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+function outsize = FA_SZ_COLUMN_DIAG(insize)
+ // function outsize = FA_SZ_1(insize)
+ // -----------------------------------------------------------------
+ // Returns the first element of the size array.
+ //
+ // Input data:
+ // insize: size of input argument. It is an array of 2 strings.
+ // The first string specifies the number of rows.
+ // The second string specifies the number of columns.
+ //
+ // Output data:
+ // outsize: first element of the insize array.
+ //
+ // Status:
+ // 08-Dec-2007 -- Raffaele Nutricato: Author.
+ // 08-Dec-2007 -- Alberto Morea: Test Ok.
+ // -----------------------------------------------------------------
+
+ if(insize(2)=='1') then
+ outsize = insize(1);
+
+ elseif(insize(1) == insize(2))
+ outsize = '1';
+ else
+ outsize = insize(2);
+
+ end
+endfunction