<div dir="ltr"><div>I'm having an issue trying to read some CFS-Reforecast data through OpenDAP in NCL. Most files work, but there are occasional ones that make NCL crash pretty hard (see output below). One such file is <a href="https://nomads.ncdc.noaa.gov/thredds/dodsC/cfsr-hpr-ts45/wnd200_f/2006/200601/catalog.html?dataset=cfsr-hpr-ts45/wnd200_f/2006/200601/wnd200_f.01.2006012406.2006031006.2006012406.grb2">this one</a>.</div><div><br></div><div>Any suggestions on how I can detect a bad file like this before it crashes NCL? Just passing it to addfile causes the crash.</div><div><br></div><div>Thanks!</div><div>Carl</div><div><br></div><div><div><div><font face="monospace, monospace"> Copyright (C) 1995-2017 - All Rights Reserved</font></div><div><font face="monospace, monospace"> University Corporation for Atmospheric Research</font></div><div><font face="monospace, monospace"> NCAR Command Language Version 6.4.1-04May2017_1732</font></div><div><font face="monospace, monospace"> The use of this software is governed by a License Agreement.</font></div><div><font face="monospace, monospace"> See <a href="http://www.ncl.ucar.edu/">http://www.ncl.ucar.edu/</a> for more details.</font></div><div><font face="monospace, monospace"><b>ncl 0> f=addfile("<span style="background-color:rgb(255,255,0)"><a href="https://nomads.ncdc.noaa.gov/thredds/dodsC/cfsr-hpr-ts45/wnd200_f/2006/200601/wnd200_f.01.2006012406.2006031006.2006012406.grb2">https://nomads.ncdc.noaa.gov/thredds/dodsC/cfsr-hpr-ts45/wnd200_f/2006/200601/wnd200_f.01.2006012406.2006031006.2006012406.grb2</a></span>","r")</b></font></div><div><font face="monospace, monospace">Duplicate dataset field names: cfsr-hpr-ts45%2fwnd200_f%2f2006%2f200601%2fwnd200_f%2e01%2e2006012406%2e2006031006%2e2006012406%2egrb2</font></div><div><font face="monospace, monospace">context: Dataset { Float32 U-component_of_wind[time1 = 177][pressure = 1][lat = 181][lon = 360]; Float32 V-component_of_wind[time = 179][pressure = 1][lat = 181][lon = 360]; Int32 time[time = 179]; Int32 time1[time1 = 177]; Float64 lat[lat = 181]; Float64 lon[lon = 360]; String latLonCoordSys; Float64 pressure[pressure = 1]; Float32 V-component_of_wind[time2 = 1][height_above_ground = 1][lat = 190][lon = 384]; Int32 time[time = 179]; Int32 time1[time1 = 177]; Int32 time2[time2 = 1]; Float64 lat[lat = 190]; Float64 gaussw[lat = 190]; Float64 lon[lon = 384]; String latLonCoordSys; Float64 height_above_ground[height_above_ground = 1]; Float64 pressure[pressure = 1];} cfsr-hpr-ts45%2fwnd200_f%2f2006%2f200601%2fwnd200_f%2e01%2e2006012406%2e2006031006%2e2006012406%2egrb2;^</font></div><div><font face="monospace, monospace">*** Error in `ncl': double free or corruption (!prev): 0x000000000d932fb0 ***</font></div><div><font face="monospace, monospace">======= Backtrace: =========</font></div><div><font face="monospace, monospace">/usr/lib64/libc.so.6(+0x7c619)[0x7f7eb746b619]</font></div><div><font face="monospace, monospace">ncl(ocfree+0x1f)[0xe8034e]</font></div><div><font face="monospace, monospace">ncl(ocnodes_free+0x1e0)[0xe86800]</font></div><div><font face="monospace, monospace">ncl[0xec6099]</font></div><div><font face="monospace, monospace">ncl(DAPparse+0x1f5)[0xec632a]</font></div><div><font face="monospace, monospace">ncl(ocfetch+0x2dd)[0xe83db8]</font></div><div><font face="monospace, monospace">ncl(oc_fetch+0x79)[0xe7a600]</font></div><div><font face="monospace, monospace">ncl(dap_fetch+0x17f)[0xebd349]</font></div><div><font face="monospace, monospace">ncl[0xe782b0]</font></div><div><font face="monospace, monospace">ncl(NCD2_open+0x4a5)[0xe73fc1]</font></div><div><font face="monospace, monospace">ncl(NC_open+0x2a0)[0xe3f06c]</font></div><div><font face="monospace, monospace">ncl(nc__open+0x46)[0xe3e521]</font></div><div><font face="monospace, monospace">ncl[0x822ca9]</font></div><div><font face="monospace, monospace">ncl(_NclFileCreate+0x3c7)[0x805302]</font></div><div><font face="monospace, monospace">ncl(_NclOpenFile+0x483)[0x7d0b69]</font></div><div><font face="monospace, monospace">ncl(_NclIAddFile+0x1b7)[0x8cd741]</font></div><div><font face="monospace, monospace">ncl(CallINTRINSIC_FUNC_CALL+0x43)[0x8a2b48]</font></div><div><font face="monospace, monospace">ncl(_NclExecute+0x3eb)[0x8ae005]</font></div><div><font face="monospace, monospace">ncl(yyparse+0x6bd)[0x777de9]</font></div><div><font face="monospace, monospace">ncl(NclDriver+0xc16)[0x774025]</font></div><div><font face="monospace, monospace">ncl(main+0x9)[0x7707b6]</font></div><div><font face="monospace, monospace">/usr/lib64/libc.so.6(__libc_start_main+0xf5)[0x7f7eb7410c05]</font></div><div><font face="monospace, monospace">ncl[0x7706e1]</font></div><div><font face="monospace, monospace">======= Memory map: ========</font></div><div><font face="monospace, monospace">00400000-02846000 r-xp 00000000 00:4a 771250262 /snfs2/home/carl/ncl_ncarg/bin/ncl</font></div><div><font face="monospace, monospace">02a45000-02b12000 r--p 02445000 00:4a 771250262 /snfs2/home/carl/ncl_ncarg/bin/ncl</font></div><div><font face="monospace, monospace">02b12000-02c61000 rw-p 02512000 00:4a 771250262 /snfs2/home/carl/ncl_ncarg/bin/ncl</font></div><div><font face="monospace, monospace">02c61000-06512000 rw-p 00000000 00:00 0</font></div><div><font face="monospace, monospace">08214000-0d956000 rw-p 00000000 00:00 0 [heap]</font></div><div><font face="monospace, monospace">7f7eac000000-7f7eac021000 rw-p 00000000 00:00 0</font></div><div><font face="monospace, monospace">7f7eac021000-7f7eb0000000 ---p 00000000 00:00 0</font></div><div><font face="monospace, monospace">7f7eb37d7000-7f7eb380c000 r--s 00000000 fd:01 1611467726 /var/db/nscd/hosts</font></div><div><font face="monospace, monospace">7f7eb380c000-7f7eb3a0d000 rw-p 00000000 00:00 0</font></div><div><font face="monospace, monospace">7f7eb3a0d000-7f7eb3a6d000 r-xp 00000000 fd:01 1077832509 /usr/lib64/libpcre.so.1.2.0</font></div><div><font face="monospace, monospace">7f7eb3a6d000-7f7eb3c6d000 ---p 00060000 fd:01 1077832509 /usr/lib64/libpcre.so.1.2.0</font></div><div><font face="monospace, monospace">7f7eb3c6d000-7f7eb3c6e000 r--p 00060000 fd:01 1077832509 /usr/lib64/libpcre.so.1.2.0</font></div><div><font face="monospace, monospace">7f7eb3c6e000-7f7eb3c6f000 rw-p 00061000 fd:01 1077832509 /usr/lib64/libpcre.so.1.2.0</font></div><div><font face="monospace, monospace">7f7eb3c6f000-7f7eb3c71000 r-xp 00000000 fd:01 1076477375 /usr/lib64/libfreebl3.so</font></div><div><font face="monospace, monospace">7f7eb3c71000-7f7eb3e70000 ---p 00002000 fd:01 1076477375 /usr/lib64/libfreebl3.so</font></div><div><font face="monospace, monospace">7f7eb3e70000-7f7eb3e71000 r--p 00001000 fd:01 1076477375 /usr/lib64/libfreebl3.so</font></div><div><font face="monospace, monospace">7f7eb3e71000-7f7eb3e72000 rw-p 00002000 fd:01 1076477375 /usr/lib64/libfreebl3.so</font></div><div><font face="monospace, monospace">7f7eb3e72000-7f7eb3e96000 r-xp 00000000 fd:01 1074687352 /usr/lib64/libselinux.so.1</font></div><div><font face="monospace, monospace">7f7eb3e96000-7f7eb4095000 ---p 00024000 fd:01 1074687352 /usr/lib64/libselinux.so.1</font></div><div><font face="monospace, monospace">7f7eb4095000-7f7eb4096000 r--p 00023000 fd:01 1074687352 /usr/lib64/libselinux.so.1</font></div><div><font face="monospace, monospace">7f7eb4096000-7f7eb4097000 rw-p 00024000 fd:01 1074687352 /usr/lib64/libselinux.so.1</font></div><div><font face="monospace, monospace">7f7eb4097000-7f7eb4099000 rw-p 00000000 00:00 0</font></div><div><font face="monospace, monospace">7f7eb4099000-7f7eb409b000 r-xp 00000000 fd:01 1078494182 /usr/lib64/libXau.so.6.0.0</font></div><div><font face="monospace, monospace">7f7eb409b000-7f7eb429b000 ---p 00002000 fd:01 1078494182 /usr/lib64/libXau.so.6.0.0</font></div><div><font face="monospace, monospace">7f7eb429b000-7f7eb429c000 r--p 00002000 fd:01 1078494182 /usr/lib64/libXau.so.6.0.0</font></div><div><font face="monospace, monospace">7f7eb429c000-7f7eb429d000 rw-p 00003000 fd:01 1078494182 /usr/lib64/libXau.so.6.0.0</font></div><div><font face="monospace, monospace">7f7eb429d000-7f7eb42a4000 r-xp 00000000 fd:01 1078457975 /usr/lib64/<a href="http://librt-2.17.so">librt-2.17.so</a></font></div><div><font face="monospace, monospace">7f7eb42a4000-7f7eb44a3000 ---p 00007000 fd:01 1078457975 /usr/lib64/<a href="http://librt-2.17.so">librt-2.17.so</a></font></div><div><font face="monospace, monospace">7f7eb44a3000-7f7eb44a4000 r--p 00006000 fd:01 1078457975 /usr/lib64/<a href="http://librt-2.17.so">librt-2.17.so</a></font></div><div><font face="monospace, monospace">7f7eb44a4000-7f7eb44a5000 rw-p 00007000 fd:01 1078457975 /usr/lib64/<a href="http://librt-2.17.so">librt-2.17.so</a></font></div><div><font face="monospace, monospace">7f7eb44a5000-7f7eb44ad000 r-xp 00000000 fd:01 1075307386 /usr/lib64/<a href="http://libcrypt-2.17.so">libcrypt-2.17.so</a></font></div><div><font face="monospace, monospace">7f7eb44ad000-7f7eb46ac000 ---p 00008000 fd:01 1075307386 /usr/lib64/<a href="http://libcrypt-2.17.so">libcrypt-2.17.so</a></font></div><div><font face="monospace, monospace">7f7eb46ac000-7f7eb46ad000 r--p 00007000 fd:01 1075307386 /usr/lib64/<a href="http://libcrypt-2.17.so">libcrypt-2.17.so</a></font></div><div><font face="monospace, monospace">7f7eb46ad000-7f7eb46ae000 rw-p 00008000 fd:01 1075307386 /usr/lib64/<a href="http://libcrypt-2.17.so">libcrypt-2.17.so</a></font></div><div><font face="monospace, monospace">7f7eb46ae000-7f7eb46dc000 rw-p 00000000 00:00 0</font></div><div><font face="monospace, monospace">7f7eb46dc000-7f7eb46df000 r-xp 00000000 fd:01 1074820322 /usr/lib64/libkeyutils.so.1.5</font></div><div><font face="monospace, monospace">7f7eb46df000-7f7eb48de000 ---p 00003000 fd:01 1074820322 /usr/lib64/libkeyutils.so.1.5</font></div><div><font face="monospace, monospace">7f7eb48de000-7f7eb48df000 r--p 00002000 fd:01 1074820322 /usr/lib64/libkeyutils.so.1.5</font></div><div><font face="monospace, monospace">7f7eb48df000-7f7eb48e0000 rw-p 00003000 fd:01 1074820322 /usr/lib64/libkeyutils.so.1.5</font></div><div><font face="monospace, monospace">7f7eb48e0000-7f7eb48ed000 r-xp 00000000 fd:01 1074821491 /usr/lib64/libkrb5support.so.0.1</font></div><div><font face="monospace, monospace">7f7eb48ed000-7f7eb4aec000 ---p 0000d000 fd:01 1074821491 /usr/lib64/libkrb5support.so.0.1</font></div><div><font face="monospace, monospace">7f7eb4aec000-7f7eb4aed000 r--p 0000c000 fd:01 1074821491 /usr/lib64/libkrb5support.so.0.1</font></div><div><font face="monospace, monospace">7f7eb4aed000-7f7eb4aee000 rw-p 0000d000 fd:01 1074821491 /usr/lib64/libkrb5support.so.0.1</font></div><div><font face="monospace, monospace">7f7eb4aee000-7f7eb4b29000 r-xp 00000000 fd:01 1075015850 /usr/lib64/libquadmath.so.0.0.0</font></div><div><font face="monospace, monospace">7f7eb4b29000-7f7eb4d28000 ---p 0003b000 fd:01 1075015850 /usr/lib64/libquadmath.so.0.0.0</font></div><div><font face="monospace, monospace">7f7eb4d28000-7f7eb4d29000 r--p 0003a000 fd:01 1075015850 /usr/lib64/libquadmath.so.0.0.0</font></div><div><font face="monospace, monospace">7f7eb4d29000-7f7eb4d2a000 rw-p 0003b000 fd:01 1075015850 /usr/lib64/libquadmath.so.0.0.0</font></div><div><font face="monospace, monospace">7f7eb4d2a000-7f7eb4d51000 r-xp 00000000 fd:01 1143288053 /usr/lib64/libxcb.so.1.1.0</font></div><div><font face="monospace, monospace">7f7eb4d51000-7f7eb4f50000 ---p 00027000 fd:01 1143288053 /usr/lib64/libxcb.so.1.1.0</font></div><div><font face="monospace, monospace">7f7eb4f50000-7f7eb4f51000 r--p 00026000 fd:01 1143288053 /usr/lib64/libxcb.so.1.1.0</font></div><div><font face="monospace, monospace">7f7eb4f51000-7f7eb4f52000 rw-p 00027000 fd:01 1143288053 /usr/lib64/libxcb.so.1.1.0</font></div><div><font face="monospace, monospace">7f7eb4f52000-7f7eb4f79000 r-xp 00000000 fd:01 1074687455 /usr/lib64/libexpat.so.1.6.0</font></div><div><font face="monospace, monospace">7f7eb4f79000-7f7eb5179000 ---p 00027000 fd:01 1074687455 /usr/lib64/libexpat.so.1.6.0</font></div><div><font face="monospace, monospace">7f7eb5179000-7f7eb517b000 r--p 00027000 fd:01 1074687455 /usr/lib64/libexpat.so.1.6.0</font></div><div><font face="monospace, monospace">7f7eb517b000-7f7eb517c000 rw-p 00029000 fd:01 1074687455 /usr/lib64/libexpat.so.1.6.0</font></div><div><font face="monospace, monospace">7f7eb517c000-7f7eb521c000 r-xp 00000000 fd:01 1142930368 /usr/lib64/libfreetype.so.6.10.0</font></div><div><font face="monospace, monospace">7f7eb521c000-7f7eb541b000 ---p 000a0000 fd:01 1142930368 /usr/lib64/libfreetype.so.6.10.0</font></div><div><font face="monospace, monospace">7f7eb541b000-7f7eb5421000 r--p 0009f000 fd:01 1142930368 /usr/lib64/libfreetype.so.6.10.0</font></div><div><font face="monospace, monospace">7f7eb5421000-7f7eb5422000 rw-p 000a5000 fd:01 1142930368 /usr/lib64/libfreetype.so.6.10.0</font></div><div><font face="monospace, monospace">7f7eb5422000-7f7eb545c000 r-xp 00000000 fd:01 1097103702 /usr/lib64/libnspr4.so</font></div><div><font face="monospace, monospace">7f7eb545c000-7f7eb565b000 ---p 0003a000 fd:01 1097103702 /usr/lib64/libnspr4.so</font></div><div><font face="monospace, monospace">7f7eb565b000-7f7eb565c000 r--p 00039000 fd:01 1097103702 /usr/lib64/libnspr4.so</font></div><div><font face="monospace, monospace">7f7eb565c000-7f7eb565e000 rw-p 0003a000 fd:01 1097103702 /usr/lib64/libnspr4.so</font></div><div><font face="monospace, monospace">7f7eb565e000-7f7eb5660000 rw-p 00000000 00:00 0</font></div><div><font face="monospace, monospace">7f7eb5660000-7f7eb5664000 r-xp 00000000 fd:01 1097205616 /usr/lib64/libplc4.so</font></div><div><font face="monospace, monospace">7f7eb5664000-7f7eb5863000 ---p 00004000 fd:01 1097205616 /usr/lib64/libplc4.so</font></div><div><font face="monospace, monospace">7f7eb5863000-7f7eb5864000 r--p 00003000 fd:01 1097205616 /usr/lib64/libplc4.so</font></div><div><font face="monospace, monospace">7f7eb5864000-7f7eb5865000 rw-p 00004000 fd:01 1097205616 /usr/lib64/libplc4.soAborted</font></div></div><div><br></div><div><br></div>-- <br><div class="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><br><table border="0" cellpadding="2" cellspacing="2" style="background-color:transparent;max-width:100%;border-collapse:collapse;color:rgb(51,51,51);font-size:14px;border:3px solid rgb(170,170,170);font-family:Times;line-height:12px"><tbody><tr><td align="center" height="71" width="71"><span style="font-size:11px"><span style="font-family:arial,helvetica,sans-serif"><a href="https://ncics.org/" style="color:rgb(17,85,204)" target="_blank"><img src="https://ncics.org/ncics/img/NCICS_logo-131x131.png"></a></span></span></td><td valign="top"><span style="font-size:11px"><span style="font-family:arial,helvetica,sans-serif"><b>Carl J. Schreck III, PhD</b><br></span></span><span style="font-size:11px"><span style="font-family:arial,helvetica,sans-serif"><b>Research Scholar</b></span></span><span style="font-size:11px"><span style="font-family:arial,helvetica,sans-serif"><br></span></span><span style="font-size:11px"><span style="font-family:arial,helvetica,sans-serif"><a href="http://ncsu.edu/" style="color:rgb(38,58,143);font-weight:bold" target="_blank">North Carolina State University</a><br></span></span><a href="https://ncics.org/" style="color:rgb(38,58,143);font-family:arial,helvetica,sans-serif;font-size:11px;font-weight:bold" target="_blank">North Carolina Institute for Climate Studies (NCICS)</a><br style="font-family:arial,helvetica,sans-serif;font-size:11px"><span style="font-size:11px"><span style="font-family:arial,helvetica,sans-serif">151 Patton Ave, Asheville, NC 28801<br>e: </span></span><a href="mailto:cjschrec@ncsu.edu" style="color:rgb(38,58,143);font-family:arial,helvetica,sans-serif;font-size:11px;font-weight:bold" target="_blank">cjschrec@ncsu.edu</a><br style="font-family:arial,helvetica,sans-serif;font-size:11px"><span style="font-size:11px"><span style="font-family:arial,helvetica,sans-serif">o: <a href="tel:(828)%20257-3140" value="+18282573140" style="color:rgb(17,85,204)" target="_blank">+1 828 257 3140</a><br></span></span><span style="font-family:arial,helvetica,sans-serif;font-size:11px">c: <a href="tel:(828)%20484-1702" value="+18284841702" style="color:rgb(17,85,204)" target="_blank">+1 828 484 1702</a><br></span><a href="http://scholar.google.com/citations?hl=en&user=th8ONEcAAAAJ&view_op=list_works&sortby=pubdate" style="color:rgb(38,58,143);font-family:arial,helvetica,sans-serif;font-size:11px;font-weight:bold" target="_blank">Publications</a><br><a href="https://ncics.org/mjo/" style="color:rgb(38,58,143);font-family:arial,helvetica,sans-serif;font-size:11px;font-weight:bold" target="_blank">ncics.org/mjo</a><br><a href="https://www.cyclonecenter.org/" style="color:rgb(38,58,143);font-family:arial,helvetica,sans-serif;font-size:11px;font-weight:bold" target="_blank">CycloneCenter.org</a><br></td></tr></tbody></table></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div>
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