Plotting data that include NaN

[fab]

Hi there

Does anybody know of a plotting program on linux (I use Debian) that accepts missing values (NaN, NA, undef,...) and ignores them on a plot? I've tried several programs (xmgrace, octave, labplot). Each accepts the NaN's but when plotting the data it either sets the value to +Inf or connects the two bordering points. I'm looking for a program that line-connects only points with no missing values in between and leaves a blank spot on the plot when encountering NaN's (like Grapher or Origin on Windows).

Thank you
fab

[jeremy1701]

Check out http://www.gnu.org/software/plotutils/

Jeremy

[fab]

Check out http://www.gnu.org/software/plotutils/

Jeremy

I guess the Gunplot function is the same as is used in octave and the graph function doesn't work either. But thanks anyway

[jeremy1701]

Create a small awk script that runs through your file and deletes each point value that contains a NaN or Na.

1,2
1,3
2,4
3,na
4,5

would then be

1,2
1,3
2,4
4,5

and your problem would be solved.

Jeremy

[fab]

Yes. Unfortunately I've got block data with multiple columns with missing values at various places and it would be a mess to break it up to make one file for each column