Re: Plot label problem

On Thu, Nov 06, 2008 at 10:35 -0700, Tolga Guver wrote:
> Hi,
> 
> I am trying to create a multiplot using the tool multiplot in ISIS.
> However i have a problem with the x and y axis labels.
> 
> It starts writing the label from the central point of the axis with a 
> left justification, so the final text does not look like centralized.
> Instead it just starts from that central point, which of course if the 
> text is long enough does not look nice.
> 
> I used
> 
> xlabel("Time (s)");
> ylabel("Flux");
> 
> in ISIS commands.
> i also tried
> 
> _pglab and label version of that as well
> 
> they all did the same thing.
> With the usual spectral plots, i don't have that problem they just look 
> perfect.
> I was wondering if there is something i can do for that. I can send the 
> whole plot script if needed.
> 
> thank you very much
> tolga


For custom label positioning relative to the plot viewport, you
can use the low-level pgplot function _pgmtxt.  This function
is documented at

  http://www.astro.caltech.edu/~tjp/pgplot/subroutines.html#PGMTXT

I've appended an example of using _pgmtxt with multiplot.

Alternatively, _pgptxt allows drawing text at an arbitrary
angle at a position specified in the (X,Y) coordinates of the
current plot. The isis function xylabel() is a wrapper around
this pgplot function.

Thanks,
-John


  variable id = plot_open ("plot.ps/cps");
  multiplot (ones(3));

  variable x = [1:10];
  plot(x,x);
  plot(x,x^2);
  plot(x,x^3);

  multiplot (1);
  _pgmtxt ("L", 3, 0.25, 0.0, "A long Y-axis label that spans several plots");

  plot_close (id);

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