INELLIPSE is the jOceans module of jLab.

 INELLIPSE  Locates points on the interior of ellipses.
    INELLIPSE(Z,KAPPA,LAMBDA,THETA,ZO) where Z is a complex-valued
    location Z=X+iY, and KAPPA, LAMBDA, THETA describe an ellipse at 
    complex-valued position ZO=XO+iYO, is true if Z is inside the ellipse.
    KAPPA is the ellipse amplitude, LAMBDA is the linearity, and THETA is
    the orientation of the major axis with respect to the X-axis.
    KAPPA and LAMBDA are related to the semi-axis lengths A and B by 
    KAPPA^2=(A^2+B^2)/2 and LAMBDA=(A^2-B^2)/(A^2+B^2).  For details, see 
    Lilly and Gascard (2006). 
    Array or matrix input
    BOOL=INELLIPSE(Z,KAPPA,LAMBDA,THETA,ZO), where Z is a length M *row*
    vector, and the other input variables are length N *row* vector, 
    returns an M x N boolean matrix BOOL.  
    In this case the (m,n)th entry of BOOL is true if the mth location Z
    is inside the mth ellipse.
    If the input variables have the same number of multiple *rows*, say K, 
    this is interpreted as corresponding to K different time.  In this case
    BOOL will be a 3D array with dimensions M x N x K.  
    'inellipse --f' generates sample figure.
    Usage: bool=inellipse(z,kappa,lambda,theta,zo);
    This is part of JLAB --- type 'help jlab' for more information
    (C) 2014--2015 J.M. Lilly --- type 'help jlab_license' for details

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