parse_fluorimeter_output: parse_fluorimeter_output

Description Usage Arguments Details Value Author(s) See Also Examples

View source: R/parse_fluorimeter_output.R

Description

Parse fluorimeter spectra

Usage

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parse_fluorimeter_output(spec_file = NULL, adjust = TRUE,
  file_type = c("auto", "FelixGXv4.1.0.3096", "Felix32v1.20", "manual"))

Arguments

spec_file

Path to a ‘*.txt’ file as a character object.

adjust

A logical indicating of whether (default) or not acquisition time should be reset to have 0 (zero) coincide with the addition of dithionite (see 'Details' section).

file_type

A string specifying whether or the file was created using Felix GX or Felix 32 or is a "manual" tab delimited file.

Details

A function to read fluorimeter output directly. Intended as a helper function to scramblase activity determinations from dithionite assays.

The function is currently capable to deal with input derived from QuantaMaster instruments (Photon Technology International, Inc., Edison, New Jersey)running software versions FelixGX v4.1 (see parse_felix_gx_output) and Felix32 v1.20 (see parse_felix_32_output). The format used in a given file is divined from the data structure and appropriate internal parsing functions are called.

If requested the time point of dithionite addition to a sample is determined using wmtsa-supplied methodology and the acquisition time reset accordingly (0 henceforth corresponds to the time of addition).

Value

A data frame with two columns:

Time.in.sec

Numeric. Number of seconds since the start of experiment.

Fluorescence.Intensity

Numeric. Intensity of fluorescence (relative scale, no official unit).

For Felix GX, if the file contains the information, the return value will also have anattribute WavelengthsInNanometres, which contains the excitation and emission wavelengths.

Author(s)

Johannes Graumann

See Also

scramblase_assay_input_validation, parse_felix_gx_output, parse_felix_32_output, parse_manual_output

Examples

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library(magrittr)
# Extract example data
analysis_dir <- file.path(tempdir(), "flippant-case-study")
fluor_file <- extract_case_study_data(analysis_dir, "wildtypeEx1_0.txt")
# Parse an exemplary file
parse_fluorimeter_output(fluor_file) %>%
  str()

flippant documentation built on May 1, 2019, 8:22 p.m.