Explorations: Graphic Displays of Data

3-D GRAPHS

### Topological Presentation of Data

For an interesting, and potentially informative display of the data for a day, The Z-squared values for each 15-minute block for each egg are used in a 96 x N-eggs array that forms the basis for a topological "map" of the REG activity for one full day (10 July 1999).

The same data, in a "flat" perspective that allows visualization of concentrations of activity in "ridges" corresponding to time periods or egg clusters. Note the dearth of activity around noontime, UTC.

### Time Series, 24 hours

Continuing the explorations, George sent the following on 21 July 1999. His accompanying description:

Roger,

The attached .gif is an attempt to create a strictly time based graph with fixed degrees of freedom.
This is the idea I had poorly expressed in a previous post.

What you're looking at:

86,400 data points, one for each second of the day. The tiny .gif loses much of the graph's
original resolution.

Each data point is the result of the following manipulation:
1) sum egg values for the given second
2) calc'd z^2 for #1
3) summed 3,600 sequential z^2s
4) subtracted 3,600 df from #3

The value is plotted. The process is repeated after advancing one second into the day.

The bottom line is that each point is the composite deviation of the previous hour.

My hope is that large scale patterns (in Gaia's electroencephalogram) may be discerned.
Using 3,600 seconds per point has a smoothing effect on the series. I tried shorter intervals
but the series was quite ragged. Is it valid to process the data this way?
Do you think this technique has any merit?

And yes, this is the infamous Yugo bombing period. You'll have to let me know when I've
over-fished the "Yugo pond" :-)

George

Looks good to me, even without looking.

(July, 1999, RDN, Graphics by George deBeaumont).