Re: [R] Location of grobs etc on lattice output
I'm puzzled about side effects of trellis.unfocus(): The following runs without problem, though grid.text() does not seem to do anything. (I'd thought that I had it working at one point.) library(DAAG); library(lattice); library(grid) cuckoos.strip - stripplot(species ~ length, xlab=, data=cuckoos) cuckoos.bw - bwplot(species~length, xlab=Length of egg (mm), data=cuckoos) vp0 - viewport(layout=grid.layout(2, 1)) pushViewport(vp0) vp1 - viewport(layout.pos.row=1) vp2 - viewport(layout.pos.row=2) pushViewport(vp1) print(cuckoos.strip,newpage=FALSE) # trellis.focus(panel, row=1, column=1, clip.off=TRUE) grid.text(A, x=unit(0,native), y=unit(1.05,native), gp=gpar(fontsize=9)) # trellis.unfocus() ## remove the following upViewport() upViewport() pushViewport(vp2) print(cuckoos.bw, newpage=FALSE) trellis.focus(panel, row=1, column=1, clip.off=TRUE) grid.text(B, x=unit(0,native), y=unit(1.05,native), gp=gpar(fontsize=9)) trellis.unfocus() If I remove the #'s, and remove the upViewport() that follows the second #, I seem to lose the current tree, as though the newpage=FALSE for the next print() is ignored. Should I be able to do something like this? Clearly I do not understand what happens when trellis.focus() is invoked. This seems an area where an effective GUI, with a graphical display of the viewport tree, could be very helpful. John Maindonald email: [EMAIL PROTECTED] phone : +61 2 (6125)3473fax : +61 2(6125)5549 Centre for Bioinformation Science, Room 1194, John Dedman Mathematical Sciences Building (Building 27) Australian National University, Canberra ACT 0200. On 21 Nov 2004, at 3:41 PM, Deepayan Sarkar wrote: On Saturday 20 November 2004 19:41, John Maindonald wrote: Is there any way, after use of print.trellis(), to obtain the co-ordinates of the plot region, e.g., in what are then the native co-ordinates? Have you read help(trellis.focus)? This is new in 2.0.0 and the recommended API for interacting with lattice plots (you can of course use grid tools directly, but details are more likely to change at that level). It hasn't had much testing, so I would appreciate reports of things that should be doable easily but isn't. e.g. library(DAAG) library(lattice); library(grid) data(cuckoos) pushViewport(viewport(layout=grid.layout(2, 1))) pushViewport(viewport(layout.pos.row=1)) cuckoos.strip - stripplot(species ~ length, data=cuckoos) print(cuckoos.strip, newpage=FALSE) grid.text(A, x=unit(0.18,native), y=unit(0.925,native)) # This works, but is fiddly, and needs rejigging if width # or fontsize are changed. popViewport(1) An alternative would of course be to access the co-ordinate system used by the lattice function for locating the panels, or for locating labelling. As in the example above, I have been using grid.text() to position text outside the plot region, but closer to the top axis than the legend parameter to the lattice function will allow. trellis.focus(panel, row=1, column=1, clip.off=TRUE) will put you in the plot region (panel), but will switch off clipping so you can write text outside. You can also now control the amount of space between the axis and legend, see str(trellis.par.get(layout.heights)) Deepayan __ [EMAIL PROTECTED] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html __ [EMAIL PROTECTED] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
Re: [R] Location of grobs etc on lattice output
On Sunday 21 November 2004 16:35, John Maindonald wrote: I'm puzzled about side effects of trellis.unfocus(): The following runs without problem, though grid.text() does not seem to do anything. (I'd thought that I had it working at one point.) library(DAAG); library(lattice); library(grid) cuckoos.strip - stripplot(species ~ length, xlab=, data=cuckoos) cuckoos.bw - bwplot(species~length, xlab=Length of egg (mm), data=cuckoos) vp0 - viewport(layout=grid.layout(2, 1)) pushViewport(vp0) vp1 - viewport(layout.pos.row=1) vp2 - viewport(layout.pos.row=2) pushViewport(vp1) print(cuckoos.strip,newpage=FALSE) # trellis.focus(panel, row=1, column=1, clip.off=TRUE) grid.text(A, x=unit(0,native), y=unit(1.05,native), gp=gpar(fontsize=9)) I think you want npc rather than native here. x=0 on the native scale is outside the device area. # trellis.unfocus() ## remove the following upViewport() upViewport() pushViewport(vp2) print(cuckoos.bw, newpage=FALSE) trellis.focus(panel, row=1, column=1, clip.off=TRUE) grid.text(B, x=unit(0,native), y=unit(1.05,native), gp=gpar(fontsize=9)) trellis.unfocus() If I remove the #'s, and remove the upViewport() that follows the second #, I seem to lose the current tree, as though the newpage=FALSE for the next print() is ignored. Should I be able to do something like this? Clearly I do not understand what happens when trellis.focus() is invoked. This is a bug in trellis.unfocus, caused by my not reading grid documentation carefully enough, I didn't notice that upViewport(0) jumps to the root viewport instead of going up 0 viewports. I'll post an update soon. Quick fix: assignInNamespace(trellis.unfocus, ns = lattice, value = function() { if (lattice:::lattice.getStatus(vp.highlighted)) { grid.remove(lvp.highlight, warn = FALSE) lattice:::lattice.setStatus(vp.highlighted = FALSE) } lattice:::lattice.setStatus(current.focus.column = 0, current.focus.row = 0) if (lattice:::lattice.getStatus(vp.depth) 0) upViewport(lattice:::lattice.getStatus(vp.depth)) lattice:::lattice.setStatus(vp.depth = 0) invisible() }) This seems an area where an effective GUI, with a graphical display of the viewport tree, could be very helpful. True, but it may be overkill for the amount of use it would get. Deepayan __ [EMAIL PROTECTED] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
[R] Location of grobs etc on lattice output
Is there any way, after use of print.trellis(), to obtain the co-ordinates of the plot region, e.g., in what are then the native co-ordinates? e.g. library(DAAG) library(lattice); library(grid) data(cuckoos) pushViewport(viewport(layout=grid.layout(2, 1))) pushViewport(viewport(layout.pos.row=1)) cuckoos.strip - stripplot(species ~ length, data=cuckoos) print(cuckoos.strip, newpage=FALSE) grid.text(A, x=unit(0.18,native), y=unit(0.925,native)) # This works, but is fiddly, and needs rejigging if width # or fontsize are changed. popViewport(1) An alternative would of course be to access the co-ordinate system used by the lattice function for locating the panels, or for locating labelling. As in the example above, I have been using grid.text() to position text outside the plot region, but closer to the top axis than the legend parameter to the lattice function will allow. John Maindonald email: [EMAIL PROTECTED] phone : +61 2 (6125)3473fax : +61 2(6125)5549 Centre for Bioinformation Science, Room 1194, John Dedman Mathematical Sciences Building (Building 27) Australian National University, Canberra ACT 0200. __ [EMAIL PROTECTED] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
Re: [R] Location of grobs etc on lattice output
On Saturday 20 November 2004 19:41, John Maindonald wrote: Is there any way, after use of print.trellis(), to obtain the co-ordinates of the plot region, e.g., in what are then the native co-ordinates? Have you read help(trellis.focus)? This is new in 2.0.0 and the recommended API for interacting with lattice plots (you can of course use grid tools directly, but details are more likely to change at that level). It hasn't had much testing, so I would appreciate reports of things that should be doable easily but isn't. e.g. library(DAAG) library(lattice); library(grid) data(cuckoos) pushViewport(viewport(layout=grid.layout(2, 1))) pushViewport(viewport(layout.pos.row=1)) cuckoos.strip - stripplot(species ~ length, data=cuckoos) print(cuckoos.strip, newpage=FALSE) grid.text(A, x=unit(0.18,native), y=unit(0.925,native)) # This works, but is fiddly, and needs rejigging if width # or fontsize are changed. popViewport(1) An alternative would of course be to access the co-ordinate system used by the lattice function for locating the panels, or for locating labelling. As in the example above, I have been using grid.text() to position text outside the plot region, but closer to the top axis than the legend parameter to the lattice function will allow. trellis.focus(panel, row=1, column=1, clip.off=TRUE) will put you in the plot region (panel), but will switch off clipping so you can write text outside. You can also now control the amount of space between the axis and legend, see str(trellis.par.get(layout.heights)) Deepayan __ [EMAIL PROTECTED] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html