rPAex (version 1.0.1)

externalPoint: Information Outside the Experimental Plot

Description

Pixels with information outside the experimental plot under study. The environment outside the study area is important for its explanation of the experimental response.

Usage

externalPoint(models,R)

Value

outpoints

coordenate matrix

Arguments

models

list regression linear models, output borderPoint function

R

Raster image

Author

Felipe de Mendiburu

Details

out points

See Also

borderPoint, fixedPoint, fourPoint, imageField, designRaster, movePlot

Examples

library(rPAex)
#
# for image "tiff" format, see rPAex document
# r <- fileRaster(tiff)
#
crop <- system.file("external/corn.csv", package="rPAex")
s<-read.csv(crop,header = TRUE)
r <- raster::rasterFromXYZ(s)
raster::image(r,useRaster=FALSE,main="Corn crop\nArea outside the experimental plot")
#P<-locator(3)
P<-list(x=c(287705.9, 287711.8, 287712.8),y=c(8664203.15, 8664204.8, 8664193.67))
Q<-fourPoint(P)
polygon(Q,border = "blue")
text(Q)
models<-borderPoint(Q)
out<-externalPoint(models,r)
points(out[,1],out[,2],pch=".")

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