Thank you. <BR><BR><B><I>"JL@gmu" &lt;jli9@GMU.EDU&gt;</I></B> wrote:  <BLOCKQUOTE class=replbq style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #1010ff 2px solid">try this way:  <DIV><BR></DIV>  <DIV>add " dtype netcdf " in the ctl file and open the ctl with gradsnc</DIV>  <DIV><BR>  <DIV>  <DIV>  <DIV>On Sep 10, 2008, at 8:25 PM, aditsuda jamroensan wrote:</DIV><BR class=Apple-interchange-newline>  <BLOCKQUOTE type="cite">  <DIV style="MARGIN: 0px">Dear grads user</DIV>  <DIV style="MIN-HEIGHT: 14px; MARGIN: 0px"><BR></DIV>  <DIV style="MARGIN: 0px"><SPAN class=Apple-converted-space>&nbsp;&nbsp; &nbsp; </SPAN>I'm trying to write a ctl file to read netcdf</DIV>  <DIV style="MARGIN: 0px">file but I got the error "Contouring: nan to nan</DIV>  <DIV style="MARGIN: 0px">interval inf". Anyone have got this error? Here is my</DIV>  <DIV style="MARGIN: 0px">ctl file:</DIV>  <DIV style="MIN-HEIGHT: 14px; MARGIN: 0px"><BR></DIV>  <DIV style="MARGIN: 0px">dset
 /var/tmp/ajamroen/CCTM_e3aCONC.e3a.20020111.nc</DIV>  <DIV style="MARGIN: 0px">undef -99999.0</DIV>  <DIV style="MARGIN: 0px">title<SPAN class=Apple-converted-space>&nbsp; </SPAN>OUTPUT FROM CCTM</DIV>  <DIV style="MARGIN: 0px">xdef 162 linear<SPAN class=Apple-converted-space>&nbsp; &nbsp; </SPAN>-108.7854 <SPAN class=Apple-converted-space>&nbsp; </SPAN>0.14365</DIV>  <DIV style="MARGIN: 0px">ydef<SPAN class=Apple-converted-space>&nbsp; </SPAN>126 linear<SPAN class=Apple-converted-space>&nbsp; &nbsp; </SPAN>-47.5806S<SPAN class=Apple-converted-space>&nbsp; </SPAN>0.12246</DIV>  <DIV style="MARGIN: 0px">zdef <SPAN class=Apple-converted-space>&nbsp; </SPAN>14 levels 1.f, 0.995f, 0.99f, 0.98f, 0.96f,</DIV>  <DIV style="MARGIN: 0px">0.94f, 0.91f, 0.86f, 0.8f, 0.74f, 0.65f, 0.55f, 0.4f,</DIV>  <DIV style="MARGIN: 0px">0.2f, 0.f</DIV>  <DIV style="MARGIN: 0px">tdef<SPAN class=Apple-converted-space>&nbsp; &nbsp; </SPAN>24 linear 00Z11JAN2002 <SPAN
 class=Apple-converted-space>&nbsp; &nbsp; </SPAN>1hr</DIV>  <DIV style="MARGIN: 0px">VARS <SPAN class=Apple-converted-space>&nbsp; </SPAN>92</DIV>  <DIV style="MARGIN: 0px">NO=&gt;no 14 t,z,y,x NO</DIV>  <DIV style="MARGIN: 0px">NO2=&gt;no2 14 t,z,y,x NO2</DIV>  <DIV style="MARGIN: 0px">O=&gt;o 14 t,z,y,x O</DIV>  <DIV style="MARGIN: 0px">O3=&gt;o3 14 t,z,y,x O3&nbsp;</DIV>  <DIV style="MARGIN: 0px">NO3=&gt;no3 14 t,z,y,x NO3</DIV>  <DIV style="MARGIN: 0px">O1D=&gt;o1d 14 t,z,y,x O1D</DIV>  <DIV style="MARGIN: 0px">....</DIV>  <DIV style="MARGIN: 0px">....</DIV>  <DIV style="MARGIN: 0px">endvar</DIV>  <DIV style="MIN-HEIGHT: 14px; MARGIN: 0px"><BR></DIV>  <DIV style="MARGIN: 0px">Thanks,</DIV>  <DIV style="MARGIN: 0px">Ada</DIV></BLOCKQUOTE></DIV><BR>  <DIV><SPAN class=Apple-style-span style="WORD-SPACING: 0px; FONT: 12px Helvetica; TEXT-TRANSFORM: none; COLOR: rgb(0,0,0); TEXT-INDENT: 0px; WHITE-SPACE: normal; LETTER-SPACING: normal; BORDER-COLLAPSE: separate;
 border-spacing: 0px 0px; orphans: 2; widows: 2; -khtml-text-decorations-in-effect: none; -apple-text-size-adjust: auto">  <DIV>Jian Li</DIV>  <DIV><A href="mailto:jli9@gmu.edu">jli9@gmu.edu</A></DIV>  <DIV>C.O.L.A</DIV>  <DIV>4041 Powder Mill Road, Suit 302</DIV>  <DIV>Beltsville, MD 20705</DIV>  <DIV><BR class=khtml-block-placeholder></DIV>  <DIV><BR class=khtml-block-placeholder></DIV><BR class=Apple-interchange-newline></SPAN></DIV><BR></DIV></DIV></BLOCKQUOTE><BR><p>&#32;