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#' @rdname adj_wave | ||
#' @title Adjust wavelength to wavenumbers for Raman | ||
#' | ||
#' @description | ||
#' Functions for converting between wave* units. | ||
#' | ||
#' @return | ||
#' An \code{OpenSpecy} object with new units converted from wavelength | ||
#' to wavenumbers or a vector with the same conversion. | ||
#' | ||
#' @examples | ||
#' data("raman_hdpe") | ||
#' raman_wavelength <- raman_hdpe | ||
#' raman_wavelength$wavenumber <- (-1*(raman_wavelength$wavenumber/10^7-1/530))^(-1) | ||
#' adj_wave(raman_wavelength, laser = 530) | ||
#' adj_wave(raman_wavelength$wavenumber, laser = 530) | ||
#' | ||
#' @param x an \code{OpenSpecy} object with wavenumber units specified as | ||
#' wavelength in nm or a wavelength vector. | ||
#' @param laser the wavelength in nm of the Raman laser. | ||
#' @param \ldots additional arguments passed to submethods. | ||
#' | ||
#' @author | ||
#' Win Cowger, Zacharias Steinmetz | ||
#' | ||
#' @export | ||
adj_wave <- function(x, ...) { | ||
UseMethod("adj_wave") | ||
} | ||
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#' @rdname adj_wave | ||
#' | ||
#' @export | ||
adj_wave.default <- function(x, laser, ...) { | ||
10^7*(1/laser - 1/x) | ||
} | ||
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#' @rdname adj_wave | ||
#' | ||
#' @export | ||
adj_wave.OpenSpecy <- function(x, laser, ...) { | ||
x$wavenumber <- adj_wave(x$wavenumber, laser) | ||
return(x) | ||
} |
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data("raman_hdpe") | ||
raman_wavelength <- raman_hdpe | ||
raman_wavelength$wavenumber <- (-1*(raman_wavelength$wavenumber/10^7-1/530))^(-1) | ||
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test_that("adj_wave() handles input errors and inputs correctly", { | ||
adj_wave(1:1000) |> expect_error() | ||
adj_wave(raman_wavelength, laser = 530) |> expect_silent() | ||
adj_wave(raman_wavelength$wavenumber, laser = 530) |> expect_silent() | ||
#identical with different structured inputs. | ||
expect_identical(adj_wave(raman_wavelength, laser = 530)$wavenumber, | ||
adj_wave(raman_wavelength$wavenumber, laser = 530)) | ||
#expected values. | ||
expect_identical(round(adj_wave(raman_wavelength, laser = 530)$wavenumber)[1:2], c(301,305)) | ||
#minimal shifts in wavenumbers | ||
expect_true(all(abs(round(adj_wave(raman_wavelength, laser = 530)$wavenumber) - round(raman_hdpe$wavenumber))<=1)) | ||
}) | ||
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