Description Usage Arguments Value Note See Also Examples

View source: R/insert.hinges.r

Inserting wavelengths values immediately before and after a discontinuity in the SWF, greatly reduces the errors caused by interpolating the weighted irradiance during integration of the effective spectral irradiance. This is specially true when data have a large wavelength step size.

1 | ```
insert_hinges(x, y, h)
``` |

`x` |
numeric vector (sorted in increasing order) |

`y` |
numeric vector |

`h` |
a numeric vector giving the wavelengths at which the y values should be inserted by interpolation, no interpolation is indicated by an empty vector (numeric(0)) |

a data.frame with variables `x`

and `y`

. Unless the hinge
values were already present in `y`

, each inserted hinge, expands the
vectors returned in the data frame by one value.

Insertion is a costly operation but I have tried to optimize this function as much as possible by avoiding loops. Earlier this function was implemented in C++, but a bug was discovered and I have now rewritten it using R.

Other low-level functions operating on numeric vectors.: `as_energy`

,
`as_quantum_mol`

,
`calc_multipliers`

,
`div_spectra`

,
`energy_irradiance`

,
`energy_ratio`

, `integrate_xy`

,
`interpolate_spectrum`

,
`irradiance`

, `l_insert_hinges`

,
`oper_spectra`

,
`photon_irradiance`

,
`photon_ratio`

,
`photons_energy_ratio`

,
`prod_spectra`

, `s_e_irrad2rgb`

,
`split_energy_irradiance`

,
`split_photon_irradiance`

,
`subt_spectra`

, `sum_spectra`

,
`trim_tails`

, `v_insert_hinges`

1 2 3 | ```
with(sun.data,
insert_hinges(w.length, s.e.irrad,
c(399.99, 400.00, 699.99, 700.00)))
``` |

photobiology documentation built on April 3, 2018, 1:06 a.m.

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