Newbie Image Center Problem
AikidoGuy
I'm very new to this group. I've tried searching the archives and
looking on the web for help, but I've been unsuccessful so far.
My problem: When viewing an image at a certain zoom level, I don't
know how to pan the image to a specific (x,y) pixel co-ordinates.
Can GIMP do such a thing? I'd like the zoom level (70%, 800%, etc) to
stay what it is currently set at. Simply I'd like a dialog box where I
could enter (x,y) values and then the gui would pan and center on
those co-ordinates.
Thanks for any help,
AikidoGuy
Michael Soibelman
Here's a way to do this approximately.
Open the navigation window. (->View -> Navigation Window)
Expand the navigation window by dragging a corner diagonally. Use the
slider at the bottom of the navigation GUI to around 150 %. Now place the
pointer in the bounding box that appears and drag the box so that the
object (location) you want centered is in the middle of the box or close to
it. Now when you use the slider to higher zoom the center of the box will
stay in the center of the image window.
Hope that helps though it isn't exactly what you asked for.
P.S. As you raise the zoom level you may want to recenter the bounding box
to keep it just right.
Floyd L. Davidson
I'm not sure if you are aware of these tools, or if they
will satisfy your needs (which as stated are slightly
different than what can be done).
If you go to the <IMAGE>->View menu, you can activate
display of "rulers" and "scrollbars". Together those
allow grossly positioning an image within the window,
but it is not very precise. If the scrollbars are
displayed, at the lower right corner there will be a
"move" icon, and clicking on that allows moving the
image within the display window (again, with very course
granularity).
Also you can activate the "Navigation Window" from the
same menu, and with that you can change both the zoom
and the location of the portion displayed. When the
zoom is such that only part of the image is displayed, a
rectangle is placed on the image in the Navigation
Window to indicate the area displayed in the Image
Window, and you can click and drag on that rectangle to
move the display. Again though, it is not as precise as
what you've indicated and it would be exceedingly
difficult to center a given pixel location with an
precision at all.
--
Floyd L. Davidson <http://www.apaflo.com/floyd_davidson>
Ukpeagvik (Barrow, Alaska) fl...@apaflo.com
AikidoGuy
Thank you both for providing some hints. Perhaps the developers of
GIMP might provide a simple little utility/dialog box that would allow
such a thing in the future?
On a slightly related note, does GIMP provide a co-ordinate system
other than pixels? I ask, because it would be even nicer if I could
use my own (x,y) co-ordinate system and then center the image based on
a point in that space, rather than mapping to pixel space and then
centering the image based on the pixel value. Well... perhaps wishful
"hoping" :)
Thanks again,
AikidoGuy