gnuplot-py-users

[Gnuplot-py-users] Problem with plotting different linestyles

[Jette K. <jet...@pi...>]

Hallo,

I need to plot some curves and a data point into one diagram. I can't 
find out how to tell Gnuplot to use different linestyles for different 
items ("lines" for the curves and "points" for data) when plotting from 
a python script.

E.g., if I write

g=Gnuplot.Gnuplot()
g('set data style lines'),

the plotting command for the point is not executed (naturally...).
But is there a way to give a data style different from the general on, 
e.g in the plotting command?

I tried things like
g.plot(a,b,c,k with points)
where a to c are the curves and k should be the point, but it does not work.

I would be grateful for any help.

Greetings, Jette

Re: [Gnuplot-py-users] Problem with plotting different linestyles

[Juho S. <juh...@as...>]

Hi, 

When I need to plot both lines and points (data and fitted model)
I use something like this:

plt1 = Gnuplot.Gnuplot()
plt1.plot(Gnuplot.Data(MJD,most_flux,most_err,with='yerrorbars 1'))
plt1.replot(Gnuplot.Data(MJD,flux_fit,with='lines 1'))



--

   Juho Schultz

   e-mail: juh...@as...
   www.astro.helsinki.fi/~jschultz
   Observatory
   P.O. Box 14
   FIN-00014 University of Helsinki
   FINLAND

On Mon, 7 Feb 2005, Jette Krause wrote:

>Hallo,
>
>I need to plot some curves and a data point into one diagram. I can't 
>find out how to tell Gnuplot to use different linestyles for different 
>items ("lines" for the curves and "points" for data) when plotting from 
>a python script.
>
>E.g., if I write
>
>g=Gnuplot.Gnuplot()
>g('set data style lines'),
>
>the plotting command for the point is not executed (naturally...).
>But is there a way to give a data style different from the general on, 
>e.g in the plotting command?
>
>I tried things like
>g.plot(a,b,c,k with points)
>where a to c are the curves and k should be the point, but it does not work.
>
>I would be grateful for any help.
>
>Greetings, Jette
>
>
>
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Re: [Gnuplot-py-users] Problem with plotting different linestyles

[Fernando P. <Fer...@co...>]

Jette Krause wrote:
> Hallo,
> 
> I need to plot some curves and a data point into one diagram. I can't 
> find out how to tell Gnuplot to use different linestyles for different 
> items ("lines" for the curves and "points" for data) when plotting from 
> a python script.
> 
> E.g., if I write
> 
> g=Gnuplot.Gnuplot()
> g('set data style lines'),
> 
> the plotting command for the point is not executed (naturally...).
> But is there a way to give a data style different from the general on, 
> e.g in the plotting command?
> 
> I tried things like
> g.plot(a,b,c,k with points)
> where a to c are the curves and k should be the point, but it does not work.
> 
> I would be grateful for any help.

I've moved away from gnuplot to matplotlib, but here's some old code which can 
get you going:

if 0:
      #transcript = utils.TranscriptPrint('transcript_%s.ref' %
max_band,start=True)
      print "*** OLDEST (REFERENCE) NATURAL-SCALE IMPLEMENTATION"
      all_r = {}
      lft_r = {}
      #phinsc   = poisson._call_nsc_ref(rho,truncate,verbose,all_r,lft_r)
      phinsc   = poisson._call_nsc_ref(rho,truncate,verbose)
      x,pnx    = eval_diag(phinsc)
      nscref   = GP.Data(x,pnx,title='Ref Nat-scale',with='linespoints lt 4')
      errornscr= GP.Data(x,abs(pxx-pnx),title='Slow (ref) Nat-scale error',
                         with='lines lt 4')
      gp.replot(errornscr)
      #transcript.Stop()

if 0:
      # Compare two implementations, which should agree to within roundoff
      gp.plot(x,N.absolute(pnx-px))
      gp.replot(GP.Func('1e-16',with='lines lt 2'))

if 0:
      print "*** REFERENCE 2-SCALE IMPLEMENTATION"
      phi2sc   = poisson._call_2sc(rho)
      x,p2x    = eval_diag(phi2sc)
      twosc    = GP.Data(x,p2x,title='2-scale',with='linespoints lt 5')
      error2sc = GP.Data(x,abs(pxx-p2x),title='Two-scale error',
                         with='lines lt 5')

Cheers,

f