elec_distance

# elec_distance - function [labels, distances] =

This preview shows pages 1–2. Sign up to view the full content.

function [labels, distances] = elec_distance(elec_labels,X,Y,Z,xo,yo,zo) % elec_distance - Calculates spherical interelectrode distances (arc length). % % Usage: [labels, distances] = elec_distance(elec_labels,X,Y,Z,xo,yo,zo) % % Notes: Arc length method assumes a centroid at (xo,yo,zo) = (0,0,0) % and input values are in rectangular Cartesian coordinates. % % Sphere radius is estimated by the average radius from % (xo,yo,zo) to any 2 pairs of electrodes. It will vary % from one pair to another, but this method works well for % small theta (eg, nearest neighbours). % % Returns 2 matrices, one for paired electrode labels and % another for spherical arc length estimates. % % \$Revision: 1.1 \$ \$Date: 2009/04/28 22:13:54 \$ % Author: Darren.Weber_at_radiology.ucsf.edu % Created: 18/05/00 - linear distance % Modified: 24/06/01 - spherical arc length (should be OK for small theta % but for large theta, elliptical arc length may be % preferable). % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % initialise centroid, unless input parameters defined

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

## This note was uploaded on 10/04/2010 for the course ENG 42336 taught by Professor Thomasholland during the Spring '10 term at UC Davis.

### Page1 / 2

elec_distance - function [labels, distances] =

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online