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all points y2 value undefined!
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Peekay Ex
May 9, 2012, 5:24:12 PM5/9/12
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Hello, I am using Gnuplot 4.6 Patchlevel 0 on Ubuntu, I am new to
Gnuplot but can create simple plots.
I am struggling though to understand why a 'two co-ordinate' plot I
have returns an error 'all points y2 value undefined!'
My plot is (I think) is quite simple.
--snip--
set xtics nomirror
set ytics nomirror
set y2tics
plot "-" u 1:2 t "Foo" axes x1y1 with boxes, "" u 1:3 t "Bar" axes
x1y2 w lines
1996 21 1
1997 161 2
1998 138 5
1999 225 6
2000 344 9
2001 276 5
2002 991 7
2003 995 7
--snip--
And I cannot work out what the error is referring to. Isn't 'y2'
implied by the third column?
Thank you for any help.
Regards
James
Gnuplot but can create simple plots.
I am struggling though to understand why a 'two co-ordinate' plot I
have returns an error 'all points y2 value undefined!'
My plot is (I think) is quite simple.
--snip--
set xtics nomirror
set ytics nomirror
set y2tics
plot "-" u 1:2 t "Foo" axes x1y1 with boxes, "" u 1:3 t "Bar" axes
x1y2 w lines
1996 21 1
1997 161 2
1998 138 5
1999 225 6
2000 344 9
2001 276 5
2002 991 7
2003 995 7
--snip--
And I cannot work out what the error is referring to. Isn't 'y2'
implied by the third column?
Thank you for any help.
Regards
James
Lee
May 15, 2012, 11:18:18 AM5/15/12
to
You can't reuse unline data, either with your attempt at using "" or
by specifying "-" a second time. Save the data in a file if you can.
If it's a big dataset that's streaming and you don't want to store it,
you should be able to use a named pipe or something like that.
Lee Phillips
----------------------------
gnuplot Cookbook:
http://www.amazon.com/gp/product/184951724X?tag=leephillipsor-20
by specifying "-" a second time. Save the data in a file if you can.
If it's a big dataset that's streaming and you don't want to store it,
you should be able to use a named pipe or something like that.
Lee Phillips
----------------------------
gnuplot Cookbook:
http://www.amazon.com/gp/product/184951724X?tag=leephillipsor-20
Hans-Bernhard Bröker
May 15, 2012, 12:57:14 PM5/15/12
to
On 09.05.2012 23:24, Peekay Ex wrote:
> I am struggling though to understand why a 'two co-ordinate' plot I
> have returns an error 'all points y2 value undefined!'
In a nutshell: because that's supposed to be a two-dataset plot, but you
> I am struggling though to understand why a 'two co-ordinate' plot I
> have returns an error 'all points y2 value undefined!'
only supplied one dataset. Please consult "help datafile special" again
to learn the details.
> And I cannot work out what the error is referring to. Isn't 'y2'
> implied by the third column?
'y2' or whatever.
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