I’ve just read in the NetCDF’s release notes the following, for the 4.1.3-beta1
version from 2011-04-29:
“Took out --with-hdf5 and related options due to high
cost of maintaining this non-standard way of finding
libraries.”
Now, to the facts:
1. this option forces people with custom HDF5 libraries to manually change
CFLAGS, FCFLAGS and LDFLAGS in compile time.
2. NetCDF 4.1.3 requires HDF5 1.8.6
3. Current linux distros comes with just HDF5 1.8.4
Result: You removed the option to select HDF libraries when it would be most
needed as everyone is needing to install custom HDF5 library on their computer.
This makes people lifes a lot harder, you know? I am planning on shipping
NetCDF and HDF5 as nested packages with a project we are doing due to excessive
compile problems, and we will be forced to add back AC_WITH_ARG for HDF5 in
NetCDF provided package, in order for it to work in accordance with the main
package’s arguments.
And, why did you call the AC_ARG_WITH option a non-standard way to find
libraries? I thought it was a standartizing attempt from GNU autotools to aid
in linking to packages...
- fabricio
From: Erik Noble
Sent: Tuesday, August 02, 2011 10:52 AM
To: Ashish
Cc: netcdfgroup@xxxxxxxxxxxxxxxx
Subject: Re: [netcdfgroup] ASCII to NetCDF
Spazm,
Go here
http://www.ncl.ucar.edu/Applications/list_io.shtml
and here
http://www.ncl.ucar.edu/Applications/read_ascii.shtml
an you should be able to find the function that will work for you. It will
probably be readAsciiTable
You will have to tailor it to work with your file. There are many examples to
follow on that page.
-Erik
On Aug 2, 2011, at 8:57 AM, Ashish wrote:
If you do have access to MATLAB: http://www.mathworks.com/
Create a schema for the file (i.e specify the format you want, the
dimensions, variables and attributes) using ncwriteschema.
You can reuse this schema in case you want to create multiple files:
http://www.mathworks.com/help/techdoc/ref/ncwriteschema.html
Read the data in using textscan.
Look at the 'HeaderLines' to skip over the comments.
http://www.mathworks.com/help/techdoc/ref/textscan.html
Write the data to the netcdf file using ncwrite.
http://www.mathworks.com/help/techdoc/ref/ncwrite.html
Depending on the size of your files and the memory available on your machine,
you could either use textscan/ncwrite to read in and write all the data at one
time,
or loop through line/N lines and use the 'start' option in ncwrite to append
the data in batches.
Ashish
On Sat, 30 Jul 2011 21:14:33 -0400, David William Pierce <dpierce@xxxxxxxx>
wrote:
Do you use an analysis package such as R, IDL, or Matlab? Many such packages
can create netcdf files. It might be easiest to read your files into a
package you are familiar with, then write the netcdf file in the package.
Regards,
--Dave
On Sat, Jul 30, 2011 at 4:34 PM, spazm <kaan@xxxxxxxxxxxx> wrote:
Hello,
I have been googleing to find a solution to convert a couple hundreds of
ASCII files to Netcdf however, the solutions I found don't really fit into
my data set. So, I wanted to ask in here.
My ASCII files come from a GWC (generic water column) data. I paste the
header and first two lines of the data below;
/# -----------------------------------------------------
# Source Files Information
# Index Filename
# 0 I:\raw\234.all
# -----------------------------------------------------
# Field Definitions
# 0 Sample File ID (see above)
# 1 Sample Position X
# 2 Sample Position Y
# 3 Sample Position Z
# 4 Sample Value (Amplitude)
# 5 Sample Time
# 6 Sample Range
# 7 Ship Position X
# 8 Ship Position Y
# 9 Ship Heading (degs)
# 10 Ship Pitch (degs)
# 11 Ship Roll (degs)
# 12 Transducer Depth (m)
# 13 Sound Speed (m/s)
# 14 Ping Number X
# 15 Ping Time X
# 16 Sample Number X
# 17 Beam Number X
# 18 Beam Azimuth X
# 19 Beam Elevation X
#0 1 2 3 4 5 6 7
8 9 10 11 12 13 14 15 16 17 18
19
0 684028.44 4576014.50 -3.76 -127.00 0.0004 0.32 684020.44
4576016.44 238.36 3.25 -0.21 3.28 1504.3 00002 1223471556.46 1
99
0.00 13.98
0 684028.50 4576014.50 -3.86 -127.00 0.0006 0.49 684020.44
4576016.44 238.36 3.25 -0.21 3.28 1504.3 00002 1223471556.46 2
99
0.00 13.98/
Any suggestions to convert this to netcdf? I installed ferret but couldn't
manage to write the suitable code.
Thanks!
--
View this message in context:
http://netcdf-group.1586084.n2.nabble.com/ASCII-to-NetCDF-tp6637076p6637076.html
Sent from the NetCDF Group mailing list archive at Nabble.com.
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