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--></style></head><body bgcolor=white lang=EN-GB link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='mso-fareast-language:EN-US'>Hi Barry,<o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'><o:p> </o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'>A couple things, not to be nit-picky but just my experience. I rewrote the script a bit. But I’m confused, your arrays are always empty so Hits_1 will always be 0.<o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'>This version of the script doesn’t give the error:<o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'><o:p> </o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'>begin<o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'> n_days = 3<o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'> dims = 9<o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'> Hits_1 = new(n_days,"float")<o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'> Hits_4km = new(n_days,"float")<o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'> Hits_1 = 0.0<o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'> Hits_4km = 0.0<o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'> do ii_day = 0,dims-1<o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'> if (ii_day .eq.0)then<o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'> i_day = 0<o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'> else<o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'> i_day = (mod(ii_day,3))<o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'> end if<o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'> ;printVarSummary(i_day)<o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'> ;print("i_day = "+ i_day)<o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'> Hits_1(i_day) = Hits_4km(i_day) + Hits_1(i_day)<o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'> print(Hits_1(i_day))<o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'> end do<o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'>end<o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'><o:p> </o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'>/M<o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'><o:p> </o:p></span></p><div><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Times New Roman",serif;color:#0070C0'>~~~~~~~~~~~~~~~~~~~~~~~~~~~~~<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Times New Roman",serif;color:#0070C0'>Marston S. Ward, PhD<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Times New Roman",serif;color:#0070C0'>Department of Earth Sciences<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Times New Roman",serif;color:#0070C0'>University of Gothenburg, Sweden<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Times New Roman",serif;color:#0070C0'>Email: <a href="mailto:marston.johnston@gu.se"><span style='color:#0070C0'>marston.johnston@gu.se</span></a><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Times New Roman",serif;color:#0070C0'>SkypeID: marston.johnston <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Times New Roman",serif;color:#0070C0'>Phone: +46-31-7864901 <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Times New Roman",serif;color:#0070C0'>Only the fruitful thing is true!<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Times New Roman",serif;color:#0070C0'>~~~~~~~~~~~~~~~~~~~~~~~~~~~~~<o:p></o:p></span></p></div><p class=MsoNormal><span style='mso-fareast-language:EN-US'><o:p> </o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'><o:p> </o:p></span></p><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=MsoNormal><b><span style='font-size:12.0pt;color:black'>From: </span></b><span style='font-size:12.0pt;color:black'>ncl-talk <ncl-talk-bounces@ucar.edu> on behalf of Barry Lynn <barry.h.lynn@gmail.com><br><b>Date: </b>Thursday, 19 October 2017 at 16:18<br><b>To: </b>ncl-talk <ncl-talk@ucar.edu><br><b>Subject: </b>[ncl-talk] A NCL Mystery Solved<o:p></o:p></span></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>Hi:<o:p></o:p></p><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>I have this error (it didn't obviously show up with a Google search).<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=gmail-p1><span class=gmail-s1>fatal:Assign: Hits_1 is undefined, can not subscript an undefined variable</span><o:p></o:p></p><p class=gmail-p1><span class=gmail-s1>fatal:["Execute.c":8575]:Execute: Error occurred at or near line 17 in file ./test.ncl</span><o:p></o:p></p><p class=gmail-p1><span class=gmail-s1>Before defining Hits_1 as an array of size n_days, I needed the : to do the sum. </span><o:p></o:p></p><p class=gmail-p1>However, it is the : that causes the error when the variable is defined as an array.<o:p></o:p></p><p class=gmail-p1>I am not sure why, but I thought I would make a note of it for those who encounter the same error message.<o:p></o:p></p><p class=gmail-p1><o:p> </o:p></p><p class=gmail-p1><span class=gmail-s1>begin</span><o:p></o:p></p><p class=gmail-p1><span class=gmail-apple-converted-space> </span><span class=gmail-s2>n_days</span><span class=gmail-apple-converted-space> </span><span class=gmail-s1>= 3</span><o:p></o:p></p><p class=gmail-p1><span class=gmail-apple-converted-space> </span><span class=gmail-s1>dims = 9</span><o:p></o:p></p><p class=gmail-p1><span class=gmail-apple-converted-space> </span><span class=gmail-s1>Hits_1 = new(</span><span class=gmail-s2>n_days</span><span class=gmail-s1>,float)</span><o:p></o:p></p><p class=gmail-p1><span class=gmail-apple-converted-space> </span><span class=gmail-s1>printVarSummary(Hits_1)</span><o:p></o:p></p><p class=gmail-p1><span class=gmail-apple-converted-space> </span><span class=gmail-s1>Hits_4km = new(</span><span class=gmail-s2>n_days</span><span class=gmail-s1>,float)</span><o:p></o:p></p><p class=gmail-p1><span class=gmail-apple-converted-space> </span><span class=gmail-s1>Hits_1 = 0</span><o:p></o:p></p><p class=gmail-p1><span class=gmail-apple-converted-space> </span><span class=gmail-s1>Hits_4km = 0</span><o:p></o:p></p><p class=gmail-p1><span class=gmail-apple-converted-space> </span><span class=gmail-s1>do ii_day = 0,dims,1</span><o:p></o:p></p><p class=gmail-p1><span class=gmail-apple-converted-space> </span><span class=gmail-s1>if (ii_day .eq.0)then</span><o:p></o:p></p><p class=gmail-p1><span class=gmail-apple-converted-space> </span><span class=gmail-s1>i_day = tointeger(0)</span><o:p></o:p></p><p class=gmail-p1><span class=gmail-apple-converted-space> </span><span class=gmail-s1>else</span><o:p></o:p></p><p class=gmail-p1><span class=gmail-apple-converted-space> </span><span class=gmail-s1>i_day = (mod(ii_day,3))</span><o:p></o:p></p><p class=gmail-p1><span class=gmail-apple-converted-space> </span><span class=gmail-s1>end if</span><o:p></o:p></p><p class=gmail-p1><span class=gmail-apple-converted-space> </span><span class=gmail-s1>printVarSummary(i_day)</span><o:p></o:p></p><p class=gmail-p1><span class=gmail-apple-converted-space> </span><span class=gmail-s1>print("i_day = " + i_day)</span><o:p></o:p></p><p class=gmail-p1><span class=gmail-apple-converted-space> <b> </b></span><span class=gmail-s1><b>Hits_1(i_day) := Hits_4km(i_day) + Hits_1(i_day) ; </b></span><span class=gmail-s1><i>remove colon if Hits_1 is defined as an array.</i></span><o:p></o:p></p><p class=gmail-p1><span class=gmail-apple-converted-space> </span><span class=gmail-s1>end do</span><o:p></o:p></p><p class=gmail-p1><span class=gmail-s1>end</span><o:p></o:p></p><p class=gmail-p1><o:p> </o:p></p><div><p class=MsoNormal><o:p> </o:p></p></div><p class=MsoNormal>-- <o:p></o:p></p><div><div><p class=MsoNormal>Barry H. Lynn, Ph.D<o:p></o:p></p><div><div><p class=MsoNormal>Senior Lecturer,<o:p></o:p></p></div><div><div><p class=MsoNormal><span style='color:#888888'>The Institute of the Earth Science, <br>The Hebrew University of Jerusalem, <br>Givat Ram, Jerusalem 91904, Israel </span><o:p></o:p></p></div><p class=MsoNormal><span style='color:#888888'>Tel: 972 547 231 170<br>Fax: (972)-25662581</span><o:p></o:p></p></div></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>C.E.O, Weather It Is, LTD<br>Weather and Climate Focus<br><a href="http://weather-it-is.com" target="_blank">http://weather-it-is.com</a><br>Jerusalem, Israel<br>Local: 02 930 9525<br>Cell: 054 7 231 170<br>Int-IS: x972 2 930 9525<br>US 914 432 3108<o:p></o:p></p></div></div></div></div></div><p class=MsoNormal>_______________________________________________ ncl-talk mailing list ncl-talk@ucar.edu List instructions, subscriber options, unsubscribe: http://mailman.ucar.edu/mailman/listinfo/ncl-talk <o:p></o:p></p></div></body></html>