R help - Aug 2003 - Is there a package for digitizing or reading jpegs, ets. in R?

I'm interested in digitizing some scanned time series, and looking for a 
solution that is easy and flexible. I thought I might be able to use R's 
locator() if I could get the image into a device. I noticed that there 
are some packages like (rimage), but it (a) doesn't seem to be available 
for the Windows version and forces me to upgrade a bunch of libraries 
for my linux system. It seems like someone should have something for 
digitizing maps and/or there something very obvious that I am missing 
here. Any suggestions would be appreciated!

Peter

Peter Hovmand wrote:
> I'm interested in digitizing some scanned time series, and looking for
a
> solution that is easy and flexible. I thought I might be able to use
R's
> locator() if I could get the image into a device. I noticed that there 
> are some packages like (rimage), but it (a) doesn't seem to be
available
> for the Windows version and forces me to upgrade a bunch of libraries 
> for my linux system. It seems like someone should have something for 
> digitizing maps and/or there something very obvious that I am missing 
> here. Any suggestions would be appreciated!
> 
> Peter
> 
> ______________________________________________
> R-help at stat.math.ethz.ch mailing list
> https://www.stat.math.ethz.ch/mailman/listinfo/r-help
> 
> 
As far as I know there is no ready to use digitizer package for R, but 
instead of a rimage you can try pixmap package (although it requires 
images in pnm format - that is more memory consuming then jpeg one)

Peter Hovmand wrote:
> I'm interested in digitizing some scanned time series, and looking for 
> a solution that is easy and flexible. I thought I might be able to use 
> R's locator() if I could get the image into a device. I noticed that 
> there are some packages like (rimage), but it (a) doesn't seem to be 
> available for the Windows version and forces me to upgrade a bunch of 
> libraries for my linux system. It seems like someone should have 
> something for digitizing maps and/or there something very obvious that 
> I am missing here. Any suggestions would be appreciated! 
I have used "xfig" with some success.  You suck your image into xfig
and
give it a large depth.  Next you draw contours and scales over the top 
of the image.  The xfig coordinates can be converted to appropriate 
coordinates with a linear transformation.  I have done a number of 
 coastlines and topographic maps this way.