function [cols]=marker(in)
Description: This is an auxiliary function which returns the column
numbers of markers. This function is helpful to extract
the XYZ columns of specific markers from the large
matrix obtained from "reconfu.m". Note that for every
marker typically five columns are assigned from the matrix
obtained from reconfu.m: X,Y,Z,residuals,Cameras_used
Input: in: marker for which the columns should be returned.
e.g. [1,4] -> output: cols=[1 2 3, 16 17 18] where
X Y Z of the markers are.
Output: cols: column numbers where the XYZ values of the markers
can be found.
Author: Christoph Reinschmidt, HPL, The University of Calgary
Date: March, 1995
Last Changes: November 19, 1996
Version: 1.0