[R] Print plot to pdf, jpg or any other format when using scatter3d error

[Duncan Murdoch]

On 03/01/2011 8:17 PM, Jurica Seva wrote:
> Hi,
>
> I have been trying to output my graphs to a file (jpeg, pdf, ps, it
> doesnt matter) but i cant seem to be able to get it to output.


As Uwe said, you are using rgl graphics, not base graphics.  So none of 
the standard devices work, you need to use the tools built into rgl.  
Attach that package, and then read ?rgl.postscript (for graphics in 
various vector formats, not just Postscript) and ?rgl.snapshot (for 
bitmapped graphics).

Some notes:
  - For a while rgl.snapshot wasn't working in the Windows builds with R 
2.12.1; that is now fixed, so you should update rgl before getting 
frustrated.
  - rgl.snapshot just takes a copy of the graphics buffer that is 
showing on screen, so it is limited to the size you can display
  - rgl.postscript does a better job for the parts of an image that it 
can handle, but it is not a perfect OpenGL emulator, so it doesn't 
always include all components of a graph properly.

Duncan Murdoch

>   I tried a
> few things but none of them worked and am lost as what to do now. I am
> using the scatter3d function, and it prints out the graphs on tot he
> screen without any problems, but when it comes to writing them to a file
> i cant make it work. Is there any other way of producing 3dimensional
> graphs (they dont have to be rotatable/interactive after the print out)?
>
> The code is fairly simple and is listed down :
>
> #libraries
> library(RMySQL)
> library(rgl)
> library(scatterplot3d)
> library(Rcmdr)
>
> ##############################################################################
> #database connection
> mycon<- dbConnect(MySQL(),
> user='root',dbname='test',host='localhost',password='')
> #distinct sessions
> rsSessionsU01<- dbSendQuery(mycon, "select distinct sessionID from
> actiontimes where userID = 'ID01'")
> sessionU01<-fetch(rsSessionsU01)
> sessionU01[2,]
>
> #user01 data
> mycon<- dbConnect(MySQL(),
> user='root',dbname='test',host='localhost',password='')
> rsUser01<- dbSendQuery(mycon, "select
> a.userID,a.sessionID,a.actionTaken,a.timelineMSEC,a.durationMSEC,b.X,b.Y,b.Rel__dist_,b.Total_dist_
> from `actiontimes` as a , `ulogdata` as b where a.originalRECNO =
> b.RECNO and a.userID='ID01'")
> user01<- fetch(rsUser01, n= -1)
> user01[1,1]
>
> #plot loop
>
> for (i in 1:10){
>
>       userSubset<-subset(user01,sessionID ==
> sessionU01[i,],select=c(timelineMSEC,X,Y))
>       userSubset
>       x<-as.numeric(userSubset$X)
>       y<-as.numeric(userSubset$Y)
>       scatter3d(x,y,userSubset$timeline,xlim = c(0,1280), ylim =
> c(0,1024),
> zlim=c(0,1800000),type="h",main=sessionU01[i,],sub=sessionU01[i,])
>       tmp6=rep(".ps")
>       tmp7=paste(sessionU01[i,],tmp6,sep="")
>       tmp7
>       rgl.postscript(tmp7,"ps",drawText=FALSE)
>       #pdf(file=tmp7)
>       #dev.print(file=tmp7, device=pdf, width=600)
>       #dev.off(2)
> }
>
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