Re: Persistent confusion about gnuplot -persist

[Tatsuro M. <tma...@ya...>]

----- Original Message -----

> From: Ethan A Merritt 
> To: gnuplot-beta; Tatsuro MATSUOKA 
> Cc: 
> Date: 2014/9/24, Wed 03:23
> Subject: Re: Persistent confusion about gnuplot -persist
> 
> On Tuesday, 23 September, 2014 17:54:44 Tatsuro MATSUOKA wrote:
>> 
>>  ----- Original Message -----
>>  > From: Ethan A Merritt
>>  > To: gnuplot-beta
>>  > Cc: 
>>  > Date: 2014/9/23, Tue 03:43
>>  > Subject: Persistent confusion about gnuplot -persist
>>  > 
>>  > 
>>  > There have recently been several queries, bug reports, support 
> requests,
>>  > and so on that involve misunderstanding about what to expect from 
>>  > gnuplot -persist    or    set term <foo> persist.
>>  > 
>>  > People seem to assume that if the window is still showing on the 
> screen,
>>  > they should be able to pan/zoom/unzoom and so on using the mouse
>>  > buttons or the widgets at the top of the terminal GUI.  
>>  > 
>>  > The documentation is quite explicit that this isn't true in 
> general because
>>  > such operations require the main program to recalculate and redraw the
>>  > plot, which cannot happen in -persist mode because the main program
>>  > has already exited.     As it happens, the wxt terminal back in 
> version 4.4
>>  > was an exception to this general case.  I guess people remember that 
>>  > exception and want to generalize it to all current terminals.
>>  > 
>>  > That is, people expect this
>>  > 
>>  >     [1] gnuplot -persist -e "plot sinh(x); exit"
>>  > 
>>  > to act like this
>>  > 
>>  >     [2] gnuplot -e "plot sinh(x); pause mouse close; exit" 
> &
>>  > 
>>  > The question is, should we continue pointing to the documented 
> limitations
>>  > of "persist", or should we change what persist does to match 
> 
>>  > people's
>>  > expectation?  
>>  > 
>>  > So far as I know [2] works properly for the x11, wxt, and qt terminals
>>  > under linux.  I don't know about MSWin (win) or OSX (aqua).
>>  > 
>>  > Assuming that [2] can be made to work correctly on all three of these
>>  > platforms, should we reimplement "set term ... persist" and 
>>  > "gnuplot -persist"
>>  > to act like this instead of retaining the current implementation?
>>  >
>> 
>> 
>>  I have tested on windows (cvs changelog date is 2014-09-20)
>> 
>>  gnuplot -e "plot sinh(x); pause mouse close; exit"
>> 
>> 
>>  works as expected for wxt and windows terminal.
> 
>>  But for qt terminal, gnuplot exit immediately and we cannot use mouse.
> 
> Does "pause mouse close" work correctly from an interactive session 
> using qt?    
> 
>     Ethan


On windows using qt  
"pause mouse close" does not work correctly.


The plot does not respond any mouse and keyboard operation.
By closing plot by close button top right position, "gnuplot>" prompt does not appear.

BTW, on windows using wxt and windows  
"pause mouse close" works correctly.

 
Tatsuro