Attempt to decrease timestamp jitter by recording the timestamp before the data are plotted. Not sure this helps.

Author: raacampbell

completed/private/plotImageData.m

@@ -26,7 +26,8 @@ function plotImageData(imData,h,saveFname,scanPattern)
 	%The number of points on one line (larger then imSize if fillFraction < 1)
 	pointsPerLine = ceil(size(imData,1) / imSize); 
 
-
+	timeStamp = now*60^2*24*1E3; %MATLAB serial date in ms. This is used for saving. 
+	
 	for chan = 1:size(imData,2)
 
 		im = reshape(imData(:,chan), pointsPerLine, imSize);
@@ -84,7 +85,6 @@ function plotImageData(imData,h,saveFname,scanPattern)
 				thisFname = saveFname;
 			end
 			im = im * 2^16/2 ; %ensure values span 16 bit range (TODO: hard-coded, above)
-			timeStamp = now*60^2*24*1E3; %MATLAB serial date in ms
 
 			imwrite(uint16(im), thisFname, 'tiff', ...
 						'Compression', 'None', ...