|
1
|
#
|
|
2
|
# informal concordance analysis of flow accumulation in the 60N boundary
|
|
3
|
# region of Canada
|
|
4
|
#
|
|
5
|
# Jim Regetz
|
|
6
|
# NCEAS
|
|
7
|
# Created on 17-Jun-2011
|
|
8
|
|
|
9
|
# data directory (local to xander)
|
|
10
|
datadir <- "~/media/temp/dem/new/flow"
|
|
11
|
|
|
12
|
# load flow direction rasters produced by terraflow (mfd)
|
|
13
|
# Canadian DEM
|
|
14
|
fl.can <- raster(file.path(datadir, "flowdir_small.tif"))
|
|
15
|
# uncorrected fused srtm/aster
|
|
16
|
fl.uncor <- raster(file.path(datadir, "flowdir_smc.tif"))
|
|
17
|
# gaussian blended srtm/aster
|
|
18
|
fl.bg <- raster(file.path(datadir, "flowdir_smbg.tif"))
|
|
19
|
|
|
20
|
# plot cross-latitude profile of mean direction
|
|
21
|
lats <- yFromRow(fl.uncor, 1:nrow(fl.uncor))
|
|
22
|
plot(lats, rowMeans(as.matrix(fl.uncor), na.rm=TRUE), type="l", lwd=2)
|
|
23
|
lines(lats, rowMeans(as.matrix(fl.bg), na.rm=TRUE), col="red")
|
|
24
|
lines(lats, rowMeans(as.matrix(fl.can), na.rm=TRUE), col="blue")
|
|
25
|
plot(lats, rowMeans(as.matrix(fl.bg==fl.can), na.rm=TRUE), col="red")
|
|
26
|
|
|
27
|
|
