make itaAnthroHrtf work when input HRTF has only two channels at poles

problem occured when input HRTF had only 2 channels at poles, not 2 channels for each phi angle, as resulting from arc measurements

applications/Binaural-HRTF/HRTF_class/test_rbo_Ellipse2mSphere.m

@@ -153,6 +153,15 @@ try
     ellipsoidCoord(2:2:end) = rSphere_R(idxCoord);
 end
 
+
+if an.channelCoordinates.nPoints ~= numel(ellipsoidCoord)
+    % Problem when HRTF has only 2 Channels at poles and not nPhi channels
+    % in the  'same' location - 17.04.18 - hbr
+    idx = coord.findnearest(an.dirCoord);
+    chIdx = [2*idx-1, 2*idx].';
+    ellipsoidCoord = ellipsoidCoord(chIdx(:));
+end
+
 % coord.surf(coord.r, ellipsoidRi)
 % an.dirCoord.surf(an.dirCoord.r,ellipsoidCoord(1:2:end))     
 end
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