Re: x11.trm terminal options

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

Hans-Bernhard Broeker wrote:

>On Thu, 23 Oct 2003, Daniel J Sebald wrote:
>
>[...]
>  
>
>>2)  If you think the above problem should be modified,
>>do you feel that
>>
>>a) graphics windows should not appear until something
>> is actually plotted to them
>>    
>>
>
>Yes.  A gnuplot X11 graph window serves no purpose whatsoever until a
>graph is plotted into it, so there's no point displaying it until that
>point in time.
>

OK.  Seems agreement is emerging on that.  So, gplt_x11 will
create the window in memory (because of all the plot->window
references) but not display it until something is plotted.  An
alternative can be investigated later, e.g.,  waiting until 'G'
(prepare plot) is sent to do the actual individual plot update.

>>With regard to 2, note that if one types "set output 'name'"
>>followed by no plot commands, but then "set output", the
>>file 'name' will be created.  Is there an analogy here between
>>a file and a window?
>>    
>>
>
>Not really.  Arguably, that behaviour of 'set output' is wrong itself.
>

I will check if that can be modified easily.  It may not
be as entwined as gplt_x11.c.

>>3)  Looking at the X11_options() in x11.trm it is very similar
>>to other parsing/interpretting schemes, however it doesn't have
>>the many checks for repeated entry, valid entry, etc.  Some
>>commands are sent to gplt_x11 even before the end of parsing.
>>    
>>
>
>That's a bug, then.  But AFAICS, the only command sent to gplt_x11.c
>before parsing of the options is finished is an update of the window
>number.
>  
>

But why even update that?  How about the precedence idea
of waiting until the line is verified as valid, then if "reset", reset;
if "number", number; the rest?  That way
"set term x11 reset 19 noraise" is the same as
"set term x11 noraise 19 reset".  Also, "reset" should set the
number back to 0, unless a number is also given.  This is a
cleaner and easier way of doing things I think.  Should take
ten minutes.

Dan


-- 

Dan Sebald
email: daniel . sebald @ ie ee . o rg
URL: ht tp://acer-access.c om/~dsebald @ acer-access.c om/