Re: plot templates and options lists for set, plot etc.

[Benjamin Lindner]

Thorsten Meyer wrote:
> Hi,
>
> at work, I often have to generate the same kind of plots with particular labels,
> line styles, etc.. I would like to create templates for these plots. For this, I
>  collect plot options in a struct like it is returned by the get function. E.g.
>   style = struct("linewidth", 2, "marker", "x", "markersize", 12);
>
> Now, I want to pass these options to the plot function. At the moment, I do it
> like this:
>   plot(1:5, 5:-1:1, {fieldnames(style)'{:}; struct2cell(style)'{:}}{:});
>
> Or:
>   h=plot(1:5, 5:-1:1);
>   set(h, {fieldnames(style)'{:}; struct2cell(style)'{:}}{:});
>
> Does anyone know a more elegant way of converting a structure to a cs-list of
> key, value, ...?

Easier to deal with are cell arrays in the first place, e.g.
  style = { "linewidth", 2, "marker", "x", "markersize", 12 };
  plot(1:5, 5:-1:1, style{:} );

If you want to stick with structures I don't now of a more "elegant" way.

> Also, I would like to wrap this transformation into a function. I tried it like
> this (in octave compiled from the current tip):
>
> function varargout = struct2options (structure)
>   varargout = {fieldnames(structure)'{:}; struct2cell(structure)'{:}};
>   nargout
> endfunction

this should read

function c = struct2opt(s)
   c = reshape(cat(2, fieldnames(s), struct2cell(s)).',1,[]);
endfunction

then
   plot(1:5, 5:-1:1, struct2opt(style){:})
should work

benjamin