custom y scale in plot for

Question

I have a data file, looking like

550 1.436e+00 7.857e-01 5.906e-01 4.994e-01 4.574e-01 4.368e-01 4.260e-01 4.273e-01 4.296e-01 4.406e-01 4.507e-01 4.639e-01 4.821e-01 5.008e-01 5.156e-01 5.378e-01 5.589e-01 5.768e-01 5.970e-01 6.196e-01 6.422e-01 6.642e-01

The first column is for x-axis, the rest ones are for the y-axis, 22 curves totally.

I want to plot the data so that y tics represent cube roots of the values. Actually, I want my cubic curves to become linear, to show, that they're cubic in the normal coordinates (and it is fixed by my task to use these coordinates).

I tried to use the following command:

plot for [i=2:23] datafile using 1:(i ** .333) smooth cspline

It expects column number in place of i. I know, the following is correct:

plot datafile using 1:($2 ** .333) smooth cspline

giving me the desired plot for my first line. But how do I modify this for plot for?

mgilson · Accepted Answer · 2012-11-18 22:11:55Z

3

If you want the column number in place of i, you should use column(i) in the using specification.

plot for [i=2:23] datafile using 1:(column(i) ** .333) smooth cspline

answered Nov 18, 2012 at 22:11

mgilson

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3 Comments

gluk47 Over a year ago

Thank you, I've lost my hope googling!

mgilson Over a year ago

@gluk47 -- No problem. This isn't one you run into very frequently since the shorthand $X is much more common in the documentation, but I'm guessing $i doesn't work here (although I haven't tried it ...)

gluk47 Over a year ago

$i does not work, I tried it first of all. I forgot to mention it in my question.

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