gnuplot-beta

RC2 : Problems with multiplot ... spacing

[Philipp K. J. <ja...@ie...>]

Two issues:

1) The new (?) "spacing" option is not documented 
at all. I can vaguely guess what it does, but not
entirely. 

2) Using "spacing" repeatedly causes problems.

Consider this set of commands

set multiplot layout 2,1 spacing 0.1
plot sin(x)
plot cos(x)
unset multi
reset

If I put them into a file and then load them, the
graph comes up just fine. If I then try to load 
them again, the graph is blank, and I get the
following error msg:

         "m.gp", line 3: warning: Terminal canvas area too small to
hold plot. Check plot boundary and font sizes.
         "m.gp", line 4: warning: Terminal canvas area too small to
hold plot. Check plot boundary and font sizes.

BUT if I remove the "spacing 0.1" option from the
multiplot command, I can load the file repeatedly,
without any problems. 

Observed with RC2 and the wxt terminal.

Re: RC2 : Problems with multiplot ... spacing

[Christoph B. <us...@be...>]

Zitat von "Philipp K. Janert" <ja...@ie...>:
>
> 1) The new (?) "spacing" option is not documented
> at all. I can vaguely guess what it does, but not
> entirely.

There is a small paragraph including an example at the end of the `set  
multiplot` section in the documentation.

The `spacing` option was thought to be used together with the  
`margins` option. The `margins` option sets all outer margins of the  
multiplot area, whereas `spacing` gives the vertical and/or horizontal  
spacing between two plots.

Unfortunatly, the example as given in the documentation:

set multiplot layout 2,2 columnsfirst margins 0.1,0.9,0.1,0.9 spacing 0.1
set ylabel 'ylabel'
plot sin(x)
set xlabel 'xlabel'
plot cos(x)
unset ylabel
unset xlabel
plot sin(2*x)
set xlabel 'xlabel'
plot cos(2*x)
unset multiplot

doesn't work anymore (it used when the patch was checked in). That  
must have been broken.

Also: I'm not sure, if had had thought of using `spacing` without also  
setting `margins` and if this is possible. In any case I'll check if  
using `spacing` alone could work or insert an appropriate error  
message it one of the two options isn't set.


Thanks for testing!

Christoph

Re: RC2 : Problems with multiplot ... spacing

[Philipp K. J. <ja...@ie...>]

On Fri, 07 Nov 2014 10:55:43 +0100
Christoph Bersch <us...@be...> wrote:

> Zitat von "Philipp K. Janert" <ja...@ie...>:
> >
> > 1) The new (?) "spacing" option is not documented
> > at all. I can vaguely guess what it does, but not
> > entirely.
> 
> There is a small paragraph including an example at the end of the
> `set multiplot` section in the documentation.
> 
> The `spacing` option was thought to be used together with the  
> `margins` option. The `margins` option sets all outer margins of the  
> multiplot area, whereas `spacing` gives the vertical and/or
> horizontal spacing between two plots.

Yes, I saw that paragraph, but it did leave me a
little in the dark. I guess "spacing" is using the
same units as "margins"? 

[snip]

> 
> Also: I'm not sure, if had had thought of using `spacing` without
> also setting `margins` and if this is possible. In any case I'll
> check if using `spacing` alone could work or insert an appropriate
> error message it one of the two options isn't set.
> 

I don't think it has anything to do with the 
concurrent use (or non-use) or "margin".

It is also weird that gnuplot gets itself so
wedged that even a "reset" does not help - I
have to quit and restart after every 
"mulitplot ... spacing".

(I really like the feature, otherwise - it solves
a recurrent problem with multiplot.)

Best,

		Ph.

Re: RC2 : Problems with multiplot ... spacing

[<pl...@pi...>]

On 11/07/14 16:35, Philipp K. Janert wrote:
> On Fri, 07 Nov 2014 10:55:43 +0100
> Christoph Bersch <us...@be...> wrote:
>
>> Zitat von "Philipp K. Janert" <ja...@ie...>:
>>>
>>> 1) The new (?) "spacing" option is not documented
>>> at all. I can vaguely guess what it does, but not
>>> entirely.
>>
>> There is a small paragraph including an example at the end of the
>> `set multiplot` section in the documentation.
>>
>> The `spacing` option was thought to be used together with the
>> `margins` option. The `margins` option sets all outer margins of the
>> multiplot area, whereas `spacing` gives the vertical and/or
>> horizontal spacing between two plots.
>
> Yes, I saw that paragraph, but it did leave me a
> little in the dark. I guess "spacing" is using the
> same units as "margins"?
>
> [snip]
>
>>
>> Also: I'm not sure, if had had thought of using `spacing` without
>> also setting `margins` and if this is possible. In any case I'll
>> check if using `spacing` alone could work or insert an appropriate
>> error message it one of the two options isn't set.
>>
>
> I don't think it has anything to do with the
> concurrent use (or non-use) or "margin".
>
> It is also weird that gnuplot gets itself so
> wedged that even a "reset" does not help - I
> have to quit and restart after every
> "mulitplot ... spacing".
>
> (I really like the feature, otherwise - it solves
> a recurrent problem with multiplot.)
>
> Best,
>
> 		Ph.
>

Yes, this is worth getting working correctly and fully documenting. I 
long ago gave up using multiplot due to the amount of real estate that 
it wasted in handling margins and spacing around graphs.

I've usually ended up doing collation in a graphics processing tool on 
individual gnuplot graphs.

There was a lot of grumbling from Octave devs about this too, who use gp 
as a plotting backend.

Peter.