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Re: need more plotting symbols please [message #50430 is a reply to message #50060] Mon, 02 October 2006 10:23 Go to previous messageGo to previous message
David Fanning is currently offline  David Fanning
Messages: 11724
Registered: August 2001
Senior Member
don.woodraska@gmail.com writes:

> It's not a problem, just a preference. Being a mac person, I expect
> things to just work, especially when the intent is clear. I love the
> function as it stands, but I like having the flexibility to be lazy and
> not worry about it.

Well, the problem is that when you write new programs you
have to be careful not to improve things too much. That is
to say, if you change the interface, even if you are changing
a LOUSY interface, you better have a VERY good reason for
doing so. (If you need examples, consider just about anything
from a Microsoft Windows program).

For example, if you were writing the PLOT command over
again, you would not make the dependent data the first positional
parameter if there was one parameter and the second positional
parameter if there were two parameters. You would write
the arguments as people tended to use them. But if you
write a wrapper to the PLOT command, you would be foolish
to change the way the PLOT command does things or you would
confuse *everyone*. (The LIMIT keyword to MAP_SET, in which
the order is [y,x] instead of the usual [x,y] is another
example. I don't think I have *ever* written the LIMIT
correctly in one go.)

So, in this case, I prefer to allow the user to place the
minus sign outside the symbol number because that's how IDL
does it. I'd confuse myself if I tried something else. :-)


> I also just realized that we're sacrificing the histrogram-like psym=10
> option. I may remap that symbol to another number.

Oh, right. I didn't think of that. I'll fix that myself. I've screwed
up index 8, too. Humm. I should have spent a few more minutes thinking
about this, it looks like. :-(

I'll have something new later today.

Cheers,

David
>
>
>

--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.dfanning.com/
Sepore ma de ni thui. ("Perhaps thou speakest truth.")

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