Description Usage Arguments Value Author(s) Examples

Given the values and lefthand endpoints for intervals of constancy, lookup values of the function at arbitrary values of the independent variable.

1 | ```
lookup(xgrid, ygrid, x, y0 = 0)
``` |

`xgrid` |
Lefthand endpoints of intervals of constancy |

`ygrid` |
Values on these intervals, of same length as |

`x` |
Input vector of arbitrary independent variables. |

`y0` |
Value to be returned for values of |

~Describe the value returned If it is a LIST, use

`comp1 ` |
Description of 'comp1' |

`comp2 ` |
Description of 'comp2' |

Grant Izmirlian <izmirlian@nih.gov>

1 | ```
## none as yet
``` |

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