Re: [Gnuplot-info] with image error msg: "Number of pixels cannot be factored"

[Philipp K. J. <ja...@ie...>]

On Tue, 23 Sep 2014 15:13:20 -0700
Ethan Merritt <eam...@gm...> wrote:

What I infer from that demo is that one needs 
to choose one of two (text) file formats:
- matrix format (w/o explicit coordinates)
- the "old style" splot format, with scan
  lines separated by blank lines.

I had actually hoped that the image format 
would allow me to randomly address individual 
"pixels" by their coordinates. Is that not
so?

Best,

		Ph.



> On Tue, Sep 23, 2014 at 2:45 PM, Philipp K. Janert <ja...@ie...>
> wrote:
> >
> > When trying to plot the following file:
> >
> > 1       1       1
> > 1       2       2
> > 2       1       3
> > 2       2       4
> > 3       3       1
> > 3       1       0
> > 3       2       0
> > 1       3       0
> > 2       3       0
> >
> > using
> >
> > plot "file" u 1:2:3 w imag
> >
> > I received the following warning message:
> >         warning: Number of pixels cannot be factored into integers
> >         matching grid. N = 9  K = 2
> >
> > The plot showed just the borders and the
> > colorbox, but none of my data.
> >
> > What am I doing wrong?
> 
> Please see
>     http://gnuplot.sourceforge.net/demo/heatmaps.html