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How not to plot the returning lines

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  How not to plot the returning lines vuokkosetae@gmail.com - 2015-02-07 17:37 -0800
    Re: How not to plot the returning lines Hans-Bernhard Bröker <HBBroeker@t-online.de> - 2015-02-08 15:55 +0100
      Re: How not to plot the returning lines vuokkosetae@gmail.com - 2015-02-08 07:52 -0800

#2742 — How not to plot the returning lines

Hi!

I have data which has increasing value in first column (x-axes data)and
I want to plot the second column on y-axes. Now when the counter wraps
I get also wrap in my plot. The line returns back to the left and
I don't want that.

I want the same red line to draw many times those lines,
not start to breaking the file and searching the counter wrap.

What is the magical plot only forward command?

I have done small test case.

test.data
0 1
1 2
2 3
3 4
0 3   
1 4 
2 5 
3 1 

other.data
0 1 3
1 2 4
2 3 5
3 4 1

test.gnuplot

set style data lines
set terminal postscript eps color
set output "test.eps"
plot 'test.data' using 1:2 title "I get this", \
'other.data' using 1:2 title "I want this", \
'' using 1:3 title "and this"

Best regards,
Hannu Vuolasaho

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#2743

Am 08.02.2015 um 02:37 schrieb vuokkosetae@gmail.com:
> Hi!
>
> I have data which has increasing value in first column (x-axes data)

That's actually a lie.  If it were true, you wouldn't have the problem 
you perceive.

To remove the problem, you'll have to actually make true that claim of 
monotonicity.  A bigger counter would help because it wouldn't wrap 
around so early.  Sorting the data would remove the condition, too, but 
it might not be what you want.  Or you could just introduce blank lines 
at the wrap-back positions.

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#2744

On Sunday, February 8, 2015 at 4:55:58 PM UTC+2, Hans-Bernhard Bröker wrote:
> Am 08.02.2015 um 02:37 schrieb vuokkosetae@gmail.com:
> > Hi!
> >
> > I have data which has increasing value in first column (x-axes data)
> 
> That's actually a lie.  If it were true, you wouldn't have the problem 
> you perceive.

Alright. You caught me. It is a lie. I have several datasets after each other.

> 
> To remove the problem, you'll have to actually make true that claim of 
> monotonicity.  A bigger counter would help because it wouldn't wrap 
> around so early.

Not going to happen. This data comes through serial pot from 8-bit MCU and 16-bit counter is biggest available.
> Sorting the data would remove the condition, too, but 
> it might not be what you want.

Sorting removed horizontal lines but introduced vertical zig-zag.

> Or you could just introduce blank lines at the wrap-back positions.

That did the trick. And searching manual with "blank line" gave good explanation. Thank you.

Best regards,
Hannu Vuolasaho

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