[texhax] Drawing graphs with TikZ
Tom Backer Johnsen
backer at psych.uib.no
Sun Dec 2 20:33:34 CET 2007
Matthew Leingang wrote:
> On Dec 2, 2007, at 5:28 AM, Tom Backer Johnsen wrote:
>
>> Tom Backer Johnsen wrote:
>>> \documentclass{article}
>>> \usepackage{tikz}
>>> \begin{document}
>>> \begin{tikzpicture}
>>> \path ( 0:2) node [shape=circle,draw] {}
>>> ( 0:1) node [shape=circle,draw] {}
>>> ( 0:0) node [shape=circle,draw] {}
>>> ( 1,1) node [shape=rectangle,draw] {}
>>> (-1,1) node [shape=rectangle,draw] {};
>>>
>>> \end{tikzpicture}
>>> \end{document}
>>>
>>> This results in a figure nothing like the one in the manual, where
>>> the
>>> circles are all along a horizontal line (rather than vertical) with
>>> the squares above and somewhat to the left of the sequence of the
>>> circles. As far As I am able to see, this is an exact
>>> reproduction of
>>> the example.
>>>
>>> Can anyone point at my error?
>> It is really strange. So often, when you do any kind of programming
>> you see your error, but not before the question is out. In this case
>> it is the colons in the circle that yields the unexpected results
>> without any kind of message.
>
> Dear Tom,
>
> TikZ has a very flexible syntax for specifying coordinates; your code
> didn't cause an error because it's not erroneous! The coordinate
> specification (x,y) is for Cartesian coordinates, and (theta:r) is
> for polar coordinates. So your coordinate (0:2) is 2 cm along the
> polar line theta=0, i.e, the point with cartesian coordinates (2,0).
>
> There is a very friendly mailing list just for pgf and tikz users:
>
> https://lists.sourceforge.net/lists/listinfo/pgf-users
>
> Take care and good luck.
Thank you for the information! I'll have a look at that list.
Tom
>
> --Matt
>
> --
> Matthew Leingang
> Preceptor in Mathematics
> Harvard University
>
> http://www.math.harvard.edu/~leingang/vCard.vcf
>
>
>
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| Tom Backer Johnsen, Psychometrics Unit, Faculty of Psychology |
| University of Bergen, Christies gt. 12, N-5015 Bergen, NORWAY |
| Tel : +47-5558-9185 Fax : +47-5558-9879 |
| Email : backer at psych.uib.no URL : http://www.galton.uib.no/ |
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