Index: /issm/trunk-jpl/src/m/contrib/morlighem/modeldata/interpPaolo2015.m
===================================================================
--- /issm/trunk-jpl/src/m/contrib/morlighem/modeldata/interpPaolo2015.m	(revision 24515)
+++ /issm/trunk-jpl/src/m/contrib/morlighem/modeldata/interpPaolo2015.m	(revision 24516)
@@ -1,4 +1,6 @@
 function [dh_raw_out dh_fil_out T_out] = interpPaolo2015(X,Y,T,method)
 %INTERPPAOLO2015 - interpolate observed (time series) height change [m]
+%
+%   Time series are average height changes [m] with respect to 1994 every three months (72 time steps)
 %
 %   Inputs
@@ -148,5 +150,9 @@
 	if size(T,2)>1 | size(T,1)<1 | size(T,2)<1,
 		error('Size of input T not supported!');
-	end %}}}
+	end 
+	if size(X,1)>1 & size(X,2)>1
+		error('Size of input X not supported! X and Y should be vectors');
+	end
+	%}}}
 	% Loop over T
 	pos = [];