“Image(s) are not two dimensional”!

cosmologist wrote on Dec 30, 2011

When I run apall for my images I get the warnning:

Warning: Image(s) are not two dimensional (ignoring higher dimensions)

How can my image be of higher dimensions ?!

Thanks!

---

Mike Fitzpatrick wrote on Dec 30, 2011

Use IMHEAD to check the dimensions of an image, and note that a size such as "[1024,1024,1]" is technically considered a 3-D image. You can use image sections such as "[*,*,1]" to pass in a true 2-D section, or IMCOPY it out to a new image.

---

cosmologist wrote on Dec 30, 2011

But the header doesn't show any higher dimentions:

CCDSEC = '[15:2055,56:820]'
BIASSEC = '[1:2041,1:765]'

---

Mike Fitzpatrick wrote on Dec 30, 2011

I meant to look at the output of IMHEAD such as with

cl> imhead dev$pix
dev$pix[512,512][short]: m51  B  600s

where this says the image is 512x512. You could also do something like

cl> hselect foo.fits i_naxis yes

to simply print the number of axes in the image. What you've shown are simple keywords in the header, this doesn't actually say how big the image is.

---

Last post on Dec 30, 2011