Yes: SAGA runs normally on Linux (I use it also), but you can not use the command line from R (i.e. RSAGA) to pass command to SAGA :(
But you can use R to pass command lines to SAGA without RSAGA (i.e. the batch files): http://saga-gis.wiki.sourceforge.net/Executing+Modules+with+SAGA+CMD Tom Hengl http://spatial-analyst.net > -----Original Message----- > From: Thomas Adams [mailto:thomas.ad...@noaa.gov] > Sent: Friday, July 10, 2009 4:20 PM > To: Tomislav Hengl > Cc: r-sig-geo@stat.math.ethz.ch > Subject: Re: [R-sig-Geo] Slope and Aspect calculations in R > > Tom, > > Thanks! I have seen your posts and results of some of your work with > SAGA and I am very interested. But, I have been to lazy to this point to > try compiling SAGA for either MacOS X or Linux (is a Linux distribution > available?). > > Regards, > Tom > > Tomislav Hengl wrote: > > Dear Josh, Thomas, > > > > I typically use R+SAGA (R on top!) for such type of analysis (and I do have > > access to all > operating > > system/software). There must be some good reasons that I am using SAGA > > (speed, stability, rich > > geomorphometry module etc.)! So do not give up so easy on SAGA. > > > > I especially like that SAGA is fairly efficient in processing big grids, > > and the commands are > rather > > compact. For example to reproject grids from one to another proj4string, > > you only need to set > e.g.: > > > > > >> rsaga.geoprocessor(lib="pj_proj4", 2, param=list(SOURCE_PROJ=paste('"', > >> proj4string(dem25m), > '"', > >> > > sep=""), TARGET_PROJ="\"+proj=longlat +datum=WGS84\"", SOURCE="TWI.sgrd", > > TARGET="TWI_ll.sgrd", > > TARGET_TYPE=0, INTERPOLATION=0)) > > > > *see http://www.geomorphometry.org/R.asp > > > > I remember that somebody did manage to set-up SAGA also under Mac OS > > (http://www.saga-gis.uni-goettingen.de/html/index.php?module=pnForum&func=viewtopic&topic=458), > but > > I also remember that most of students on our GEOSTAT course used Windows > > under Mac OS to run > SAGA. I > > am sure that it should be possible to compile SAGA under Mac OS, but > > somebody needs to put some > > effort to bridge this gap (check also with Olaf Conrad). > > > > Here is more discussion about the same topic from few months ago: > > https://stat.ethz.ch/pipermail/r-sig-geo/2009-April/005418.html > > > > cheers, > > > > Tom Hengl > > > > > > > >> -----Original Message----- > >> From: r-sig-geo-boun...@stat.math.ethz.ch > >> [mailto:r-sig-geo-boun...@stat.math.ethz.ch] On > Behalf > >> Of Thomas Adams > >> Sent: Friday, July 10, 2009 3:12 PM > >> To: Josh London > >> Cc: r-sig-geo@stat.math.ethz.ch > >> Subject: Re: [R-sig-Geo] Slope and Aspect calculations in R > >> > >> Josh, > >> > >> I use R & GRASS together on both MacOS X and Linux without problems. > >> It's very direct to write a shell script that calls both R & GRASS > >> within a single script. Writing a R script that calls GRASS may be more > >> tedious to do what you want. Writing a shell script that calls both may > >> be the wat to go. > >> > >> Tom > >> > >> Josh London wrote: > >> > >>> Thanks for the suggestions so far regarding the use of GRASS or SAGA. > >>> > >>> We have considered those options but SAGA doesn't appear available for > >>> MacOS. My understanding is that spgrass6 is more for accessing R > >>> code/functions from within GRASS vs accessing GRASS functions from > >>> within R. We have all our other analysis coded up in R, and just need > >>> these functions to do one part of a bigger process. Maybe I'm > >>> misunderstanding how to use R and GRASS together. I'll do some further > >>> research. > >>> > >>> Thanks again > >>> Josh > >>> > >>> Josh London wrote: > >>> > >>>> Hello > >>>> > >>>> We are looking to mimic, in R, the slope (max magnitude difference > >>>> between a cell and its neighbors) and aspect (direction of maximum > >>>> magnitude difference) functions found in ESRI's Spatial Analyst > >>>> package. We were just about to code up the slope function but thought > >>>> I would make sure we weren't re-inventing any wheels already out there. > >>>> > >>>> Thanks > >>>> Josh > >>>> > >>>> > >> -- > >> Thomas E Adams > >> National Weather Service > >> Ohio River Forecast Center > >> 1901 South State Route 134 > >> Wilmington, OH 45177 > >> > >> EMAIL: thomas.ad...@noaa.gov > >> > >> VOICE: 937-383-0528 > >> FAX: 937-383-0033 > >> > >> _______________________________________________ > >> R-sig-Geo mailing list > >> R-sig-Geo@stat.math.ethz.ch > >> https://stat.ethz.ch/mailman/listinfo/r-sig-geo > >> > > > > _______________________________________________ > > R-sig-Geo mailing list > > R-sig-Geo@stat.math.ethz.ch > > https://stat.ethz.ch/mailman/listinfo/r-sig-geo > > > > > -- > Thomas E Adams > National Weather Service > Ohio River Forecast Center > 1901 South State Route 134 > Wilmington, OH 45177 > > EMAIL: thomas.ad...@noaa.gov > > VOICE: 937-383-0528 > FAX: 937-383-0033 _______________________________________________ R-sig-Geo mailing list R-sig-Geo@stat.math.ethz.ch https://stat.ethz.ch/mailman/listinfo/r-sig-geo