Very Computer

by **A S** » Tue, 07 Nov 2000 04:00:00

Hi,
Need to plot several sets of data on the same axes. The catch is for any
given value of X, the data sets may or may not have Y values.If i just
plot one column against another, gnuplot seems to require data for all Y
columns to be there for each value of X. However, my data is such that
one value of X has all values of Y and sometimes none and sometimes
some...

That is the data looks something like:

X Y1 Y2
-- -- ---
1 2
2 3
3 2 4
4 3 5
5 1 2
6 3
7 4

I appreciate your assistance.

A

by **Hans-Bernhard Broeke** » Wed, 08 Nov 2000 04:00:00

> Hi,
> Need to plot several sets of data on the same axes. The catch is for any
> given value of X, the data sets may or may not have Y values.If i just
> plot one column against another, gnuplot seems to require data for all Y
> columns to be there for each value of X. However, my data is such that
> one value of X has all values of Y and sometimes none and sometimes
> some...

As is, gnuplot can't use your datafile. You cannot use whitespace to
represent missing values in the file. But you can use something else,
provided you 'set missing' to the same string. A good choice is '?', i.e.
you would

set missing '?'

and edit your datafile to look like this:

1 2 ?
2 3 ?
3 2 4
4 3 5
5 1 2
6 ? 3
7 ? 4

--

Even if all the snow were burnt, ashes would remain.

Very Computer

Plotting Multiple Graphs w Different #'s of datapoints

Plotting Multiple Graphs w Different #'s of datapoints

Plotting Multiple Graphs w Different #'s of datapoints