Re: [Gnuplot-info] How to represent a 2D plot in 3D

[Ethan A M. <eam...@gm...>]

On Saturday, 22 July 2017 21:10:19 Omamuyovwi Akemu via gnuplot-info wrote:
> Many thanks to your response SIr.
> I've been able to understand how to use the command better to suit my desired plot but I still have two questions.Using the script and data below, I got something meaningful but I do not understand why I had to first duplicate the set of value before the plot appear.

I do not understand what you are saying. 

> Any comment to help me understand will be greatly appreciated. Secondly, is there a way to indicate a constant plot value for a column without necessarily indicate it in file? (Using my data as example, i had type the the constant value 3 in the second column of the data.)

Anything in parenthesis is evaluated as an expression.
That expression can be a simple constant.

    splot  ...  using (3.0):1:3 with lines

If you want each indexed block to have a different x coordinate:

   splot for [i=1:n] 'omom.dat' index i using (i):1:3 w lines lc rgb word(colors,i) 



> #script
> set terminal postscript eps enhanced color
> set encoding iso_8859_1
> set output 'omam.eps'
> set ticslevel 0
> set xlabel 'x'
> set ylabel 'y'
> set zlabel 'z'
> 
> 
> colors = "red red red red red"
> splot for [i=1:words(colors)] 'omam.dat' index i u 2:1:3 w lines lc rgb word(colors,i)
> 
> 
> #file data 6.437  3  -0.747E-05
>   6.537  3  -0.173E-03
>   6.637  3  -0.653E-03
>   6.737  3   0.372E-02
>   6.837  3   0.120E-01
>   6.937  3   0.469E-02
>   7.037  3  -0.579E-02
>   7.137  3   0.104E-01
>   7.237  3   0.952E-01
>   7.337  3   0.806E-01
>   7.437  3   0.877E-03
>   7.537  3  -0.308E-02
>   7.637  3   0.328E-01
>   7.737  3   0.371E-01
>   7.837  3  -0.422E-02
>   7.937  3   0.360E-01
>   8.037  3   0.151E+00
>   8.137  3   0.764E-01
>   8.237  3   0.172E-01
>   8.337  3   0.623E-01
>   8.437  3   0.240E-01
>   8.537  3  -0.774E-02
>   8.637  3   0.584E-01
>   8.737  3   0.118E+00
>   8.837  3   0.287E-01
>   8.937  3   0.760E-02
>   9.037  3   0.152E+00
>   9.137  3   0.242E+00
>   9.237  3   0.791E-01
>   9.337  3   0.621E-01
>   9.437  3   0.944E-01
>   9.537  3   0.641E-01
>   9.637  3   0.103E+00
>   9.737  3   0.807E-01
>   9.837  3   0.622E-01
>   9.937  3   0.163E+00
>  10.037  3   0.106E+00
>  10.137  3   0.117E-01
>  10.237  3   0.449E-01
>  10.337  3   0.445E-01
>  10.437  3   0.289E-01
>  10.537  3   0.438E-01
>  10.637  3   0.189E-01
>  10.737  3   0.759E-03
>  10.837  3   0.225E-02
>  10.937  3   0.135E-02
>  11.037  3   0.159E-02
>  11.137  3   0.125E-02
>  11.237  3   0.730E-04
> 
> Thank you in advance for the anticipated comments.
> 
> 
> Jolayemi Omamuyovwi RitaUniversity of BeninNigeria
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