Re: [Gnuplot-info] errorbars

[Praedor A. <pr...@ya...>]

On Thursday 20 September 2007 04:20:57 blooopsi wrote:
> Thanks a lot for all your help. I finally read the gnuplot help (which i
> probably should do more often :-)) and solves the problem. for everyone w=
ho
> is interested.it is:
> plot 'data.dat' using 1:2:($2+$3):($2-$4) with yerrorbars.
> in all the other gnuplot help sites this isn't necessary. so, i dont know
> how they produce their errorbars.

It doesn't seem that it should be necessary to go all out with the extra co=
de =20
since it automatically "knows" that a   3rd column is +/- y error bars if a=
 =20
3rd column exists and you use the switch "with yerrorbars", it should be=20
assumed that if there are four columns and you use "with yerrorbars", that=
=20
should be enough to tell it "columns 3 and 4 are y error data with 3 as=20
positive error and 4 as negative error", etc.  Having to use "($2+$3):
($2-$4) " is then redundant to using "with yerrorbars".  What ELSE are the=
=20
3rd and 4th columns going to be under the circumstances?  Same thing if one=
=20
uses the switch "with xerrorbars". =20

praedor

=2D-=20
=E2=80=9CThe whole problem with the world is that fools and fanatics are al=
ways so=20
certain of themselves, but wiser people so full of doubts.=E2=80=9D
 - Bertrand Russell