Fix wrong arguments in join function

Support for scalar disparity

join.m

@@ -39,9 +39,9 @@ LFEnd = LFPos+LFSize;
 LFEndX = LFEnd(3); LFEndY = LFEnd(4);
 
 % Initialize lightfield
-[LFVal,LFDisp,LFLab] = deal(nan(LFSize));
+LFVal = nan(LFSize);
 LFBuf = zeros(LFSize);
-LFSet = SR.FieldsToSet(LFVal,LFPos,LFLab,LFDisp,LFDisp);
+LFSet = SR.FieldsToSet(LFVal,LFBuf,LFPos,LFVal,LFVal);
 
 dispsx = cellfun(@(x)median(x(:)),DisparityX);
 dispsy = cellfun(@(x)median(x(:)),DisparityY);
@@ -62,10 +62,18 @@ for lab = sortedLab
     SRVal   = Value{lab};
     SRPos   = Position{lab};
     SRLab   = Label{lab};
-    SRDispX = DisparityX{lab};
-    SRDispY = DisparityY{lab};
     SRSize  = size(SRVal);
     
+    % Mask corresponding to (super-ray) pixels to be mapped
+    if Copy
+        SRMask = true(SRSize);
+    else
+        SRMask = SRLab==lab;
+    end
+    
+    SRDispX = double(SRMask).*DisparityX{lab};
+    SRDispY = double(SRMask).*DisparityY{lab};    
+    
     %SRPosU = SRPos(1); SRPosV = SRPos(2);
     SRPosX = SRPos(3); SRPosY = SRPos(4);
     
@@ -75,13 +83,6 @@ for lab = sortedLab
     xgv = reshape(1:SRSize(3),1,1,[]);
     ygv = reshape(1:SRSize(4),1,1,1,[]);
     
-    % Mask corresponding to (super-ray) pixels to be mapped
-    if Copy
-        SRMask = true(SRSize);
-    else
-        SRMask = SRLab==lab;
-    end
-    
     % Super-ray coordinates in super-ray reference frame
     [SRU,SRV,SRX,SRY] = ndgrid(ugv,vgv,xgv,ygv);