[pstricks] PSTricks Digest, Vol 66, Issue 10

[Zbigniew Nitecki]

Zbigniew Nitecki
Department of Mathematics
Tufts University
Medford, MA 02155

telephones:
Office    (617)627-3843
Dept.    (617)627-3234
Dept. fax    (617)627-3966
http://www.tufts.edu/~znitecki/

On Jul 12, 2008, at 6:00, pstricks-request at tug.org wrote:

>
> Message: 2
> Date: Fri, 11 Jul 2008 15:23:57 -0400
> From: Zbigniew Nitecki <zbigniew.nitecki at tufts.edu>
> Subject: [pstricks] placing subpictures in pstricks
> To: pstricks at tug.org
> Message-ID: <DE21C360-079A-439C-A4D3-89421E1E8026 at tufts.edu>
> Content-Type: text/plain; charset="us-ascii"
>
> I want to place two different pictures side-by-side, and tried the
> following:
> **********************************************************************************
>> 	\begin{pspicture}(-4,-2.5)(4,2.5)
>> 	\psset{xunit=2cm, yunit=2cm}
>> 		\newcommand{\polarplane}{
>> 			\psline{<->}(0,2)(0,0)(2,0)
>> 			\uput[u](0,2){$\theta$}
>> 			\uput[r](2,0){$r$}
>> 			\pspolygon[fillstyle=hlines,fillcolor=lightgray, gridangle=45]%
>> 				(0,0.5)(1.5,0.5)(1.5,1.5)(0,1.5)
>> 		}
>> 		\newcommand{\rectplane}{
>> 			\psline{<->}(0,2)(0,-2)
>> 			\psline{<->}(-2,0)(2,0)
>> 			\uput[u](0,2){$y$}
>> 			\uput[r](2,0){$x$}
>> 		\multido{\rr=0.5+0.2}{6}{%
>> 			\psarc(0,0){\rr}{0}{90}%
>> 			}	
>> 		\multido{\rt=0+10}{90}{%
>> 			\psline(0.5 \rt\space cos mul, 0.5 \rt\space sin mul)%
>> 				(1.5 \rt\space cos mul, 1.5 \rt\space sin mul)%
>> 			}	
>> 		}
>> 		\rput(-4,0){\polarplane}
>> 		\rput(2,0){\rectplane}
>> 	\end{pspicture}
> ***************************************************************************************
> which gave me an error message
>
>> l.49 		\rput(-4,0){\polarplane}
>>
>> ?
>> ! Illegal unit of measure (pt inserted).
>> <to be read again>
>>                   0
>> l.50 		\rput(2,0){\rectplane}
>>
>> ?
>>
>
> (line 49 is the first \rput)  If I hit return, it repeated the second
> message, four times with 0, then four with 1 in place of zero, etc;
> when I ran in silent mode, I got an output consisting of two copies of
> the object defined by \polarplane, once on the extreme left and the
> other on the extreme right, and no copy of \rectplane.  What is going
> on, and how should I carry out what I want to do?
>
>
>
> Zbigniew Nitecki
> Department of Mathematics
> Tufts University
> Medford, MA 02155
>
> telephones:
> Office    (617)627-3843
> Dept.    (617)627-3234
> Dept. fax    (617)627-3966
> http://www.tufts.edu/~znitecki/
>
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> ------------------------------
>
> Message: 3
> Date: Fri, 11 Jul 2008 13:45:39 -0700
> From: Michael Sharpe <msharpe at ucsd.edu>
> Subject: Re: [pstricks] placing subpictures in pstricks
> To: Graphics with PSTricks <pstricks at tug.org>
> Cc: Michael Sharpe <msharpe at ucsd.edu>
> Message-ID: <90F1484E-2194-4A9A-BC13-84B426F9DD07 at ucsd.edu>
> Content-Type: text/plain; charset=US-ASCII; format=flowed; delsp=yes
>
> The main problem is the \psline specification. The first should be
>
> \psline(!0.5 \rt\space cos mul 0.5 \rt\space sin mul)%add ! at start,
> drop comma
>
> and similarly for the second. Make sure to say \SpecialCoor  
> beforehand.
>
> Michael
>

I understand the change in format in the \psline specification, but I  
am not sure where the \SpecialCoor command should go (my copy of the  
pstricks book has paragraphs on p. 27 and 125, but not one example of  
the syntax of using it.  Does it go at the start of the body of the  
\newcommand definition, or inside the multido---and do I need to put a  
\NormalCoor command somewhere at the end?
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