Re: help with legend

[Valmor de Almeida]

On 01/15/2012 08:10 PM, Ben Abbott wrote:
> 
> On Jan 15, 2012, at 2:35 PM, Ben Abbott wrote:
> 
>> On Jan 15, 2012, at 12:48 PM, Valmor de Almeida wrote:
>>
>>> Hello,
>>>
>>> I am trying to customize legends on a plotyy axes/lines but I am not
>>> able to. Here are the commands:
>>>
>>> [ax, h1, h2] = plotyy(x1,y1, x2,y2, @plot, @plot);
>>>
>>> legend(h1,y1Label,"location",'south',"fontname",'Helvetica');
>>>
>>> legend(h2,y2Label,"location",'northeast',"fontname",'Helvetica');
>>>
>>> Only the first legend shows up and the font is Courier which I am unable
>>> to change. Also the text in the legend precedes the key which I would
>>> like to invert using 'right' but it does not work either.
>>>
>>> I am using octave-3.4.0. Would anyone have an example?
>>>
>>> Thanks,
>>>
>>> --
>>> Valmor
>>>
>>> PS: In the above command I also tried legend(ax(1),...) and it does not
>>> make a difference.
>>
>> Octave tries to duplicate Matlab's implementation of plotyy and legend. 
>>
>>      x1 = 0:5:10;
>>      x2 = 0:10;
>>      y1 = rand (size (x1));
>>      y2 = rand (size (x2));
>>      [ax, h1, h2] = plotyy (x1, y1, x2, y2, @plot, @plot);
>>      y1Label = "y1";
>>      y2Label = "y2";
>>
>> The command below should produce the desired legend (please check, the 
>> implementation may have changed since 3.4.0).
>>
>>      legend ([h1, h2], {y1Label, y2Label}, "location", "south")
>>
>> The commands below should also work, but currently reverse the legend 
>> entries.
>>
>>      legend ({y1Label, y2Label}, "location", "south")
>>
>>      legend (y1Label, y2Label, "location", "south");
>>
>> I've entered a bug report in the tracker.
>>
>>      https://savannah.gnu.org/bugs/?35314
>>
>> Regarding "Fontsize", the legend function doesn't accept property 
>> names/values as input.
>>
>> To change the fontname, the legend command returns the handle to the legend. 
>> You can change its fontname property directly.
>>
>>      h = legend ([h1, h2], {y1Label, y2Label}, "location", "south")
>>      set (h, "fontname",'Helvetica") 
>>
>> Ben
> 
> I've attached a changeset to the bug-tracker that fixes the legend command so 
> that all three versions below work the same.
> 
>       legend ([h1, h2], {y1Label, y2Label}, "location", "south")
> 
>       legend ({y1Label, y2Label}, "location", "south")
> 
>       legend (y1Label, y2Label, "location", "south");
> 
> The tracker link is below.
> 
>       https://savannah.gnu.org/bugs/index.php?35314
> 
> Ben
> 

Thanks Ben,

None of the forms work for my version 3.4.0.

error:   /usr/share/octave/3.4.0/m/plot/__gnuplot_print__.m at line 170,
column 5

The handle to set the fontname does not work either. Which version are
you using? 3.4.3 is the highest I will be able to go unless I compile
octave myself.

--
Valmor