Re: Proposal: Saving graphs from Qt and wxt terminals

[Ethan A M. <sf...@us...>]

On Friday, 24 October, 2014 09:10:51 Petr Mikulik wrote:
> > I think it would be wonderful if both current
> > interactive terminals (Qt and wxt) would allow
> > the user to "save" the current graph to file in
> > a range of file formats (basically PNG and PDF).
> 
> This reminds me: there is an undocumented command for printing
> the current graph (i.e. for showing a Print(er) dialog):
>  	screendump
> This, however, works for the "windows" terminal only, otherwise
> gnuplot says
>  	screendump not implemented
> 
> Currently:
> - Windows terminal has icons to:
>  	- print the graph
>  	- save it as EMF
> - OS/2 pm terminal has menu item for:
>  	- print the graph
> - Qt has a tiny arrow with a menu for:
>  	- print the graph
>  	- export the graph to png, svg, image
> 
> Some ideas:
> - The screendump command could work for Qt as well.

How would this be different from the existing qt->png output?

> - This command should be documented.
> - Cannot wxt have the same export/print icons as Qt?

The Qt library provides conversion routines for png, pdf, and svg.

I am not so familiar with the wxt library, but so far as I can see from the
available routines the closest equivalent would end up doing exactly the
same thing as "set term pngcairo; replot" for png output.
Same for pdf ouput.
We don't have a svgcairo terminal, however.

> - Generalize it as "screendump <terminal name>"?

Wouldn't that be "screendump 'filename'"?

	Ethan