Visit Our UNIX and Linux User Community


gnuplot limitations

 
Thread Tools Search this Thread
Special Forums UNIX and Linux Applications gnuplot limitations
# 1  
Old 09-03-2009
gnuplot limitations

I'm running a simulation (programmed in C) which makes calls to gnuplot periodically to plot data I have stored.

First I open a pipe to gnuplot and set it to multiplot:

FILE * pipe = popen("gnuplot", "w");
fprintf(pipe, "set multiplot\n");
fflush(pipe);

(this pipe stays open until the end of the program when I open it)

Next I use fopen to open a file called "plot". Write all the commands I want to have plotted (there's quite a few of them as many of them are just plotting 1 point with a specific color and point style). Once I've written all the commands to plot I close "plot"

Then I use the pipe again to load my file

fprintf(pipe, "load \"plot\"\n");

I'm running it like this so I can constantly plot on the same window and see my plots in real time as the program runs.

Functionally it works but a delay starts to build up and eventually becomes extremely significant.

My load commands are generally on the order of 2000 lines.

So to actually get to a question, does gnuplot have strange behavior for very large loads or can plot take a long time with that. My guess is that my program is piping loads to gnuplot before previous commands are finished completing. Has anyone had experience with this kind of situation, or can anyone suggest a better method for real time plotting in C.

Previous Thread | Next Thread
Test Your Knowledge in Computers #138
Difficulty: Easy
The Unix philosophy is a computer operating system idea that means the operating system provides a set of basic tools that perform a limited, well-defined function, a unified filesystem as the main method of communication, and a shell scripting and command language to combine modular tools to perform more complex workflows.
True or False?

10 More Discussions You Might Find Interesting

1. Solaris

Solaris limitations

Hi, I recently started working with Solaris, and what I noticed is that a lot of commands I used to regularly use don't work, like sed -i and grep -r. I have found work arounds for these problems though but it's a pain in the ass. I'm just wondering why they decided not to include these handy... (4 Replies)
Discussion started by: Subbeh
4 Replies

2. Red Hat

Eth0 Limitations

Hi, I have noticed some performance issues on my RHEL5 server but the memory and CPU utilization on the box is fine. I have a 1G full duplexed eth0 card and I am suspicious that this may be causing the problem. My eth0 settings are as follows: Settings for eth0: Supported ports: ... (12 Replies)
Discussion started by: Duffs22
12 Replies

3. Shell Programming and Scripting

perl limitations vs. bash?

I've building a bunch of bash scripts, and am thinking about "converting" to perl, and have a couple questions first: 1. Is there anything bash will do that perl won't? 2. How steep is the learning curve? 3. If perl's more powerful, why? 4. I've built a small app in python, which seemed nice,... (18 Replies)
Discussion started by: unclecameron
18 Replies

4. Red Hat

Limitations on the partition of linux

Hi, I need a documentation about limitations on the linux partition. On how many primary and extended I could create. And also on different type of storage, how many big capacity I can create. Thanks. (3 Replies)
Discussion started by: itik
3 Replies

5. Solaris

Solaris 9 or 10 LUN Limitations

Is there a limit to the number of LUNS that can be concatenated using Solaris Volume manager with Soft partitions? I have worked with some AIX admins in the past and there was such a limitation therefore limiting the size the filesystem could grow to. Is there such a limitation in Solaris 9... (6 Replies)
Discussion started by: BG_JrAdmin
6 Replies

6. UNIX for Dummies Questions & Answers

Password limitations.

I would like to set my minimum password length to on Linux and AIX. However, doing this normally would only make it so newly added users will be affected by this. I would like for when I make this change, it either truncates everyone elses password, or prompts them to change it to 8+ characters.... (2 Replies)
Discussion started by: syndex
2 Replies

7. UNIX for Dummies Questions & Answers

csplit limitations

I am trying to use the csplit file on a file that contains records that have more than 2048 characters on a line. The resultant split file seems to ignore the rest of the line and I lose the data. Is there any way that csplit can handle record lengths greater than 2048? Thanks (0 Replies)
Discussion started by: ravagga
0 Replies

8. UNIX for Dummies Questions & Answers

Unix Sort - Limitations

Hi All, I want to sort a flat file which will contain millions of records based on a key/field. For this I want to use unix sort command and before that I want to make sure that unix sort command has any file size limitations. And also please let me know whether I have to change any... (2 Replies)
Discussion started by: chprvkmr
2 Replies

9. IP Networking

need help with 32 bit IP address limitations

32 bit IP addresses with class based allocation schemes have limitations. does anyone know where i could get some info on this or if you have time to spare and really want to help me, a couple of sentences. thanks milos (1 Reply)
Discussion started by: 30177005
1 Replies

10. UNIX for Dummies Questions & Answers

mkdir limitations

What characters can't be used with a mkdir? Any limits on length of name? Thank you, Randy M. Zeitman http://www.StoneRoseDesign.com (12 Replies)
Discussion started by: flignar
12 Replies
GPIV_VORTY(1)						      General Commands Manual						     GPIV_VORTY(1)

NAME
gpiv_vorty - Calculates the differential quantities vorticity, shear strain and normal strain from PIV data. SYNOPSIS
gpiv_vorty [-d N] [-h | --help] [-p | --print] [-g | --g] [--no_g ] [-v | --version] [filename] < stdin > stdout DESCRIPTION
gpiv_vorty calculates the differential quantities like vorticity, shear strain and normal strain from PIV data. You can choose from several differential schemes: central differentiation, least squares, Richardson extrapolation and circulation method. Circulation method only allows one to calculate vorticity, but no strain. The output can be generated as ASCII data containing four columns or as GNUPlot Data for- mat that allows one to view/print the data as contour plots. The configuration parameters (containing the POST key) may be overruled by the command line options, as explained below. Options -d N Differential type to be used: central difference (N=0), least squares (N=1), Richardson interpolation (N=2), circulation method (N=3) -h | --help On-line help -p | --print Print parameters, command line options and eventually used input and output filenames to stdout. The output is identic of file- name.par, in case filename is used. -g Show contour plot of the output with gnuplot. --no_g Suppresses to show contour plot of the output with gnuplot. -v | --version Print version information on standard output, then exit successfully. filename Input PIV data file. Overrides stdin and stdout. The output will be written to filename.vor. Parameters are stored in filename.par and may be used for future use by including them in ./gpivrc. SEE ALSO
gpivtools AUTHOR
Gerber Van der Graaf 8 November 2006 GPIV_VORTY(1)

Featured Tech Videos