Re: Chemical structure formula flows out

[Hans Hagen <pragma@wxs.nl>]

Zhichu Chen wrote:
> Hello
>  
> I've been studying PPCHTEX these days, it's very powerful, and I 
> cannot control it well. I just wrote a chemical struture like:
>  
> ================================
> \startchemical
>   [size=small,scale=small,width=fit,height=fit,frame=on]
>   \chemical[SIX,SB13456,DB2,Z]
>     [C,C,C,C,C,C]
>   
> \chemical[PB:Z1,ONE,Z0,SB18,Z8,MOV1,ONE,DB1,SB7,Z07,MOV1,ONE,SB13,Z03,MOV1,ONE,SB1,DB7,Z017,PE] 
>
>     [C,H,C,H,C,H,C,CH_3,O]
>   \chemical[PB:Z2,ONE,Z0,SB1,Z1,PE]
>     [C,CH_3]
>   \chemical[PB:Z3,ONE,Z0,SB3,Z3,PE]
>     [C,H]
>   \chemical[PB:Z4,ONE,Z0,SB45,Z45,PE]
>     [C,H,H]
>   \chemical[PB:Z5,ONE,Z0,SB56,Z56,PE]
>     [C,CH_3,H]
>   \chemical[PB:Z6,SIX,Z3,SB23,Z24,PE]
>     [C,CH_3,CH_3]
> \stopchemical
> ================================
>  
> only the carbon-ring is in the frame, I think maybe PB:..,PE pair does 
> not change the size of the picture. I know I can use like
> ================================
> \startchemical
>   [size=small,scale=small,width=9000,height=5000,left=3000]
> ================================
> to specify the size, but I need to try several times to get a correct 
> version. Is there any parameter that do this staff automatically?
>  
not that i know; but i do know that i need to clean up this module some day (make it into a pure metapost thing) and then we can provide more control 

Hans 

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