Re: Clipping of arrows buggy

[Daniel J S. <dan...@ie...>]

Ethan Merritt wrote:

>On Monday 17 January 2005 01:50 pm, Harald Harders wrote:
>  
>
>>In large splots with screen size above 1, arrows that are totally outside
>>the screen coordinates 1,1 are not plotted, see example:
>>    
>>
>
>Harald:
>
>I see no difference in the output before applying your patch
>and after applying your patch.  What, exactly, is the change
>supposed to be?
>  
>

I'm not understanding this one either, Harald.  I've run your example, 
and the arrows that are visible make sense.  They are specified relative 
to the screen and come out looking the same in all plots.  However, the 
plots are extended past the visible part of the plot.  I think I 
understand that the arrow you've plotted

set arrow from screen 1.1,0 rto screen 0,.5 as 1

doesn't appear.  However, that shouldn't appear because no portion of it 
lies within the visible part of the image.  On the other hand, it still 
doesn't appear even if a *portion* of the arrow should appear on the 
screen.  So that may be your point, no?  For example, changing the above to

set arrow from screen 1.1,0 rto screen -.5,.5 as 1

should give a portion of an arrow.  That should be made to work fairly 
easy.  Afterall, the enlarged splots and plots show only a portion of 
the axis on the screen.  The arrows shouldn't be done any differently.  
Can the conditional test be removed altogether?  The clipping should be 
done at a lower level I would think.

Dan

PS:  One other thing I notice about splot is that the tics appear right 
up against the x and y axes.  The z tics look nice.