BiLinInterp() function |

**BiLinInterp() function**

**BiLinInterp(argument list…)**

This function returns the bilinearly interpolated value of z=f(x,y). The function uses the following arguments:

Argument |
Description |
Restrictions |

x |
the value of x for which we wish to determine the value of z = f(x,y) | must be within the domain of xvec, that is: min(xvec) <= x <= max(xvec) |

y |
the value of y for which we wish to determine the value of z = f(x,y) | must be within the domain of yvec, that is: min(yvec) <= y <= max(yvec) |

xvec |
a row vector (or array) of known x values | must be in strictly ascending order |

yvec |
a column vector (or array) of known y values | must be in strictly ascending order |

zmatrix |
a matrix of known values of z = f(x,y) | if xvec is N elements in size, and yvec is M elements in size, then zmatrix must be M rows by N columns |

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