SVG may take a long time to display in IRuby in a browser

[kojix2]

If you try to display a scatter plot of data that contains a large number of samples, the browser may freeze.

Numo.noteplot
  plot SomeBigData
end

In this case, he PNG format may be more appropriate than the SVG format.

Of course, the SVG format is good for displaying small sized data. So there is no best format for every situation.

One solution is to be able to specify the format.

Numo.noteplot
  set :term, :png
  plot SomeBigData
end

Numo.noteplot(format: :png)
  plot SomeBigData
end

Numo::Noteplot.set_format :png

etc...

But I do not know if this is really good.

[kojix2]

This is a lazy way

Numo.gnuplot
  set :term, :png
  set :output, "hoge.png"
  plot SomeBigData
end
open "hoge.png"

[zheng-yongping]

@kojix2 'pngcairo' may be best terminal type for every situation.

pngcairo:

png:

[kojix2]

This issue is old and will be closed. When I think about it, this is not a problem that should be handled on the numo-narray side. My bad.