| Re: Contour object quality [message #35511 is a reply to message #35429] |
Wed, 18 June 2003 01:23  |
basson
Messages: 4
Registered: June 2003
|
Junior Member |
|
|
David Fanning <david@dfanning.com> wrote in message news:<MPG.19538635dc21919f989688@news.frii.com>...
> Jacques Basson writes:
>
>> Thanks David, that put me on the right track! Although it does lead me
>> to another question... According to the IDL documentation, the
>> resolution for direct graphics is 1000 dots/cm. So when I said that I
>> did try all the keywords to IDLgrClipboard, I had tried
>>
>> contwindow = obj_new('IDLgrClipboard', dimensions=[17.8,12.7], $
>> units=2, Resolution=[0.001, 0.001])
>>
>> but got the error message
>>
>> % OBJ_NEW: Window DIMENSION[0] exceeds maximum.
>> Clamping to screen dimensions.
>>
>> (the dimensions of 178mm X 127mm are taken from the direct graphics
>> output). 292dpi (which is borderline for high quality printing of lines)
>> is the maximum possible resolution that I could get with those
>> dimensions. And for your 5"x5" plot, the maximum is 409dpi.
>>
>> So it seems like I can't get the direct graphics resolution. However,
>> no-one *really* needs 2540dpi, but I can't even get 600dpi, which is a
>> noticeable for my required A3 output.
>
Damn news feed seems to be down (again), so hopefully this posting
from google will get through.
> I didn't notice a question in there, but you are
> correct that the resolution of the IDLgrClipboard
> is limited. I seem to recall a post from Karl Schultz
> that addressed this issue, but I haven't been able
> to find it in 15 minutes of searching. Maybe
> Karl could help us out again.
Well, "why does it suck so bad?" seems a bit unfair for a question...
> I suppose you could have better luck using the PRINTER
> device rather than the clipboard, but I don't have time
> to try it this morning. I have a truck-load of large
> rocks showing up in a half hour and my back is already
> getting sore. :-(
Except that the printer that I will be printing on is on a different
machine - and last time I tried to setup a PostScript printer and use
"print to file", IDL hung the machine :( I have since redone my
routine using direct graphics (much quicker than trying to sort out
this problem).
>
>> Interestingly, the object eps file was twice the size of the direct
>> graphics eps file (object at 292dpi - direct at 2540dpi).
>
> Only twice as large!? You must really be living right. :-)
Right on the very edge!
Thanks for the help.
Jacques
|
|
|
|
comp.lang.idl-pvwave archive
Members
Search
Help
Login
Home
