Do not print out NAN values

src/@report_series/writeSeriesForGraph.m

@@ -119,7 +119,9 @@ fprintf(fid, '%%series %s\n\\addplot', o.data.name{:});
 writeLineOptions(o, fid, series_num);
 fprintf(fid,'\ntable[row sep=crcr]{\nx y\\\\\n');
 for i=1:ds.dates.ndat
-    fprintf(fid, '%d %f\\\\\n', i, thedata(i));
+    if ~isnan(thedata(i)) 
+      fprintf(fid, '%d %f\\\\\n', i, thedata(i));
+    end
 end
 fprintf(fid,'};\n');