<div dir="ltr"><div><div><div>Hi Wei & Jianfu,<br><br></div>I am curious about the meaning of "=>/". Could you please exploit it a little bit? And what are the differences of "=>/", "=>", "->/", and "->"? Actually, I only use "->" while I read variables from NCL supported files (like .nc, .hdf files). Thank you.<br><br></div>Best,<br></div>Zhifeng<br></div><div class="gmail_extra"><br><div class="gmail_quote">On Tue, Jul 14, 2015 at 3:33 PM, Pan, Jianfu (GSFC-423.0)[COLUMBUS TECHNOLOGIES AND SERVICES INC] <span dir="ltr"><<a href="mailto:jianfu.pan@nasa.gov" target="_blank">jianfu.pan@nasa.gov</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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<div style="direction:ltr;font-family:Tahoma;color:#000000;font-size:10pt">Hi Wei,<br>
<span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black"><br>
Adding "/" to the group name, g = f=>/Global_Projection</span>, didn't seem to help. I'll try the new version of NCL. Thanks!<br>
<br>
Jianfu<br>
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<div style="direction:ltr"><font size="2" face="Tahoma" color="#000000"><b>From:</b> Wei Huang [<a href="mailto:whuang@univ-wea.com" target="_blank">whuang@univ-wea.com</a>]<br>
<b>Sent:</b> Tuesday, July 14, 2015 2:29 PM<div><div class="h5"><br>
<b>To:</b> Pan, Jianfu (GSFC-423.0)[COLUMBUS TECHNOLOGIES AND SERVICES INC]; <a href="mailto:ncl-talk@ucar.edu" target="_blank">ncl-talk@ucar.edu</a><br>
<b>Subject:</b> RE: ncl core dump when accessing hdf5 group<br>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Jianfu,</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">You may try switch from:</span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black">g = f=>Global_Projection </span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black"> </span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black">to</span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black"> </span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black">g = f=>/Global_Projection </span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black"> </span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">to see if it makes a difference.</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Also, NCL has released 6.3.0, you may want to update your NCL,</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">As there are quite few bug fixed regarding read HDF5 files.</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Regards,</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span></p>
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<p class="MsoNormal" style="background:white"><b><span style="font-size:17.0pt;font-family:"Lucida Handwriting";color:#1f497d">Wei Huang</span></b><span style="font-size:9.5pt;font-family:"Lucida Handwriting";color:#222222"></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> Pan, Jianfu (GSFC-423.0)[COLUMBUS TECHNOLOGIES AND SERVICES INC] [mailto:<a href="mailto:jianfu.pan@nasa.gov" target="_blank">jianfu.pan@nasa.gov</a>]
<br>
<b>Sent:</b> Tuesday, July 14, 2015 2:22 PM<br>
<b>To:</b> Wei Huang; <a href="mailto:ncl-talk@ucar.edu" target="_blank">ncl-talk@ucar.edu</a><br>
<b>Subject:</b> RE: ncl core dump when accessing hdf5 group</span></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black">Thanks Wei for your quick response. I was able to dump or print(f). It has too much text to put it here, including metadata in
ISO XML format. The following is part of the printout. Thanks. -Jianfu<br>
<br>
ncl_filedump outputs:<br>
Copyright (C) 1995-2014 - All Rights Reserved<br>
University Corporation for Atmospheric Research<br>
NCAR Command Language Version 6.2.1<br>
The use of this software is governed by a License Agreement.<br>
See <a href="http://www.ncl.ucar.edu/" target="_blank">http://www.ncl.ucar.edu/</a> for more details.<br>
<br>
Variable: f<br>
Type: file<br>
filename: SMAP_L1C_TB_00869_D_20150331T235250_R11340_001<br>
path: /SMAP/SPL1CTB/SMAP_L1C_TB_00869_D_20150331T235250_R11340_001.h5<br>
file global attributes:<br>
dimensions:<br>
DIM_000 = 8286<br>
DIM_001 = 8162<br>
DIM_002 = 16521<br>
variables:<br>
group </Global_Projection><br>
<br>
<br>
float cell_antenna_scan_angle_aft ( DIM_002 )<br>
_FillValue : -9999<br>
coordinates : /Global_Projection/cell_lat /Global_Projection/cell_lon<br>
long_name : Representative scan angle of the SMAP antenna on the spacecraft for all aft looking footprints within the cell.<br>
units : degreesntative scan angle of the SMAP antenna on the spacecraft for all aft looking footprints within the cell.<br>
valid_max : 359.999<br>
valid_min : 0<br>
......<br>
ushort cell_tb_qual_flag_3_aft ( DIM_002 )<br>
_FillValue : 65534<br>
coordinates : /Global_Projection/cell_lat /Global_Projection/cell_lonrature for all forward looking footprints that fall within the grid cell.thin the grid cell.l.the grid cell.vector for forward looking footprints within the cell.<br>
flag_masks : 1s, 2s, 4s, 8s, 16s, 32s, 64s, 128s, 256s, 512s, 1024s, 4096s, 8192s, 16384sd looking footprints that fall within the grid cell.thin the grid cell.l.the grid cell.vector for forward looking footprints within the cell.<br>
flag_meanings : Aft_looking_3rd_Stokes_quality_flag Aft_looking_3rd_Stokes_range_flag Aft_looking_3rd_Stokes_RFI_clean_flag Aft_looking_3rd_Stokes_RFI_repair_flag Aft_looking_3rd_Stokes_NEDT_flag Aft_looking_3rd_Stokes_direct_sun_correction
Aft_looking_3rd_Stokes_reflected_sun_correction Aft_looking_3rd_Stokes_reflected_moon_correction Aft_looking_3rd_Stokes_direct_galaxy_correction Aft_looking_3rd_Stokes_reflected_galaxy_correction Aft_looking_3rd_Stokes_correction_for_atmospheric_conditions
Aft_looking_3rd_Stokes_null_value_bit Aft_looking_3rd_Stokes_parameter_half_orbit_location Aft_looking_3rd_Stokes_RFI_check<br>
long_name : Bit flags that represent the quality of the aft looking third stokes parameters within each grid cell._flag Aft_looking_3rd_Stokes_RFI_repair_flag Aft_looking_3rd_Stokes_NEDT_flag Aft_looking_3rd_Stokes_direct_sun_correction Aft_looking_3rd_Stokes_reflected_sun_correction
Aft_looking_3rd_Stokes_reflected_moon_correction Aft_looking_3rd_Stokes_direct_galaxy_correction Aft_looking_3rd_Stokes_reflected_galaxy_correction Aft_looking_3rd_Stokes_correction_for_atmospheric_conditions Aft_looking_3rd_Stokes_null_value_bit Aft_looking_3rd_Stokes_parameter_half_orbit_location
Aft_looking_3rd_Stokes_RFI_check<br>
...</span></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black"> Wei Huang [<a href="mailto:whuang@univ-wea.com" target="_blank">whuang@univ-wea.com</a>]<br>
<b>Sent:</b> Tuesday, July 14, 2015 2:06 PM<br>
<b>To:</b> Pan, Jianfu (GSFC-423.0)[COLUMBUS TECHNOLOGIES AND SERVICES INC]; <a href="mailto:ncl-talk@ucar.edu" target="_blank">
ncl-talk@ucar.edu</a><br>
<b>Subject:</b> RE: ncl core dump when accessing hdf5 group</span><span style="color:black"></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Jianfu,</span><span style="color:black"></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span><span style="color:black"></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Do a “ncl_filedump your-filename”,</span><span style="color:black"></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Or a “print(f)” after opened the file,</span><span style="color:black"></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Will help you and the people who is willing to help.</span><span style="color:black"></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span><span style="color:black"></span></p>
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<p class="MsoNormal" style="background:white"><b><span style="font-size:17.0pt;font-family:"Lucida Handwriting";color:#1f497d">Wei Huang</span></b><span style="color:black"></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span><span style="color:black"></span></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black">
<a href="mailto:ncl-talk-bounces@ucar.edu" target="_blank">ncl-talk-bounces@ucar.edu</a> [<a href="mailto:ncl-talk-bounces@ucar.edu" target="_blank">mailto:ncl-talk-bounces@ucar.edu</a>]
<b>On Behalf Of </b>Pan, Jianfu (GSFC-423.0)[COLUMBUS TECHNOLOGIES AND SERVICES INC]<br>
<b>Sent:</b> Tuesday, July 14, 2015 2:02 PM<br>
<b>To:</b> <a href="mailto:ncl-talk@ucar.edu" target="_blank">ncl-talk@ucar.edu</a><br>
<b>Subject:</b> [ncl-talk] ncl core dump when accessing hdf5 group</span><span style="color:black"></span></p>
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<p class="MsoNormal"><span style="color:black"> </span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black">When I tried to access an h5 group in ncl, I got a core dump. Does anyone know if there is a limit on the amount of data or number of variables an h5 group
can have? Here is the snippet:<br>
<br>
f = addfile("smap_L1C_file.h5", "r")<br>
g = f=>Global_Projection ; Core dump happens here<br>
<br>
I'm using ncl version 6.2.1. Thank you.<br>
<br>
Jianfu</span><span style="color:black"></span></p>
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