Re: [Gnuplot-info] Piecewise constant plot

[Thomas S. <t.s...@fz...>]

plot "data.txt" using 1:2 with steps


Torquil Macdonald Sørensen wrote:
> 
> Hello, can gnuplot draw a piecewise constant graph from a simple data
> file?
> 
> Here is an example: Let the data file be like the following:
> 
> 0 0
> 1 1
> 2 2
> 
> Then I want a graph that is 0 on x \in [0,1), 1 on [1,2), and so on. Is 
> that possible in gnuplot without modifying the data file?
> 
> I guess it is possible to run a complicated series of command to filter 
> the data file as gnuplot reads it, but I'm would like to be able to do 
> something along the lines of:
> 
> plot "data.txt" using 1:2 blabla
> 
> where "blabla" is some setting that specifies that gnuplot should use a 
> piecewise constant "interpolation" between data points. In fact, one 
> should also be able to specify if any vertical lines should be visible 
> or not.
> 
> Right now I generate a modified data file to accomplish this (containing 
> additional data points):
> 
> 0 0
> 0.99 0
> 1 1
> 1.99 1
> 2 2
> 
> Best regards
> Torquil Sørensen
> Norway
> 
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