gnuplot-py-users

[Gnuplot-py-users] Error bars?

[Tom K. <to...@ko...>]

Hello:

I have two plotting needs:

1. Does anyone know if there is a way to make error bars in this 
gnuplot module?
2. Is it possible to make two scales for the x and y axes? Like celsius 
on one side and fahrenheit on the other?

Thanks very much.

best,
Tom


http://kornack.com
Fundamental Symmetries Lab, Princeton University
609-716-7259 (h), 609-933-2186 (m), 609-258-0702 (w), 609-258-1625 (f)
Thomas Kornack, 157 North Post Road, Princeton Junction, NJ 08550-5009

Re: [Gnuplot-py-users] Error bars?

[Robert L. <ro...@le...>]

Tom Kornack wrote:
> I have two plotting needs:
> 
> 1. Does anyone know if there is a way to make error bars in this gnuplot 
> module?

Add 'errorbars' to the 'with' keyword, e.g.:

gnuplot.plot(Gnuplot.Data(theData, with="errorbars"))

The data must include the necessary information to plot the errorbars, see the 
gnuplot help on errorbars for more info.

> 2. Is it possible to make two scales for the x and y axes? Like celsius 
> on one side and fahrenheit on the other?

I haven't done it myself but I think you can use the set x2/y2...(range, label, 
tics, etc) to do this, i.e. gnuplot('set x2range [-10:10]')


HTH

Robert

Re: [Gnuplot-py-users] Error bars?

[Fernando P. <Fer...@co...>]

Tom Kornack wrote:
> Hello:
> 
> I have two plotting needs:
> 
> 1. Does anyone know if there is a way to make error bars in this 
> gnuplot module?

Sure, just call gp('set data style errorbars') (assuming gp is your gnuplot 
instance) and then plot your data as an Nx3 array, where the first column is 
X, the 2nd is Y and the third is dY.

Hth,

f