On Tue, 2 Sep 2003, Roger Bivand wrote:
The simplest case is:
plot(1:10)
xy - list()
identify(xy, n=1)
Segmentation fault
but
identify(xy)
Error in identify.default(xy) : invalid number of points in identify
I'm not sure, but adding a check against zero-length and/or NULL x and or
y
Hola!
I will want to identify pixels in an image with the mouse, for
so getting the image data from the matrix(es), for use in subsequent
discriminant analysis. But the following bombs R:
(windows XP, rw1071)
str(baboon)
list()
- attr(*, size)= int [1:2] 512 512
- attr(*, cellres)= num
Hi, Dr Halvorsen
Try
identify(expand.grid(1:512,1:512))
But, be careful with the index of the matrix (image)
On Tue, 02 Sep 2003 15:31:45 -0400, kjetil brinchmann halvorsen
[EMAIL PROTECTED] wrote:
Hola!
I will want to identify pixels in an image with the mouse, for so getting
the image
On Tue, 2 Sep 2003, kjetil brinchmann halvorsen wrote:
Hola!
I will want to identify pixels in an image with the mouse, for
so getting the image data from the matrix(es), for use in subsequent
discriminant analysis. But the following bombs R:
(windows XP, rw1071)
str(baboon)
list()