lineviewer

Overview ¶

This command is the server portion of the pipeline plotter.

Lineview listens on two ports. One is the collector port, to which lineprobe clients connect and send data corresponding to data streams. The second port is a simple http server that allows multiple viewers of the collected data in real-time.

Command Options ¶

Lineviewer runs two servers on different ports. The first is the collector. Lineprobe clients connect directly to the connector port. The second port is the display and shows the image via a simple http server.

By default, lineviewer binds to all interfaces. This permits lineprobe clients from other systems, or for viewers on other systems.

-hostname=0.0.0.0
-viewer_port=8080         Port for web viewer.
-collector_port=3131      Port for data collector.

The server also has an option for addition debug information. And, you can enable collection of profiling information.

-debug
-profile                  Writes to lineviewer.prof.

Plot Options ¶

By default, the lineviewer treats the X-axis as the sequence number of each sample. However, the lineviewer can track the timestamp of when each value is received.

-timestamp                Collect and display samples with a timestamp.
-plot_width=<int>         Width in pixels.
-plot_height=<int>        Height in pixels.
-samples=<int>            Initial number of samples (or, seconds for -timestamp)
                          to use in plots for new clients. Clients can adjust
                          this interactively.

Examples ¶

An example of invoking lineviewer.

lineviewer --timestamp --plot_width 800 --plot_height 600