On Thu, May 1, 2008 at 9:20 AM, Sand Wraith <[EMAIL PROTECTED]> wrote:
>
>
>
>
>  William Stein wrote:
>  > On Thu, May 1, 2008 at 8:31 AM, Sand Wraith <[EMAIL PROTECTED]> wrote:
>  > >
>  > >
>  > >  Hi! I use notebooks, and for example i want to plot cosine function:
>  > >
>  > >  plot(cos(x),1,2)
>  > >
>  > >  in output i see graphic which have x in range near [-1.5,2.5]. but
>  > >  there is no information for me when x is in interval [-1.5,1] and
>  > >  [2,2.5], so i do not want to see it in output graphic.
>  > >
>  > >  and another example: i have hight-frequency cosine function, and i
>  > >  want to see it on interval x in [1,1.1]:
>  > >  plot(cos(x*200000),1,1.1)
>  > >  and i see x in [-1,1.25] so i can not "zoom" cosine function.
>  > >
>  >
>  > This is a *bug* in the plotting function that we are tracking here:
>  >    http://trac.sagemath.org/sage_trac/ticket/2754
>  >
>  > There is fortunately a workaround, which is to explicitly
>  > specify the ranges in the show command:
>  >
>  > sage: plot(cos(x),1,2).show(xmin=1,xmax=2)
>  >
>  > sage: 
> plot(cos(x*200000),1,1.1,plot_points=10000,thickness=.1).show(xmin=1,xmax=1.1)
>  >
>  >  -- William
>
>  thank you!  at least it is works now )) and i have another question:
>  can image resolution be changed? (all images now are 600*370)
>

Yes. Use the figsize= option, which takes "inches" as input:

sage: plot(cos(x),1,2).show(xmin=1,xmax=2, ymin=-0.5,ymax=0.5, figsize=[12,15])

Type

sage: plot?

for more help.

William

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