scenePointArray

 Make a point array stimulus for evaluating the optics

     scene = scenePointArray(scene,[sz=128],[pointSpacing=16],[spectralType='d65'])

 The point array scene clarifies the PSF at a variety of locations in the optical
 image.  It also gives a sense of the geometrical distortions.

 SZ defines the row and column size of the image.           (default: 128)
 pointSpacing defines the distance between points in pixels (default: 16)
 The spectrum is D65 by default.  
   Alternative spectral types are 'ee' (equal energy) and 'ep' (equal photons)

Example:
   scene = sceneCreate;
   scene = scenePointArray(scene);
   scene = scenePointArray(scene,64,8,'d65');
   
 Copyright ImagEval Consultants, LLC, 2003.