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Sprak: Graph Visualization From The Command Line

by reiver

So you are at the command line. You have a bunch of data you pulled from the database or a file. You did a bunch of "magic" to awk, sort and other command line tools to extract the "important" parts of the data.

Now you want to see that "important" extract in a graph.

What's the fastest way to visualize it? What's the fastest to see a graph?

MS Excel? OpenOffice Calc? GNU Octave? R?

No, no, no and no.

The fastest way is using spark.

Spark lets you create and view graphs right from the command line.

Here is a very basic example:

spark 0 30 55 80 33 150
Figure 1. Very basic usage of spak.

Figure 2. Output of spark command in figure 1.

And here is a more typical example:

curl --silent | sed '1d' | cut -d, -f9 | spark
Figure 3. More typical usage of spak. Magnitude of earthquakes over 1.0 in the last 24 hours.

Figure 4. Output of spark command in figure 3.

(More spark examples here.)

Check out spark.

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