that one is % for integer and fractional for decimal; in the case of the
arrow head specifically, though, that translates into nm and angstroms. I
could regret doing that way, but....
Bob
On Mon, Feb 25, 2013 at 4:04 AM, Angel Herráez <angel.herr...@uah.es> wrote:
> > Regarding the SCALE parameter, it seems that decimal arguments are
> > interpreted as angstrom units, while integer values are interpreted
> > as 0.01Å units. So yes, SCALE 500 == 5Å diameter. DIAMETER also
> > displays this dichotomy, with decimal numbers in Å and integer
> > numbers in some other scale (approx 1Å:13). WIDTH seems to be
> > consistently in Å, at least for ARC commands. Are these differences
> > between integers and floats intended, or is that a bug?
>
> It might be keeping the legacy mode (Rasmol-compatible) or specifying
> units for e.g. bond thickness. Integer values are read as * 1/250
> Angstrom.
> e.g. "wireframe 2" and "wireframe 2.0" are not the same.
>
> It's always being that way and you must include a decimal point to
> force angstroms. I'm not sure if this applies to drawings, but the
> custom is always use decimal values when you mean angstroms, to be
> sure.
>
>
>
> >
> > BTW, these behaviors are still present in 13.0. Thanks for updating,
> > Andreas.
> >
> > Thanks,
> >
> > -Spencer
> >
> > On Sat, Feb 23, 2013 at 3:38 AM, Angel Herráez <angel.herr...@uah.es>
> > wrote:
> > Robert Hanson wrote:
> > > draw scale 500 arc ... 5-Angstrom diameter
> >
> > 500 ==> not 5 angstrom, I'd say ?
> >
> >
> > > * What's the best way to draw a line without an arrow head? Use
> > 'draw cylinder'?
> > > Yes, I think so.
> >
> > There is "draw line" (polyline) and "draw curve", which is useful
> > e.g. for
> > arbitrary curves with several control points
> > Examples (here I am using atom numbers, but you can put coordinates
> > inside the braces):
> >
> > draw myLine1 line {@10} {@5} {@9}
> > draw myLine2 curve {@10} {@5} {@9}
> >
> > And you can add options like line thickness or color.
> >
> > Working at least in 13.0, but also probably in 12.0
> >
> >
> >
> >
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>
>
>
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--
Robert M. Hanson
Larson-Anderson Professor of Chemistry
Chair, Chemistry Department
St. Olaf College
Northfield, MN
http://www.stolaf.edu/people/hansonr
If nature does not answer first what we want,
it is better to take what answer we get.
-- Josiah Willard Gibbs, Lecture XXX, Monday, February 5, 1900
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