[rrd-users] (right) alignement in 1.4.2

[Jean-Yves Avenard]

Hi

2010/1/26 Tobias Oetiker <tobi at oetiker.ch>:

>
> try this:
>
> Index: src/rrd_graph.c
> ===================================================================
> --- src/rrd_graph.c     (revision 2011)
> +++ src/rrd_graph.c     (working copy)
> @@ -1730,6 +1730,7 @@
>                 prt_fctn != 'r' &&
>                 prt_fctn != 'j' &&
>                 prt_fctn != 'c' &&
> +                prt_fctn != 'u' &&
>                 prt_fctn != 's' && prt_fctn != '\0' && prt_fctn != 'g') {
>                 free(legspace);
>                 rrd_set_error
> @@ -1839,6 +1840,8 @@
>                     leg_y += im->text_prop[TEXT_PROP_LEGEND].size * 1.8;
>                 if (prt_fctn == 's')
>                     leg_y -= im->text_prop[TEXT_PROP_LEGEND].size;
> +                if (prt_fctn == 'u')
> +                    leg_y -= im->text_prop[TEXT_PROP_LEGEND].size *1.8;
>
>                 if(calc_width && (fill > legendwidth)){
>                     legendwidth = fill;
> Index: doc/rrdgraph_graph.pod
> ===================================================================
> --- doc/rrdgraph_graph.pod      (revision 1967)
> +++ doc/rrdgraph_graph.pod      (working copy)
> @@ -365,8 +365,15 @@
>  A special case is COMMENT:B<\s> which inserts some additional vertical space
>  before placing the next row of legends.
>
> -If you are using the proportional font in your graph, you can use tab
> -characters or the sequence B<\t> to line-up legend elements. Note that
> +If you want to have left and right aligned legends on the same line use COMMENT:B<\u>
> +to go one line back like this:
> +
> + COMMENT:left\l
> + COMMENT:\u
> + COMMENT:right\r
> +
> +When using a proportional font in your graph, the tab
> +characters or the sequence B<\t> will line-up legend elements. Note that
>  the tabs inserted are relative to the start of the current legend
>  element!

Brilliant!

works perfectly.
same graph, two different size
http://htpc.avenard.org/power/?graph=1&view=day&date=24/01/2010&hour=23&minute=59
http://htpc.avenard.org/power/?graph=1&view=day&date=24/01/2010&hour=23&minute=59&small=1

While we are on new features ; one thing I would be really keen to see
is the ability to have two different scales so you can plot on the
same image two different graphs.
One immediate application for me would be to show the impact of
temperature to solar panel efficiency. Plotting temperature along side
power output would be fantastic.
So one the left side of the graph I would have the scale in kWh (or MJ
to please some here) and on the other side I would have the scale in
degres.

I saw that this was added as a feature request on trac ; but if you
ever found some free time :)

Alternatively, I would be happy to look at the code and implement this
myself ; if you could give me some pointers on which files I should
look into

Thanks once again
Jean-Yves