I'm using RSAGA (version 0.9-4) to calculate rate of change (slope) on a
series of .asc files. I'm getting en error message saying it can't open the
grid. My code follows:
library(RSAGA)
# data directory containing my .asc files to calculate slope on
wd.in<-"C:\\my.data.dir"
setwd(wd.in)
env<-rsaga.env(path="C:\\programs\\saga_vc", cmd="saga_cmd.exe")
asc.list<-dir(wd.in, pattern='.asc$')
for (i in asc.list) {
read.ascii.grid(i)
rsaga.esri.wrapper(fun=rsaga.slope, in.dem=i, method="maxslope",
in.esri=T, out.esri=T, clean.up=T,
out.slope=c(paste("SLOPE",as.character(i),sep="")), env=env,
esri.workspace=wd.in, format="ascii", georef="corner", prec=1)
}
Here are some of the data files in my directory from my asc.list object
above:
asc.list
[1] "tmp1_220E-15N2005-03-02.asc" "tmp10_220E-15N2005-05-13.asc"
"tmp100_220E-15N2007-05-13.asc" "tmp101_220E-15N2007-05-21.asc"
[5] "tmp102_220E-15N2007-05-29.asc" "tmp103_220E-15N2007-06-06.asc"
"tmp104_220E-15N2007-06-14.asc" "tmp105_220E-15N2007-06-22.asc"
The error I'm getting is below:
SAGA CMD 2.0.3
library path: C:\programs\saga_vc/modules
library name: ta_morphometry
module name : Local Morphometry
author : (c) 2001 by O.Conrad
Load grid: tmp1_220E-15N2005-03-02.asc...
failed
error: Grid file could not be opened.
error: input file [tmp1_220E-15N2005-03-02.asc]
error: executing module [Local Morphometry]
Not sure what I've done wrong in calling in the grid files and would
appreciate advice.
Best regards,
Tim Sippel
University of Auckland
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