| usersym keywords -- why? [message #63436] |
Mon, 10 November 2008 15:04  |
Christopher Thom
Messages: 66
Registered: October 2006
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Member |
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Hi all,
Debugging some code today, I discovered what I would consider to be
strange behaviour. Although...maybe this is a "feature". Consider the
following:
usersym, [ -1, 0, 1, -1 ], [ 1, -1, 1, 1 ], thick = 20
plot, findgen(10), ps=8, thick = 2
Is there any reason why usersym accepts thickness and color keywords? And,
more importantly, why the keywords passed to plot/oplot don't over-ride
them?
I was using some symbols from the awesome symcat() library [thanks david!]
when I discovered this. The only workaround I could come up with was to
extend symcat() to accept and pass _extra keywords to usersym...which now
gives me the even more confusing:
plot, findgen(10), ps = symcat(11, thick = 20), thick = 2
If anyone can see a sane or (better!) elegant solution to the thickness
madness I've been having all afternoon, I'd love to hear of it.
cheers
chris
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| Re: usersym keywords -- why? [message #63562 is a reply to message #63436] |
Tue, 11 November 2008 10:48  |
Craig Markwardt
Messages: 1869
Registered: November 1996
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Senior Member |
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On Nov 10, 6:04 pm, Christopher Thom <ct...@oddjob.uchicago.edu>
wrote:
> Hi all,
>
> Debugging some code today, I discovered what I would consider to be
> strange behaviour. Although...maybe this is a "feature". Consider the
> following:
>
> usersym, [ -1, 0, 1, -1 ], [ 1, -1, 1, 1 ], thick = 20
> plot, findgen(10), ps=8, thick = 2
>
> Is there any reason why usersym accepts thickness and color keywords? And,
> more importantly, why the keywords passed to plot/oplot don't over-ride
> them?
>
Well for example, sometimes I want a /FILLed symbol, but I don't want
the whole plot to be a giant filled polygon.
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| Re: usersym keywords -- why? [message #63565 is a reply to message #63436] |
Tue, 11 November 2008 08:09 |
R.Bauer
Messages: 1424
Registered: November 1998
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Senior Member |
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-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
David Fanning schrieb:
> David Fanning writes:
>
>> Thus, I can't get them inside my program. But, that said,
>> I can understand some of Chris's confusion, because the
>> THICK keyword only applies to symbols I can create with
>> USERSYM. (Any symbol where I have to "lift the pen" to
>> draw cannot be created in USERSYM, such as a plus sign
>> or an asterisk.)
>
> I guess I could draw a plus sign and an asterisk without
> lifting my pen, but not today. Too tedious and I have
> other work to do. Extra credit for anyone who works that
> out for me. :-)
>
> Cheers,
>
> David
Hi David
from our icgsym_define_symbols routine
there are some more complex symbols done also by x_digisym
which i can show later.
cheers
Reimar
1: BEGIN ;Plus sign
yarr = [0, 0, 0, -1, 1] * psize
xarr = [1, -1, 0, 0, 0] * psize
fill = 0
END
2: BEGIN ;cross-plus
yarr = [-1, 1, 0, 1, -1,0,1,-1,0,0,0] * psize
xarr = [-1, 1, 0, -1, 1,0,0,0,0,1,-1] * psize
fill = 0
END
3: BEGIN ;point
yarr = [0,0] * psize
xarr = [0,0] * psize
fill = 0
END
4: BEGIN ;Diamond
yarr = [0, -1, 0, 1, 0] * psize
xarr = [1, 0, -1, 0, 1] * psize
END
5: BEGIN ;Triangle
xarr = [-1,0,1,-1]*psize
yarr = [-1,1,-1,-1]*psize
END
6: BEGIN ;Square
yarr = [1, -1, -1, 1, 1] * psize
xarr = [1, 1, -1, -1, 1] * psize
END
7: BEGIN ;Cross
yarr = [-1, 1, 0, -1, 1] * psize
xarr = [1, -1, 0, -1, 1] * psize
fill = 0
END
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Version: GnuPG v1.4.5 (GNU/Linux)
Comment: Using GnuPG with SUSE - http://enigmail.mozdev.org
iD8DBQFJGa4v5aOc3Q9hk/kRApQ8AJ9GYObTTalmjZ2X4oXJDZpee4OXgACg q4Rl
y18T+1oSJCL5CPiamvUZIYE=
=45Hs
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| Re: usersym keywords -- why? [message #63568 is a reply to message #63436] |
Tue, 11 November 2008 07:20 |
David Fanning
Messages: 11724
Registered: August 2001
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Senior Member |
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David Fanning writes:
> Thus, I can't get them inside my program. But, that said,
> I can understand some of Chris's confusion, because the
> THICK keyword only applies to symbols I can create with
> USERSYM. (Any symbol where I have to "lift the pen" to
> draw cannot be created in USERSYM, such as a plus sign
> or an asterisk.)
I guess I could draw a plus sign and an asterisk without
lifting my pen, but not today. Too tedious and I have
other work to do. Extra credit for anyone who works that
out for me. :-)
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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