plot data at variable points using gnuplot

Question

Here is my data file

 seconds        data
 (x-axis       ( y axis
  points)      points)
3.880000,       20
3.920000,       10
3.960000,       20
4.000000,       20
4.080000,       20
4.120000,       20
4.570000,       20
4.620000,       10
4.650000,       10
4.690000,       10
4.750000,       20
 .
 .
 .
and so on

I want to plot points in column 2 at positions specified by column 1

ie I want 20 , 10 , 20 20, 20 etc to be present at 3.88 , 3.92, 3.96 on xaxis

Can anybody tell me how to do this ?

Nylon Smile · Accepted Answer · 2011-01-07 01:49:52Z

4

Suppose your data is in 1.txt:

plot "1.txt" using 1:2

answered Jan 7, 2011 at 1:49

Nylon Smile

9,5661 gold badge27 silver badges35 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

mgilson · Accepted Answer · 2012-03-14 13:36:25Z

I know it's been a long time, but for anyone else who stumbles upon this... For this datafile, you'll also need a set datafile separator ','

e.g.

set datafile separator ','
plot 'data.dat' using 1:2

As a matter of style, it is probably best practice to explicitly comment out the header of the datafile using '#' characters. e.g.

# seconds        data
# (x-axis       ( y axis
#  points)        points)
3.880000,       20
3.920000,       10
3.960000,       20
4.000000,       20
4.080000,       20
4.120000,       20
4.570000,       20
4.620000,       10
4.650000,       10
4.690000,       10
4.750000,       20

For this simple example, it works without the comments, but other, more complicated datafiles may not.

Collectives™ on Stack Overflow

plot data at variable points using gnuplot

2 Answers 2

Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related