|
1
|
# R script for creating a plot of mean elevation profile containing four lines
|
|
2
|
# (aster2, srtm, uncorrected fused, blend gaussian fused) for each nine region
|
|
3
|
# The results (plots) are saved at
|
|
4
|
# "/data/project/organisms/DEM?Yuni/documents/meanElv"
|
|
5
|
#
|
|
6
|
# Original author: Jim Regetz
|
|
7
|
# [13-JUL-2011]
|
|
8
|
# Edits by Yuina to auto-apply for nine regions.
|
|
9
|
#
|
|
10
|
# 9-Dec-2011
|
|
11
|
# Yuina Nunokawa
|
|
12
|
|
|
13
|
|
|
14
|
|
|
15
|
library(raster)
|
|
16
|
|
|
17
|
aster.dir <- "/data/project/organisms/DEM/Yuni/Data/aster2"
|
|
18
|
srtm.dir <- "/data/project/organisms/DEM/Yuni/Data/srtm"
|
|
19
|
aster.straddle <- list.files(aster.dir, pattern="^aster2.*_straddle.tif")
|
|
20
|
srtm.below <- list.files(srtm.dir, pattern="^srtm_.*_below.tif")
|
|
21
|
fused.straddle <- list.files(aster.dir, pattern="^fused.*_straddle.tif")
|
|
22
|
fused.bgau <- list.files(aster.dir, pattern="^fused.*_blendgau.tif")
|
|
23
|
|
|
24
|
|
|
25
|
|
|
26
|
mElevation <- function(d.aster2, d.srtm, d.uncor2, d.bg2, file.name, ylim, aster.dir, srtm.dir){
|
|
27
|
|
|
28
|
# extract raster latitudes for later
|
|
29
|
lats2400 <- yFromRow(d.aster2, 1:nrow(d.aster2))
|
|
30
|
lats1200 <- yFromRow(d.srtm, 1:nrow(d.srtm))
|
|
31
|
|
|
32
|
# initialize output pdf device driver
|
|
33
|
name <- paste("mElevation_", file.name, ".pdf", sep="")
|
|
34
|
pdf(file.path("/data/project/organisms/DEM/Yuni/documents/meanElv", file=name), height=8, width=11.5)
|
|
35
|
|
|
36
|
par(mfrow=c(2,2), omi=c(1,1,1,1))
|
|
37
|
ylim <- ylim
|
|
38
|
|
|
39
|
# plot latitudinal profiles of mean elevation for aster2 and srtm
|
|
40
|
plot(lats2400, rowMeans(as.matrix(d.aster2), na.rm=TRUE), type="l",
|
|
41
|
xlab="Latitude", ylab="Mean elevation", ylim=ylim)
|
|
42
|
text(min(lats1200), min(ylim)+0.5, pos=4, font=3, labels="AGDEM2")
|
|
43
|
lines(lats1200, rowMeans(as.matrix(d.srtm), na.rm=TRUE), col="blue")
|
|
44
|
legend("bottomright", legend=c("SRTM", "ASTER2"), col=c("blue",
|
|
45
|
"black"), lty=c(1, 1), bty="n")
|
|
46
|
abline(v=60, col="red", lty=2)
|
|
47
|
mtext(expression(paste("Latitudinal profiles of mean elevation", file.name)), adj=0, line=2, font=2)
|
|
48
|
|
|
49
|
|
|
50
|
# plot latitudial profiles of mean elevation for Uncorrected fused and blend gaussian fused
|
|
51
|
plot(lats2400, rowMeans(as.matrix(d.uncor2), na.rm=TRUE), type="l",
|
|
52
|
xlab="Latitude", ylab="Mean elevation", ylim=ylim)
|
|
53
|
text(min(lats2400), min(ylim)+0.5, pos=4, font=3, labels="simple fuse and gaussian")
|
|
54
|
lines(lats2400, rowMeans(as.matrix(d.bg2), na.rm=TRUE), col="red")
|
|
55
|
legend("bottomright", legend=c("Simple Fused", "Gaussian Blend"), col=c("black","red"), lty=c(1, 1), bty="n")
|
|
56
|
abline(v=60, col="red", lty=2)
|
|
57
|
dev.off ()
|
|
58
|
|
|
59
|
}
|
|
60
|
|
|
61
|
|
|
62
|
|
|
63
|
|
|
64
|
|
|
65
|
num.regions <- 9
|
|
66
|
plotElevation <-lapply(1:num.regions, function(region, aster.dir, srtm.dir){
|
|
67
|
d.aster2 <- raster(file.path(aster.dir, aster.straddle[region]))
|
|
68
|
d.srtm <- raster(file.path(srtm.dir, srtm.below[region]))
|
|
69
|
d.uncor2 <- raster(file.path(aster.dir, fused.straddle[region]))
|
|
70
|
d.bg2 <- raster(file.path(aster.dir, fused.bgau[region]))
|
|
71
|
file.name <- substr(srtm.below[region], 6, 13)
|
|
72
|
|
|
73
|
if (region==1){
|
|
74
|
ylim <- c(120, 150)
|
|
75
|
}else if(region==2){
|
|
76
|
ylim <- c(140, 175)
|
|
77
|
}else if (region==3){
|
|
78
|
ylim <- c(350, 550)
|
|
79
|
}else if (region==4){
|
|
80
|
ylim <-c(50, 450)
|
|
81
|
}else if (region==5){
|
|
82
|
ylim <- c(60, 200)
|
|
83
|
}else if (region==6){
|
|
84
|
ylim <- c(0, 90)
|
|
85
|
}else if (region==7){
|
|
86
|
ylim <- c(60, 100)
|
|
87
|
}else if (region==8){
|
|
88
|
ylim <- c(600, 750)
|
|
89
|
}else{
|
|
90
|
ylim <- c(30, 280)
|
|
91
|
}
|
|
92
|
|
|
93
|
mElevation(d.aster2, d.srtm, d.uncor2, d.bg2, file.name, ylim, aster.dir, srtm.dir)
|
|
94
|
}, aster.dir=aster.dir, srtm.dir=srtm.dir)
|
|
95
|
|
