I am trying to generate random points on a polygon with each having a separate ID number and then converting to a raster for subsequent use in Circuitscape. For some reason “Rasterize” function seems to change its treatment of the point values each time and some get repeated and some are lost. Please any advice. Thank you. Carlos

Raster and identically shaped polygon are stored here

https://github.com/carlosbedson/ENGLAND-RASTER-AND-SHAPEFILE

ENGLAND.RASTER<-rast(“C:/CIRCUITSCAPE.ENGLAND.CC.240626/ENGLAND.RASTER.asc”)

ENGLAND.POLYGON <- st_read(“C:/ARCGIS_NE/ENGLAND_EXTENT/ENGLAND_POLYGON.shp”) # ENGLAND SINGLE POLYGON ONLY

ENGLAND.POLYGON<-st_cast(ENGLAND.POLYGON, “MULTILINESTRING”) # TO MULTIINE STRING

ENGLAND.POLYGON.NODES<-st_sample(ENGLAND.POLYGON, 10, type=”regular”) # SAMPLE

NODES.NUMBERS<- as.numeric(seq(from = 1, to = 10, by = 1)) # AS VECTOR

ENGLAND.POLYGON.NODES<-merge(ENGLAND.POLYGON.NODES, NODES.NUMBERS) # BECOMES DATAFRAME

ENGLAND.POLYGON.NODES<-st_sf(ENGLAND.POLYGON.NODES)# WORKS BECOMES SF MULTIPOINT OBJECT AND DF

ENGLAND.POLYGON.NODES<-vect(ENGLAND.POLYGON.NODES) # BECOMES SPATVEC

ENGLAND.POLYGON.NODES.RASTER<-rasterize(ENGLAND.POLYGON.NODES, ENGLAND.RASTER, “y”)

freq(ENGLAND.POLYGON.NODES.RASTER) # RESULTS HAVE LOST THE SEQUENCE FROM 1 TO 10

plot(ENGLAND.POLYGON.NODES.RASTER) # DOES NOT PLOT ANYTHING NOT SURE WHY

plot(ENGLAND.RASTER) # PLOTS THE RASTER

points(ENGLAND.POLYGON.NODES, cex=2, pch=16, col=rainbow(10)) # PLOTS TEN POINTS BUT DOES NOT SHOW SOME HAVE DUPLICATE IDS