zmap a tool for analyses of seismicity patterns typical applications ...

#define VARIANCE_30 30
change to:
#define VARIANCE_30 90
and re-compile (cc -o msiWindow_1 msiWindow_1.c)
The cumulative misfit method
Stress tensor inversions are time consuming, and the resulting tensor is not easily
visualized. To identify crustal volumes that satisfy one homogeneous stress tensor Lu and
Wyss (1995) and Wyss and Lu (1995) introduced the cumulative misfit method. The
misfit, f, for each individual earthquake can be summed up in a number of different ways,
for example along the strike of a fault or plate boundary. If the stress direction along
strike is uniforms within segments, but different from other segments, the cumulative
misfit will show constant, but different slope for each segment (Figure 84). We can
also study the cumulative misfit as a function of latitude, depth, time, or magnitude, and
try to identify segments with constant but different slope.
ZMAP allows taking the cumulative misfit method one step further: A grid (in map view
or cross-section) is used, and the average misfit of the n closest earthquakes in
an Euclidean sense is calculated. The distribution of this average misfit can be displayed
using a color representation. Maps of this type, calculated for a number of different
assumed homogeneous stress tensor can identify homogeneous volumes, which then can
be inverted using the stress tensor inversion method described earlier.
Figure 5.9. Schematic explanation of the cumulative misfit method. Changes in the slop of the cumulative
misfit curve (blue) indicate a change in the stress regime. Figure courtesy of Zhong Lu
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