A program to plot a stream

• Plots live data from a socket as it is generated
• Can plot points, lines, or impulses
• Potentially useful for analyzing log files on the fly or monitoring an application

Command line options

Allowed options:

--help                  produce help message
--width arg (=800)      screen width
--height arg (=600)     screen height
--host arg (=localhost) host to listen for streams on
--port arg (=10000)     port to listen for streams on
--mode arg (=points)    pick points or lines or impulses

Streams

• You can make StreamPlot plot data by connecting to the specified port (10000 by default) and sending in x-y tuples
• The plot will scale automatically based on the input ranges

Example

• This example should run on linux, some Makefile adjustments may be needed to work on Mac or Windows

Terminal 1:

make
./streamplot --mode=impulses

Terminal 2:

cur=1; while [ "$cur" -lt "100" ]; do echo "$cur $cur"; cur=`expr $cur + 1`; sleep 1; done | telnet localhost 10000

After starting the while loop in the second terminal, watch as the plot is updated dynamically

TODO

• 3D plotting?
• multiple plots from the same stream? (ie. in [x, y1, y2, y3, ...] format)
• labels?
• better/more colours?
• support a maximum number of samples (possibly implemented by a circular buffer)
• vertex arrays or vertex buffers if performance becomes a problem
• let me know what you need!

License

Public domain. Credit is appreciated and I would like to hear about how you use it.