On Thu, Oct 16, 2008 at 8:23 PM, Alessandro <[EMAIL PROTECTED]>wrote:
> It's Run > > > power<- seq(1.5, 4.0, by=0.1) > for (i in 1:length(power)){ > rsaga.grid.calculus(in.grids = c("DCM_1.sgrd"), > out.grid = paste("DCM_1_power",i,".sgrd",sep=""), > formula = paste("a^",power[i],sep="")) } > > BUT........... > > the only fix is create files with name DCM_1_power15.sgrd, > DCM_1_power1.6.sgrd, etc. etc. > because the code creates files like this: DCM_1_power1.sgrd, > DCM_1_power2.sgrd, etc. etc. > > Alex > > -----Messaggio originale----- > Da: Alexander Brenning [mailto:[EMAIL PROTECTED] > Inviato: giovedì 16 ottobre 2008 18.17 > A: Alessandro > Cc: r-sig-geo@stat.math.ethz.ch > Oggetto: Re: R: [R-sig-Geo] suggestion to write a more elegant code > > how about this... > > power<- seq(1.5, 4.0, by=0.1) > for (i in 1:length(power)){ > rsaga.grid.calculus(in.grids = c("DCM_1.sgrd"), > out.grid = paste("DCM_1_power",i,".sgrd",sep=""), > formula = paste("a^",power[i],sep="")) > } > > > > > Alessandro wrote: > > Hi Thanx Alex and Mike > > > > SORRY I am a brand-new > > > > I tried this formula > > > > > > for (pow in seq(1.5, 4.0, by = 0.1)) > > rsaga.grid.calculus(in.grids = c("DCM_1.sgrd"), > > out.grid = "DCM_1_power15.sgrd", > > formula = paste("a^", pow, sep="")) > > > > but the code create only one raster (DCM_1_power15.sgrd) > > > > with this formula I have this error > > > > power<- seq(1.5, 4.0, by=0.1) > > for (i in 1:length(power)){ > > rsaga.grid.calculus(in.grids = c("DCM_1.sgrd"),out.grid > > =paste("DCM_1_power"power[i]*10,".sgrd",sep=""), formula = ~^power[i]) > > } > > > > ERROR message > > > > > > power<- seq(1.5, 4.0, by=0.1) > >> for (i in 1:length(power)){ > > + rsaga.grid.calculus(in.grids = c("DCM_1.sgrd"),out.grid > > =paste("DCM_1_power"power[i]*10,".sgrd",sep=""), formula = ~^power[i]) > > Errore: unexpected symbol in: > > "for (i in 1:length(power)){ > > rsaga.grid.calculus(in.grids = c("DCM_1.sgrd"),out.grid > > =paste("DCM_1_power"power" > >> } > > Errore: unexpected '}' in "}" > >> > > > > > > > > -----Messaggio originale----- > > Da: Alexander Brenning [mailto:[EMAIL PROTECTED] > > Inviato: giovedì 16 ottobre 2008 17.01 > > A: Alessandro > > Cc: r-sig-geo@stat.math.ethz.ch > > Oggetto: Re: [R-sig-Geo] suggestion to write a more elegant code > > > > Hi, > > > > first, your formulas should read ~a^1.4 etc.; 'a' represents the first > > (and in your case only) grid in in.grids. > > > > Instead of using a formula, you can use a character string: > > formula = "a^1.5" etc., > > so you just have to 'paste' things together; this should work: > > > > for (pow in seq(1.5, 4.0, by = 0.1)) > > rsaga.grid.calculus(in.grids = c("DSM_1.sgrd"), > > out.grid = "DCM_1_power15.sgrd", > > formula = paste("a^", pow, sep="")) > > > > Cheers > > Alex > > > > > > > > Alessandro wrote: > >> Hi all, > >> > >> > >> > >> I need a suggestion to write this code in R more elegant . I have a DSM > >> grid and I need to create a different grid raisin to different power. > >> > >> > >> > >> > >> > >> Thanx Ale > >> > >> > >> > >> rsaga.grid.calculus(in.grids = c("DSM_1.sgrd"),out.grid = > >> "DCM_1_power15.sgrd", formula = ~^1.5) > >> > >> rsaga.grid.calculus(in.grids = c("DSM_1.sgrd"),out.grid = > >> "DCM_1_power16.sgrd", formula = ~^1.6) > >> > >> rsaga.grid.calculus(in.grids = c("DSM_1.sgrd"),out.grid = > >> "DCM_1_power17.sgrd", formula = ~^1.7) > >> > >> rsaga.grid.calculus(in.grids = c("DSM_1.sgrd"),out.grid = > >> "DCM_1_power18.sgrd", formula = ~^1.8) > >> > >> rsaga.grid.calculus(in.grids = c("DSM_1.sgrd"),out.grid = > >> "DCM_1_power19.sgrd", formula = ~^1.9) > >> > >> rsaga.grid.calculus(in.grids = c("DSM_1.sgrd"),out.grid = > >> "DCM_1_power15.sgrd", formula = ~^2.0) > >> > >> rsaga.grid.calculus(in.grids = c("DSM_1.sgrd"),out.grid = > >> "DCM_1_power20.sgrd", formula = ~^2.1) > >> > >> rsaga.grid.calculus(in.grids = c("DSM_1.sgrd"),out.grid = > >> "DCM_1_power15.sgrd", formula = ~^2.2) > >> > >> rsaga.grid.calculus(in.grids = c("DSM_1.sgrd"),out.grid = > >> "DCM_1_power15.sgrd", formula = ~^2.3) > >> > >> rsaga.grid.calculus(in.grids = c("DSM_1.sgrd"),out.grid = > >> "DCM_1_power15.sgrd", formula = ~^2.4) > >> > >> rsaga.grid.calculus(in.grids = c("DSM_1.sgrd"),out.grid = > >> "DCM_1_power15.sgrd", formula = ~^2.5) > >> > >> rsaga.grid.calculus(in.grids = c("DSM_1.sgrd"),out.grid = > >> "DCM_1_power15.sgrd", formula = ~^1.6) > >> > >> rsaga.grid.calculus(in.grids = c("DSM_1.sgrd"),out.grid = > >> "DCM_1_power15.sgrd", formula = ~^2.7) > >> > >> rsaga.grid.calculus(in.grids = c("DSM_1.sgrd"),out.grid = > >> "DCM_1_power15.sgrd", formula = ~^2.8) > >> > >> rsaga.grid.calculus(in.grids = c("DSM_1.sgrd"),out.grid = > >> "DCM_1_power15.sgrd", formula = ~^2.9) > >> > >> rsaga.grid.calculus(in.grids = c("DSM_1.sgrd"),out.grid = > >> "DCM_1_power15.sgrd", formula = ~^3.0) > >> > >> rsaga.grid.calculus(in.grids = c("DSM_1.sgrd"),out.grid = > >> "DCM_1_power15.sgrd", formula = ~^3.1) > >> > >> rsaga.grid.calculus(in.grids = c("DSM_1.sgrd"),out.grid = > >> "DCM_1_power15.sgrd", formula = ~^3.2) > >> > >> rsaga.grid.calculus(in.grids = c("DSM_1.sgrd"),out.grid = > >> "DCM_1_power15.sgrd", formula = ~^3.3) > >> > >> rsaga.grid.calculus(in.grids = c("DSM_1.sgrd"),out.grid = > >> "DCM_1_power15.sgrd", formula = ~^3.4) > >> > >> rsaga.grid.calculus(in.grids = c("DSM_1.sgrd"),out.grid = > >> "DCM_1_power15.sgrd", formula = ~^3.5) > >> > >> rsaga.grid.calculus(in.grids = c("DSM_1.sgrd"),out.grid = > >> "DCM_1_power15.sgrd", formula = ~^3.6) > >> > >> rsaga.grid.calculus(in.grids = c("DSM_1.sgrd"),out.grid = > >> "DCM_1_power15.sgrd", formula = ~^3.7) > >> > >> rsaga.grid.calculus(in.grids = c("DSM_1.sgrd"),out.grid = > >> "DCM_1_power15.sgrd", formula = ~^3.8) > >> > >> rsaga.grid.calculus(in.grids = c("DSM_1.sgrd"),out.grid = > >> "DCM_1_power15.sgrd", formula = ~^3.9) > >> > >> rsaga.grid.calculus(in.grids = c("DSM_1.sgrd"),out.grid = > >> "DCM_1_power15.sgrd", formula = ~^4.0) > >> > >> > >> [[alternative HTML version deleted]] > >> > >> _______________________________________________ > >> R-sig-Geo mailing list > >> R-sig-Geo@stat.math.ethz.ch > >> https://stat.ethz.ch/mailman/listinfo/r-sig-geo > >> > >> > > > > -- > Alexander Brenning > [EMAIL PROTECTED] - T +1-519-888-4567 ext 35783 > Department of Geography and Environmental Management > University of Waterloo > 200 University Ave. W - Waterloo, ON - Canada N2L 3G1 > http://www.fes.uwaterloo.ca/geography/faculty/brenning/ > > _______________________________________________ > R-sig-Geo mailing list > R-sig-Geo@stat.math.ethz.ch > https://stat.ethz.ch/mailman/listinfo/r-sig-geo > [[alternative HTML version deleted]]
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