" operation of the MATLAB's function
INTERP1, under 'linear' method.

X is a vector containing a sequence of monotone increasing values of the independent variable. Y is a vector containing the discrete values of the dependent variable (underlying function).

[XI,IDEXACT] = findX(X,Y,YI) returns in IDEXACT the indices where the original values of Y exactly reach the target level YI, i.e. Y(IDEXACT)=YI, so interpolation was not needed.

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Antoni J. Canós (2024). Single-variable linear level finding ("inverse" INTERP1): findX (https://www.mathworks.com/matlabcentral/fileexchange/23860-single-variable-linear-level-finding-inverse-interp1-findx), MATLAB Central File Exchange. Recuperado .

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Se creó con R13
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Versión Publicado Notas de la versión
1.1.0.0

Important bug fixed. New features added. Help rewritten.
1.0.0.0