Re: where to initialized property defaults?

[Ben Abbott]

Shai,

Thanks for the prompt reply.

When you have a moment, please look at setting a default for a vector,  
such as root.screensize.

I don't see how to initialize the values unless they each have the  
same value. I'd like to do something like ...

> > set (0, "screensize", [1, 1, 1440, 900])

... but I don't see how.

Ben


On Jan 3, 2009, at 2:31 PM, Shai Ayal wrote:

> Ben,
>
> The place to set default properties is in src/graphics.h.in.
> properties are defined and assigned default values inside
> BEGIN_PROPERTIES/END_PROPERTIES blocks for each graphics object type
> (e.g. figure, axes, etc...).
> these are system-wide defaults and are not backend dependant. As you
> noticed, the root figure was neglected during our work and has very
> little properties.
> Anyway, you can find examples of how to specify properties and their
> values in the file, just look at axes and figure. You can also add
> more elaborate inital values in the init member for each object.
> The graphics.h.in file is parsed by the genprops.awk script during
> compile to produce the actual graphics.h and the graphics-props.cc
> files which contain the definitions for the properties plus all the
> appropriate get/set functions. The awk script also has some
> documentation inside.
>
> Shai
> p.s. sorry for not being able to contribute more than pointers ...
>
>
> On Sat, Jan 3, 2009 at 9:10 PM, Ben Abbott <address@hidden> wrote:
> > Michael/Shai, I've copied you specifically because of your work on  
> > the
> > backend.
> >
> > I've been investing some effort improving the gnuplot backend's  
> > support of
> > root/figure/axes/text/etc properties.
> >
> > One rather significant difficulty is where/how many of the default  
> > property
> > values are to be set.
> >
> > In graphics.h.in it is simple enough to initialize each index of  
> > vector
> > associated with a property to a scalar value ... but what is to be  
> > done with
> > properties like figure.papersize, figure.paperposition,  
> > root.screensize,
> >
> > In my octaverc I set several property defaults. See below ...
> >
> > if compare_versions (version, "3.1.0", ">=")
> > set (0, "defaultaxesfontname", "Helvetica")
> > set (0, "defaultaxesfontsize", 14)
> > set (0, "defaultaxesinterpreter", "tex")
> > set (0, "defaultaxesxtick", [0:0.2:1])
> > set (0, "defaultaxesytick", [0:0.2:1])
> > set (0, "defaultaxesztick", [0:0.2:1])
> > set (0, "defaultaxesxtickmode", "auto")
> > set (0, "defaultaxesytickmode", "auto")
> > set (0, "defaultaxesztickmode", "auto")
> > set (0, "defaultaxesactivepositionproperty", "outerposition")
> > set (0, "defaultfigurepapertype", "usletter")
> > set (0, "defaultfigurepapersize", [8.5 11])
> > set (0, "defaultfigureposition", [440 314 560 420])
> > set (0, "defaultfigurepaperposition", [0.25, 2.5, 8, 6])
> > set (0, "screensize", [1, 1, 1440, 900])
> > set (0, "screenpixelsperinch", 1440/14)
> > edit editinplace true
> > edit home .
> > endif
> >
> > This should obviously be done at a lower level. Some of this is  
> > already
> > being handled in gnuplot_drawnow.m.
> >
> > I'm not sure where, or how, such defaults should be set in the  
> > sources, but
> > having gnuplot_drawnow.m handle it is obviously bad practice.
> >
> > Might someone be up to the task of taking this on, or offering  
> > guidance for
> > the c++ deficient like myself? I don't see where in the sources  
> > xlim, ylim
> > are set, so perhaps this is already in place for axes?
> >
> > Ben