Newer
Older
needs_layer <- function(db, layer) {
if(file.exists(db)) {
layers <- st_layers(db)
if(layer %in% layers$name)
return(FALSE)
}
TRUE
}
layer_exists <- function(db, layer) {
if(file.exists(db)) {
layers <- st_layers(db)
if(layer %in% layers$name)
return(TRUE)
}
FALSE
}
Bock, Andy
committed
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
# Subset NHD RDS by hydrologic region
VPU_Subset <- function(VPU){
# Read in COMIDs of outlets
RegOutlets <- jsonlite::read_json(file.path("cache", "RegOutlets.json"))
print (paste0("subsetting for VPU ",VPU))
if (!VPU %in% names(RegOutlets)){
# For regions that terminate to the NHDPlus domain
# 1,2,3,4,8,9,12,15,17,18
# Read in NHDPlusV2 flowline simple features and filter by vector processing unit (VPU)
nhd <- readRDS(staged_nhd$flowline) %>%
filter(grepl(paste0("^",VPU,".*"), .data$VPUID))
keep <- prepare_nhdplus(nhd, 5, 2, 10, FALSE)
nhd <- filter(nhd, COMID %in% keep$COMID)
} else if (VPU %in% c("05", "06", "07", "07", "10U","r14")){
# Subset VPUs that are single outlet
outlet <- RegOutlets[VPU]
#print (outlet)
nhd <- readRDS(staged_nhd$flowline)
#nhd_US <- get_UT(nhd, outlet)
nhd <- nhd %>% filter(COMID %in% unlist(get_UT(nhd, outlet)))
keep <- prepare_nhdplus(nhd, 5, 2, 10, FALSE)
nhd <- filter(nhd, COMID %in% keep$COMID)
} else if (VPU == "10L"){
# Subset by flowlines in Region 10
nhd <- readRDS(staged_nhd$flowline) %>%
filter(grepl(paste0("^",substr(VPU,1,2),".*"), .data$VPUID)) # take out this VPUID
# R10U upstream
nhd_US_10U <- nhd %>% filter(COMID %in% unlist(get_UT(nhd, RegOutlets["10U"])))
# R10L upstream
nhd_US_10L <- nhd %>% filter(COMID %in% unlist(get_UT(nhd, RegOutlets["10L"])))
nhd_10L <- nhd_US_10L %>% filter(!COMID %in% nhd_US_10U$COMID)
keep <- prepare_nhdplus(nhd_10L, 5, 2, 10, FALSE)
nhd <- filter(nhd, COMID %in% keep$COMID)
} else {
outlets <- unlist(RegOutlets[VPU])
nhd <- readRDS(staged_nhd$flowline)
#outlets <- c(14320629, 941140164, 15334434)
for (out in outlets){
#print (out)
nhd_US <- get_UT(nhd, out)
keep <- prepare_nhdplus(nhd %>% filter(COMID %in% unlist(nhd_US)), 5, 2, 10, FALSE)
#print (dim(keep))
ifelse( exists("final") , final <- rbind(final, keep), final <- keep)
}
nhd <- nhd %>% filter(COMID %in% final$COMID)
}
return (nhd)
Bock, Andy
committed
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
Merge_hydReg <- function(feat){
out_gpkg <-"cache/GF_CONUS.gpkg"
feat_01 <- read_sf("cache/GF_01.gpkg", paste0(feat,"_01"))
feat_02 <- read_sf("cache/GF_02.gpkg", paste0(feat,"_02"))
feat_03 <- read_sf("cache/GF_03.gpkg", paste0(feat,"_03"))
feat_04 <- read_sf("cache/GF_04.gpkg", paste0(feat,"_04"))
feat_05 <- read_sf("cache/GF_05.gpkg", paste0(feat,"_05"))
feat_06 <- read_sf("cache/GF_06.gpkg", paste0(feat,"_06"))
feat_07 <- read_sf("cache/GF_07.gpkg", paste0(feat,"_07"))
feat_08 <- read_sf("cache/GF_08.gpkg", paste0(feat,"_08"))
feat_09 <- read_sf("cache/GF_09.gpkg", paste0(feat,"_09"))
feat_10U <- read_sf("cache/GF_10L.gpkg", paste0(feat,"_10"))
feat_10L <- read_sf("cache/GF_10U.gpkg", paste0(feat,"_10"))
feat_11 <- read_sf("cache/GF_11.gpkg", paste0(feat,"_11"))
feat_12 <- read_sf("cache/GF_12.gpkg", paste0(feat,"_12"))
feat_13 <- read_sf("cache/GF_13.gpkg", paste0(feat,"_13"))
feat_14 <- read_sf("cache/GF_14.gpkg", paste0(feat,"_14"))
feat_15 <- read_sf("cache/GF_15.gpkg", paste0(feat,"_15"))
feat_16 <- read_sf("cache/GF_16.gpkg", paste0(feat,"_16"))
feat_17 <- read_sf("cache/GF_17.gpkg", paste0(feat,"_17"))
feat_18 <- read_sf("cache/GF_18.gpkg", paste0(feat,"_18"))
allfeat <- list(feat_01, feat_02, feat_03, feat_04, feat_05, feat_06, feat_07, feat_08, feat_09,
feat_10L, feat_10U, feat_11, feat_12, feat_13, feat_14, feat_15, feat_16, feat_17,
feat_18)
all_sf<-do.call(rbind, allfeat)
write_sf(all_sf, out_gpkg, feat)
}