gnuplot-info

[Gnuplot-info] A weird case with implicit columns

[Craig D. <def...@bo...>]

Some 'with' modifiers include implicit dimensions in ASCII mode, others don't.



For example:

	plot '-' using 1 with lines

works, while 

	plot '-' using 1:2 with yerrorbars

does not.



I think this is a bug, since the equivalent in binary mode:

	plot '-' binary array=(5) format="%double%double" using 1:2 with yerrorbars

works fine.

Re: [Gnuplot-info] A weird case with implicit columns

[sfeam (E. Merritt) <eam...@gm...>]

On Thursday, 28 February 2013, Craig DeForest wrote:
> Some 'with' modifiers include implicit dimensions in ASCII mode, others don't.
> 
> 
> 
> For example:
> 
> 	plot '-' using 1 with lines
> 
> works, while 
> 
> 	plot '-' using 1:2 with yerrorbars
> 
> does not.
> 
> 
> 
> I think this is a bug, since the equivalent in binary mode:
> 
> 	plot '-' binary array=(5) format="%double%double" using 1:2 with yerrorbars
> 
> works fine.

The "columns" in binary mode are unconnected with any reality
that my poor brain can comprehend.  I am surprised that the
above command produces anything useful. I would have expected
it to produce a uniform grid (column 1 = x coord; column 2 = y coord)
at z=0.  That's what `help binary` describes, anyhow.

	Ethan

Re: [Gnuplot-info] A weird case with implicit columns

[Dima K. <gn...@di...>]

sfeam (Ethan Merritt) <eam...@gm...> writes:

> On Thursday, 28 February 2013, Craig DeForest wrote:
>> Some 'with' modifiers include implicit dimensions in ASCII mode, others don't.
>> 
>> 
>> 
>> For example:
>> 
>> 	plot '-' using 1 with lines

This makes sense. 'help lines' says that it understands single-column data.


>> 	plot '-' using 1:2 with yerrorbars
>> 
>> does not.

This makes sense too. 'help yerrorbars' doesn't say anything about
working with 2-column data. It'd probably be good to add that, but at
least it does what it says.


>> I think this is a bug, since the equivalent in binary mode:
>> 
>> 	plot '-' binary array=(5) format="%double%double" using 1:2 with yerrorbars
>> 
>> works fine.

That's weird. :) 'help binary format' clearly says that this should make
2 columns available, so I'd expect this to fail same as above. I agree;
this sounds like a bug. I'm seeing a different failure, though: my
gnuplot segfaults. Craig: can you attach the data file you're using?

dima

Re: [Gnuplot-info] A weird case with implicit columns

[Craig D. <def...@bo...>]

Thanks!

On Mar 4, 2013, at 8:17 PM, sfeam <sf...@us...> wrote:

> On Thursday, February 28, 2013 09:59:53 PM Craig DeForest wrote:
>> Some 'with' modifiers include implicit dimensions in ASCII mode, others
>> don't.
>> 
>> 
>> 
>> For example:
>> 
>> 	plot '-' using 1 with lines
>> 
>> works, while
>> 
>> 	plot '-' using 1:2 with yerrorbars
>> 
>> does not.
> 
> I've added that combination (implicit x with yerrorbars) for
> 4.7 and 4.6.2
> 
> 	Ethan
> 
>