[Sujatha]

Hi all,
I am trying to get plot of pressure along a line from sampledict output directly in gnuplot. But when I type the "sample" keyword after running the problem, I get a set folder in the postprocessing folder. These contains files with ".gplt" extension. I tried to call these to the gnuplot using "plot" command in the terminal as per usersguide, I got a message saying the file cannot be read and no graph is created.
I have seen similar issues in other threads but no answers that helps me.

Any hint will be a privilege and is greatly appreciated.

Thanks in advance.
regards,
Sujatha

[Lieven]

Hi Sujatha,

You can use the files directly as input for gnuplot:

$ gnuplot the_file_name.gplt

which will directly create an image file

Cheers,

L

[Sujatha]

Thank You sir, Lieven for your kind response.

I tried the command and I am getting the message as
gnuplot the_run/pressgnu2/sampobs/postProcessing/sets/0.1_lineX1_p.gplt
Cannot open load file 'the_run/pressgnu2/sampobs/postProcessin/sets/0.1_lineX1_p.gplt'
line 0: util.c: No such file or directory

I have tried the command for different cases and couldn't get the plot.
I will be grateful if you could suggest me some possible solution.

Thanks again.
Regards
Sujatha

[Lieven]

Are you sure you entered the fileName correctly? Cause in your error message you say "postProcessin" instead of "postProcessing"

Cheers,

L

[Sujatha]

Thank You Sir, Lieven,for the response. It's 'postProcessing', I have left the 'g' while I was copy -pasting it.
I have tried for more than one simulation, but couldn't get the plot. Will that be any other sort of error? While entering the file name i guess we need to write the entire path , excuse me if I am wrong.

Thanks again.
Regards,
Sujatha

[Lieven]

Hi Sujatha,

What does

cd the_run/pressgnu2/sampobs/postProcessing/sets/
gnuplot 01_lineX1_p.gplt

give you? Do you get the same error? Which version of gnuplot are you using (gnuplot -h)

Cheers,

L

[Sujatha]

Sir,Lieven,
I'm grateful for your kind response.
Now I get an error message as "the_run undefined" and when I removed it from the code I got the error message as "invalid command".

I'm using Gnuplot 4.4, I could plot functions, etc using this, except for plotting with a data file directly obtained from sampleDict.

Thanking You,
Regards
Sujatha

[Lieven]

Hi Sujatha,

Let me rephrase it to English instead of bash-coding: you should navigate in a terminal to the folder where the 01_...gplt-file is stored. Once in that folder you should open the gplt file with gnuplot.

The 'the_run/...' is simply the path that I copied from your previous post. It's impossible for me to verify if this really is the correct path. But it's probably not since it returns an error.


Cheers,

L

[Sujatha]

Sir, Lieven, Thanks a million. I tried with the path name and then called the file with the command gnuplot as: run/pressgnu2/sampobs/postProcessing/sets/0.1$ gnuplot lineX1_p.gplt .
I got the graph. Thanks again sir.

Regards,
Sujatha