Module sheet

source code

Neural sheet objects and associated functions.

The Sheet class is the base class for EventProcessors that simulate topographically mapped sheets of units (neurons or columns). A Sheet is an EventProcessor that maintains a rectangular array of activity values, and sends the contents of this array as the data element in events.

The Sheet itself is a SheetCoordinateSystem, so that units may be accessed by sheet or matrix coordinates. In general, however, sheets should be thought of as having arbitrary density and sheet coordinates should be used wherever possible, except when the code needs direct access to a specific unit. By adhering to this convention, one should be able to write and debug a simulation at a low density, and then scale it up to run at higher densities (or down for lower densities) simply by changing e.g. Sheet.nominal_density.

$Id: sheet.py 11248 2010-07-18 20:40:37Z ceball $