Watershed.Order2-methods: S4 Method for Function 'Watershed.Order2'

In Watersheds: Spatial Watershed Aggregation and Spatial Drainage Network Analysis

Description

S4 Method for function Watershed.Order2. Definition of the tributary zhyd watersheds of the current zhyd watershed.

Value

The method returns a list of 2 objects:

c2	An object with the output of the method Watershed.Order of length 11 for one of the points of node_trib. The properties of the greater tributary watershed of the current zhyd watershed.
c3	An object with the output of the method Watershed.Order of length 11 for the other points of node_trib. The properties of the second tributary watershed of the current zhyd watershed.

Methods

signature(watershed = "Watershed")

The method takes the objec of class Watershed when object node_trib is length 2. The method identifies the zhyd watershed that contaions the current station (class SpatialPoints) and apply the method Watershed.Order on each point of node_trib returning a list of objects Watershed.Order. The computation is done via parallel processes for optimizing and take advance of multicore functionalities.

See Also

See Also the class Watershed and the methods Watershed.Order and Watershed.Tributary.

Examples

library(Watersheds)
data(WatershedsData)

station1 = WatershedsData$station
subbasin1 = WatershedsData$subbasin
zhyd1 = WatershedsData$zhyd
river1 = WatershedsData$river
node1 = WatershedsData$node	

station1 = SpatialPoints(coords=cbind(4328650,3174450), 
	proj4string=slot(subbasin1,"proj4string"))
watershed = new("Watershed",station=station1,subbasin=subbasin1,
	zhyd=zhyd1,river=river1,c1=subbasin1,node=node1)

a = Watershed.Order(watershed)
c1 = a[[1]]
node_trib = a[[6]]
c1_river = a[[10]]

nt = node_trib
sb = subbasin1
z1 = zhyd1
r1 = river1
n1 = node1

watershed2 = new("Watershed", station=nt, subbasin=sb, zhyd=z1, river=r1, c1=c1,node=n1)
c23 = Watershed.Order2(watershed2)
c2 = c23[[1]]
c3 = c23[[2]]	

c2.0 = c2[[1]]
c2_inlet = c2[[2]]
c2_outlet = c2[[3]]
c2.1 = c2[[4]]
c2.2 = c2[[5]]
c2_node_trib = c2[[6]]
c2_sb1 = c2[[7]]
c2_riverIO = c2[[8]]
c2_nodeIO = c2[[9]]			
c2_river = c2[[10]]
c2_node = c2[[11]]	
		
c3.0 = c3[[1]]
c3_inlet = c3[[2]]
c3_outlet = c3[[3]]
c3.1 = c3[[4]]
c3.2 = c3[[5]]
c3_node_trib = c3[[6]]
c3_sb1 = c3[[7]]
c3_riverIO = c3[[8]]
c3_nodeIO = c3[[9]]			
c3_river = c3[[10]]
c3_node = c3[[11]]	

# subsetting river networks
id = list(gIntersects(c2.1, WatershedsData$river,byid=TRUE))
c21_river = SpDF_Subset(id,WatershedsData$river)

id = list(gIntersects(c2.2, WatershedsData$river,byid=TRUE))
c22_river = SpDF_Subset(id,WatershedsData$river)

id = list(gIntersects(c3.1, WatershedsData$river,byid=TRUE))
c31_river = SpDF_Subset(id,WatershedsData$river)

id = list(gIntersects(c3.2, WatershedsData$river,byid=TRUE))
c32_river = SpDF_Subset(id,WatershedsData$river)


# plots
bbox1 = slot(c3.2, "bbox")
bbox = matrix(0,2,2)
bbox[,1] = bbox1[,1]*.995
bbox[,2] = bbox1[,2]*1.005
						
plot(c1, col="gray50", xlim=bbox[1,], ylim=bbox[2,])	
plot(c2.0, col = "gray95", add=TRUE)
plot(c3.0, col="gray79", add=TRUE)
plot(c2.1, col="gray78", add=TRUE)
plot(c2.2, col="gray85", add=TRUE)
plot(c3.1, col="gray53", add=TRUE)
plot(c3.2, col="gray63", add=TRUE)

plot(c1_river, col="blue",add=TRUE)		
plot(c2_river, col="blue",add=TRUE)		
plot(c3_river, col="blue",add=TRUE)			
plot(c21_river, col="blue",add=TRUE)			
plot(c22_river, col="blue",add=TRUE)			
plot(c31_river, col="blue",add=TRUE)			
plot(c32_river, col="blue",add=TRUE)

Watersheds documentation built on May 2, 2019, 12:10 p.m.