[R] [OT] 'gv' and fractional points

2007-06-15 Thread Ted Harding
Hi Folks, This is off-topic R-wise, but it may be close to the heart of many R-users, so I think it may be the best place to ask! Users of 'gv' (the front end to ghostscript) will be aware of the little window which gives you the x-y coordinates (in points = 1/72 inch) of the position of the

Re: [R] [OT] 'gv' and fractional points

2007-06-15 Thread hadley wickham
This doesn't answer your original question, and isn't much help unless you're on a mac, but there's a nice looking program that makes this kind of graph scraping really easy: http://www.arizona-software.ch/applications/graphclick/en/ Hadley On 6/15/07, Ted Harding [EMAIL PROTECTED] wrote: Hi

Re: [R] [OT] 'gv' and fractional points

2007-06-15 Thread Deepayan Sarkar
On 6/15/07, Ted Harding [EMAIL PROTECTED] wrote: Hi Folks, This is off-topic R-wise, but it may be close to the heart of many R-users, so I think it may be the best place to ask! Users of 'gv' (the front end to ghostscript) will be aware of the little window which gives you the x-y

Re: [R] [OT] 'gv' and fractional points

2007-06-15 Thread Ted Harding
On 15-Jun-07 16:29:53, Ted Harding wrote: [...] However, as a follow-up, I've since found that one can (somewhat tediously) do what I was asking with the GIMP. As well as the awkwardness of doing it the GIMP way, I've discovered another disadvantage. I'd previously tried it on a rather small

Re: [R] [OT] 'gv' and fractional points

2007-06-15 Thread Ted Harding
On 15-Jun-07 15:56:58, hadley wickham wrote: This doesn't answer your original question, and isn't much help unless you're on a mac, but there's a nice looking program that makes this kind of graph scraping really easy: http://www.arizona-software.ch/applications/graphclick/en/ Hadley

Re: [R] [OT] 'gv' and fractional points

2007-06-15 Thread Gabor Grothendieck
Check out the engauge digitizer: http://digitizer.sourceforge.net/ On 6/15/07, Ted Harding [EMAIL PROTECTED] wrote: Hi Folks, This is off-topic R-wise, but it may be close to the heart of many R-users, so I think it may be the best place to ask! Users of 'gv' (the front end to

Re: [R] [OT] 'gv' and fractional points

2007-06-15 Thread Paul Murrell
Hi If I understand correctly, this is something that the 'grImport' package might be very useful for. You can import the PostScript image into R, which means that you can draw the image, but you also have the locations of everything that is drawn as numeric values so you should be able (probably

Re: [R] [OT] 'gv' and fractional points

2007-06-15 Thread Ted Harding
On 15-Jun-07 20:08:05, Gabor Grothendieck wrote: Check out the engauge digitizer: http://digitizer.sourceforge.net/ Thanks, Gabor. This looks useful, as far as it goes. However, it doesn't deal directly with PS, so one would have to work to pixel resolution of screenshots as displayed by say