INTERACTIVE BLOCK CHOICE

interactive block choice

This function will make you a god of seismogram interpretation.

A portion of the CWT is picked using the left button of a mouse forming a closed polygon on the CWT plane.  First press the green button to start picking.   Choose your polygon and then double click to finish the polygon.

If you want to only include the CWT information within the polygon, press the orange button.  The inverse CWT will be computed only for the coefficients within the polygon.

If you want to exclude this information, press the yellow button.  The inverse CWT will be computed for all coefficients outside of the polygon.

Note that large polygons slow down the inclusion or exclusion process.

Here is an example using the canonical seismogram.  The seismogram has been soft thresholded for noise:

soft thresholded data



Next a polygon is placed around the energy composing the fundamental Rayleigh wave.  Click with the cursor to define the polygon and double click on the last point.

polygon pick



Pushing the Include Block button gives this image:

include polygon result

Now the resulting seismogram, polygon, and CWT can be saved to files using the File menu.


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