Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > comp.graphics.apps.gnuplot > #934

How to plot data relative to a specific data point

Show all headers | View raw

I know this is probably a stupid question but I have not been able to
find the answer anywhere.

Suppose I have a data file that looks like:

Time    Value1   Value2   Value3

568744.0    -3.2    5.4    8.8
568744.2     9.1    8.1   -3.5
    .               .        .       .
    .               .        .       .
    .               .        .       .
568423.0    5.7     6.1   7.7

I want to plot the data against time, but want time starting at 0, not
568744.0.

I know I can say
plot "data.txt" u ($1 - 568774.0):2 w lines

but is there a way to tell gnuplot to refer to the first time value
(something like $1(0)).  Does this question make sense?

Back to comp.graphics.apps.gnuplot | Previous | Next — Next in thread | Find similar

Thread

How to plot data relative to a specific data point Tom Gederberg <tgederberg@gmail.com> - 2012-02-10 09:42 -0800
  Re: How to plot data relative to a specific data point Péter Juhász <peter.juhasz83@gmail.com> - 2012-02-10 10:12 -0800

csiph-web