| Re: Object Graphics fonts [message #39679 is a reply to message #39240] |
Mon, 07 June 2004 14:15   |
Michael Wallace
Messages: 409
Registered: December 2003
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Senior Member |
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> Once you create the axis, you can use the GetProperty method
> and the TickText keyword to get the text objects used to
> create the axis annotations. You are free to manipulate these
> text objects anyway you like. I'm sure you could rotate them
> upside down and stand them on their heads, if you like. :-)
Some things are so easy when you know what to do. This works
beautifully. Thanks, David!
> Are you not using IDL 6.0? Fonts there look very nice.
> I can see why you are complaining if you are using a
> previous version of IDL. You can certainly rotate
> Y axis fonts if that's what you want to do. All kinds of
> text manipulation keywords are available. One usually
> uses the "random change" method until you understand which
> keywords to use and how.
I am running IDL 6.0, but I was trying to use small fonts to maximize
the amount of space in the plot for the important stuff, i.e. the data.
I bit the proverbial bullet and made my fonts a little larger and
sacrificed some plot size and things look good.
>> This might be a dumb question, but if I were to generate a PostScript
>> file and then use a utility such as the convert program, would the
>> resulting bitmap (e.g. PNG, GIF) look better than the version IDL would
>> create by using Write_PNG or Write_GIF with the data from the
>> IDLgrWindow or IDLgrBuffer? I guess I could try this out and see if it
>> looks any better, but I'd rather not figure out how to get PostScript to
>> work if it doesn't make any improvement.
>
>
> Don't waste your time. "Looking good" is a matter of how much
> resolution you have. You computer has about 75 pixels per inch
> PostScript has anywhere from 300-1200 pixels per inch. Nothing
> you display on the computer is going to look as good as something
> you print. End of story. :-)
Yep. I always seem to forget that little tidbit that it depends on
resolution.
> (Of course you might have one of those 21 inch LCD flat-panel
> monitors I've been drooling over lately. Images look pretty good
> on *those*!)
Actually, I'd prefer dual flat-panel monitors. ;-) I wish we could
afford two 21-inch monitors, but for now, I'll settle for something a
little smaller, just as long as there are two of them.
> Well, have you tried making your buffer bigger and Congriding it down
> for the JPEGs? That might improve resolution some, especially if you
> are using the older polygon fonts.
Ah, the old make-um-big trick I've employed so many times in direct
graphics land. I did try that just to see what would happen and things
did look a little better in terms of letter shape, but the letters were
part black and part gray due to the rebin. Whatever. I made the fonts
bigger anyway, so this isn't an issue.
-Mike
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