fConvol: fConvol

In tommasojulitta/FieldSpectroscopyDP: R package for processing fieldspectroscopy data

Description

Function to compute the statistics (mean, median, and standard deviation) of a spectrum given a certain spectral range

Usage

fConvol(Wl = wl, Wl_start = wl[1], Wl_end = wl[length(wl)], Ref = Ref, 


    fun = "mean")

Arguments

Wl	numeric array: wavelenghts spectrometer
Wl_start	First wavelenght of the spectral range. By default wl[1]
Wl_end	Last wavelenght of the spectral range. By default last element of the array wl
Ref	numeric array: Reflectance
fun	character. statistics to compute (mean, sd, median). By default mean

Value

data frame with mean and standard deviation in the spectral range Wl_start - Wl_end

Author(s)

Tommaso Julitta, Mirco Migliavacca, Thomas Wutzler

Examples

data("reflOO")


# Select starting wavelenght


Wl_start<-600


# Select last wavelenght


Wl_end<-650


#extract the mean and sd value


res<-fConvol(reflOO$Wl, Wl_start=Wl_start, Wl_end=Wl_end, reflOO$Ref)


#Plot results


plot(reflOO$Wl, reflOO$Ref, ylim=c(0,0.7),xlim=c(400,900), type="l",xlab = "Wl [nm]", ylab= "Reflectance [-]")


points(mean(c(Wl_start,Wl_end)), res$mean, col="red")


legend("topleft",col=c("red"),pch=1,cex=1.2,legend=c("Mean value"),box.col="white")


box()

tommasojulitta/FieldSpectroscopyDP documentation built on March 12, 2020, 1:42 p.m.