Plotting software

Hi,

Anyone know any good free plotting software?

Im using gnuplot at the moment to plot a load of data on x and y axis with errorbars, and have it make a best fit of the line and give me the values of the slope (y=y0+mlog(x)). However, apart form being a cumbersom piece of software, its also lying to me, what it claims is the equation of the line simply isnt!

So anyone know of anything else/better? (before I resort to a ruler and graph paper!)

btw, this is on topic since I'm trying to plot a tully-fisher relationship for a set of galaxies... I'll write it up in Orbit later in the year.

Cheers,
~Al

Hi,

Anyone know any good free plotting software?

Im using gnuplot at the moment to plot a load of data on x and y axis with errorbars, and have it make a best fit of the line and give me the values of the slope (y=y0+mlog(x)). However, apart form being a cumbersom piece of software, its also lying to me, what it claims is the equation of the line simply isnt!

So anyone know of anything else/better? (before I resort to a ruler and graph paper!)

btw, this is on topic since I'm trying to plot a tully-fisher relationship for a set of galaxies... I'll write it up in Orbit later in the year.

Cheers,
~Al

AT this stahge of the game it would probably be quicker to just graph the data manuall!

I would generally use Excel for this but since you're a sensible Linux user that probably isn't much good to you.

BB