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Generate Spectral Response Function from Full Width at Half Maximum (FWHM)

get.srf.from_fwhm.Rd

This function generates a spectral response function based on a Gaussian distribution, which is defined by the center wavelength and standard deviation (sd). A normalization based on the maximum (max) value is applied. The sensors considered in this function include:

  • Sentinel2a and Sentinel2b: For these sensors, the function uses the spectral response data stored in ToolsRTM::str.sentinel2a and ToolsRTM::str.sentinel2b, respectively. These datasets provide the necessary characteristics to accurately model their spectral responses.

  • PRISMA: The function utilizes the original resampling function for PRISMA, with the spectral response characteristics stored in ToolsRTM::srf.prisma. This allows for precise calculations based on the unique properties of the PRISMA sensor.

  • Other sensors (e.g., ALI, Hyperion, Landsat4-8, MODIS, Quickbird, RapidEye, WorldView2-4, WorldView2-8) use the Full Width at Half Maximum (FWHM) function for their spectral response calculations, based on their respective characteristics.

Usage

get.srf.from_fwhm(sensor = "", save = T, path.out, get.plot = FALSE)

Arguments

sensor

A string specifying the sensor name. Options include: "ALI", "Hyperion", "Landsat4", "Landsat5", "Landsat7", "Landsat8", "MODIS", "Quickbird", "RapidEye", "Sentinel2a", "Sentinel2b", "WorldView2-4", "WorldView2-8".

save

Logical indicating whether to save SRF file (default is TRUE).

path.out

A string specifying the output path for the CSV files.

get.plot

Logical indicating whether to plot the spectral response curves (default is FALSE).

Value

A data frame containing the spectral response functions.

Examples

if (FALSE) { # \dontrun{
# Generate spectral response function for Sentinel-2b
srf.matrix <- get.srf.from_fwhm(sensor = "Sentinel2b", save=T, path.out = "Tables", get.plot = TRUE)

} # }