Re: Scale problem using plot()

[Ben Abbott]

On Oct 25, 2010, at 7:16 PM, Ben Abbott wrote:

> On Oct 25, 2010, at 4:12 PM, Ben Abbott wrote:
> 
>> On Oct 25, 2010, at 4:03 PM, Michael D Godfrey wrote:
>> 
>>> On 10/25/2010 12:55 AM, Ben Abbott wrote:
>>>> but what do you imply is wrong with the gnuplot version?
>>>> 
>>> The ymin should appear as 56, not  blank.  But, as you point out matlab does
>>> it wrong, too.  In other cases gnuplot is like fltk in that it draws below
>>> the xaxis line.  I hope that the fix to fltk will also fix gnuplot.  If not,
>>> I will post a more complex case where both fltk and gnuplot draw
>>> junk below the xaxis.
>>> 
>>> Michael
>> 
>> The scaling of the axes is determined by the "xlim" and "ylim" property 
>> values. The values of the tickmarks aren't intended to serve that function. 
>> Meaning they are not treated as line objects when the {x,y}limmode is 
>> "auto".  So, I think gnuplot and matlab are doing the what is intended (i.e. 
>> no bug) ... at least they seem to do the correct thing for this example.
>> 
>> If you can give me an example where gnuplot doesn't clip the tick marks, 
>> grid lines its children, I can take a look at fixing that.
>> 
>> I've cc'd Shai. Perhaps, it is a simple task to crop the tick marks and grid 
>> lines for the fltk backend.
>> 
>> Ben
> 
> I took a look at the sources and put a patch together for gl-render.cc
> 
> I'm skeptical I got everything correct, but it does compile and resolves the 
> problem with the grid, tickmarks, and ticklabels being drawn beyond the axis 
> limits.
> 
> Can someone take a look and let me know I haven't done anything t0o messy ... 
> or worse, broke something.
> 
> Ben
> 
> <tick_fix.patch>

Ok, I did miss something. The z-axis grid lines weren't cropped. I've attached 
an update ... a changeset this time.

Ben

changeset.patch
Description: Binary data