Hello, I have a question related to GCHART procedure. I use it to generate a set of charts, see fragment of code below: -------------- PROC GCHART DATA = (...) BY VARIABLE1 VARIABLE2; -------------- The problem is that for some combinations of VARIABLE1 and VARIABLE2 there are no data available (which I am aware of), but it results in the following error(s): ------------- ERROR: There are no valid observations. Could be caused by SUMVAR= or FREQ= variable. NOTE: The above message was for the following BY group:       VARIABLE1 = X VARIABLE2 = Y (...) NOTE: The SAS System stopped processing this step because of errors. ------------- In such cases I'd like to display "No data" text instead of a graph or draw an empty graph (but without throwing these errors). Could you kindly please give me some suggestions how I should handle that problem properly? Thank you in advance, Voytek ... View more