yvonne leduc wrote:
> I would like some confirmation or explanation about the differences I=20
> see, and the way I understand it.
The command "ray" does not care about the size of your display, it may=20
even be used in batch mode on a computer that does not have a monitor=20
attached to it at all.
To prevent the "cropping" or "zooming" on images created by the "ray"=20
command you have to make sure that the aspect ratio of the width and=20
height of the ray command are the same as the aspect ratio of your=20
if you will be rendering (thats what the command ray does)
figures of 2000 x 2000 you should choose a viewport of
say 700x700, then:
2000 / 2000 =3D 1 =3D 700 / 700
- so you should execute the command:
viewport 700, 700
- and then fine tune your figure and then run the ray command:
ray 2000, 2000
- you want images at 3000 Width x 2000 Height
3000 / 2000 =3D 1.5
- your limiting display size is your height so
try for instance height =3D 768
width =3D height * 1.5 =3D 768 * 1.5 =3D 1152
- but 1152 is wider than your display (1024) so lets try height =3D 5=
width =3D 500 * 1.5 =3D 750 (which is good now, or at least it fits)
- so you would issue the command
viewport 750, 500
- then ray 3000, 2000
> And the reason for all this is ...
> ... is a *.png image created with ray 1000,750 going to be good enough=20
> for publication standards? Is there much benefit in going higher? wha=
> causes the limits, if any?
The journal usually specifies the resolution at which the images will be=20
If the journal says images print at 300 dpi (Dots Per Inch) and your=20
figure will have a final printed width of 3 inches then you want to=20
render images with a width of 900.
The publisher will usually scale the picture with a very good software=20
so even if it has to be "enlarged" by a few pixels the result will be=20
good. But if it has to be shrinked you may run into trouble with labels,=20
thin lines etc.
Hope this helped a bit.
Ezequiel PANEPUCCI, Ph.D. - Institut Pasteur
Plate-Forme 6 - Cristallog=E9n=E8se et Diffraction des Rayons X
Telephone: +33 (0)1 44 38 94 57
Portable: +33 (0)6 13 14 39 06