If we are extracting uvcdat-1.5.1 in Ubuntu 16.04 it may not work properly and throw below error.
ImportError: librtmp.so.0: cannot open shared object file: No such file or directory
By linking the following we can solve the issue
$ locate librtmp.so
/usr/lib/x86_64-linux-gnu/librtmp.so
/usr/lib/x86_64-linux-gnu/librtmp.so.1
$ sudo ln -s /usr/lib/x86_64-linux-gnu/librtmp.so /usr/lib/librtmp.so.0
The WordPress.com stats helper monkeys prepared a 2015 annual report for this blog.
Here’s an excerpt:
The concert hall at the Sydney Opera House holds 2,700 people. This blog was viewed about 12,000 times in 2015. If it were a concert at Sydney Opera House, it would take about 4 sold-out performances for that many people to see it.
Dear All,
Lets see the procedure on how to install ESMF and ESMFPy package using gcc, gfotran, Ubuntu and Python.
You can read more about ESMF https://www.earthsystemcog.org/projects/esmf/
I downloaded esmf_6_3_0rp1_src.tar.gz file from here.
I used Ubuntu 14.04 LTS 64-bit OS to install the ESMF and ESMFPy package.
Login as root, sudo may not work if your target installation path would be /usr/local.
After extracted the above said package then go to that directory.
# root@Ocean:/home/tuxcoder/esmf
Copy paste the following environmental variables in your terminal.
NOTE : you have to change the source directory as per your system path. i.e. ESMF_DIR.
Then you have to provide netcdf4 include path. If you didnt install netcdf4 already then you may read my previous post here.
export ESMF_DIR=/home/tuxcoder/esmf export ESMF_INSTALL_PREFIX=/usr/local/esmf export ESMF_OS=Linux export ESMF_NETCDF="local" export ESMF_COMM=mpiuni export ESMF_F90COMPILER=gfortran export ESMF_CXXCOMPILER=g++ export ESMF_TESTEXHAUSTIVE=on export ESMF_TESTSHAREDOBJ=on export ESMF_NETCDF_INCLUDE=/usr/local/netcdf4/include export ESMF_NETCDF_LIBS="-lnetcdf -lnetcdff" export ESMF_NETCDF_LIBPATH=/usr/local/netcdf4/lib export ESMF_BOPT=O3
After exported all the above environmental variables, then you can do make all followed by make install.
# make all # make install # make installcheck
Now we installed ESMF package in our system.
Lets install ESMFPy in our system python by pointing ESMF package by following steps.
# cd /home/tuxcoder/esmf/src/addon/ESMPy/ # python setup.py build --ESMFMKFILE=/usr/local/esmf/lib/libO3/Linux.gfortran.64.mpiuni.default/<a href="http://esmf.mk">esmf.mk</a> # python setup.py install
Thats it! We successfully installed ESMF and ESMFPy in our gcc, gforatran, Linux based system.
To use ESMFPy, issue the following command.
tuxcoder@Ocean:~$ python Python 2.7.6 (default, Jun 22 2015, 17:58:13) [GCC 4.8.2] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>> import ESMF >>>
Regards,
Arulalan.T
Dear All,
Today I am happy to release version V0.2 aakaara of txt2ipa converter in python.
What is new ? :
In this version V0.2 aakaara txt2ipa converter supports for Kannada Unicode to International Phonetic Alphabet (IPA) along with Tamil Unicode ! 🙂
Read about previous release here
txt2ipa Repo : https://github.com/arulalant/txt2ipa
Todo :
Credits :
Thanks to Mr. Govardhan Balaji who gave me Kannada to ipa map !
Regards,
Arulalan.T
Hai All,
I installed Netcdf4 along with Hdf5 in ubuntu 14.04 LTS 64-bit.
You can follow the below steps to do the same.
szip
Download latest source of zlib from here http://www.zlib.net/ and install it
by
$ ./configure; make; sudo make install
Download szip from http://www.hdfgroup.org/ftp/lib-external/szip/2.1/src/szip-2.1.tar.gz
and extract it.
$ ./configure --prefix=/usr/local/szip $ make; sudo make install
HDF5
We need to find the path of POSIX to enable threads in hdf configuration.
In the configure of hdf5, Â –with-pthread option must point to the directory that contains the POSIX Threads library install ([DIR]/includes/pthread.h, [DIR]/lib/libpthread*)
So lets locate it as shown below.
$ locate pthread.h -> /usr/include/ $ locate libpthread.a -> /usr/lib/x86_64-linux-gnu/ $ locate libpthread.so -> /usr/lib/x86_64-linux-gnu/
Download hdf5 latest source from http://www.hdfgroup.org/HDF5/release/obtainsrc.html
I downloaded http://www.hdfgroup.org/ftp/HDF5/current/src/hdf5-1.8.13.tar.bz2
and extract it and then go inside
$ ./configure --prefix=/usr/local/hdf5 --enable-fortran --enable-cxx --with-szlib=/usr/local/szip --enable-threadsafe --with-pthread=/usr/include/,/usr/lib/x86_64-linux-gnu/ --enable-hl --enable-shared --enable-unsupported
Note 1: In above configuration removed –enable-parallel, since it gives error on “mpi.h” while doing make.
Note 2: More over ROMS forum suggest that parallel netCDF will not improve much scaleup on model speedup. so lets go with single mode as for now.
SUMMARY OF THE HDF5 CONFIGURATION
========================
General Information:
——————-
HDF5 Version: 1.8.13
Configured on: Mon Feb 2 10:55:19 IST 2015
Configured by: tuxcoder@Ocean
Configure mode: production
Host system: x86_64-unknown-linux-gnu
Uname information: Linux Ocean 3.13.0-32-generic #57-Ubuntu SMP Tue Jul 15 03:51:08 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux
Byte sex: little-endian
Libraries: static, shared
Installation point: /usr/local/hdf5
Compiling Options:
——————
Compilation Mode: production
C Compiler: /usr/bin/gcc
CFLAGS:
H5_CFLAGS: -std=c99 -pedantic -Wall -Wextra -Wundef -Wshadow -Wpointer-arith -Wbad-function-cast -Wcast-qual -Wcast-align -Wwrite-strings -Wconversion -Waggregate-return -Wstrict-prototypes -Wmissing-prototypes -Wmissing-declarations -Wredundant-decls -Wnested-externs -Winline -Wfloat-equal -Wmissing-format-attribute -Wmissing-noreturn -Wpacked -Wdisabled-optimization -Wformat=2 -Wunreachable-code -Wendif-labels -Wdeclaration-after-statement -Wold-style-definition -Winvalid-pch -Wvariadic-macros -Winit-self -Wmissing-include-dirs -Wswitch-default -Wswitch-enum -Wunused-macros -Wunsafe-loop-optimizations -Wc++-compat -Wstrict-overflow -Wlogical-op -Wlarger-than=2048 -Wvla -Wsync-nand -Wframe-larger-than=16384 -Wpacked-bitfield-compat -Wstrict-overflow=5 -Wjump-misses-init -Wunsuffixed-float-constants -Wdouble-promotion -Wsuggest-attribute=const -Wtrampolines -Wstack-usage=8192 -Wvector-operation-performance -Wsuggest-attribute=pure -Wsuggest-attribute=noreturn -Wsuggest-attribute=format -O3 -fomit-frame-pointer -finline-functions
AM_CFLAGS:
CPPFLAGS:
H5_CPPFLAGS: -D_POSIX_C_SOURCE=199506L -DNDEBUG -UH5_DEBUG_API
AM_CPPFLAGS: -I/usr/include/ -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_BSD_SOURCE
Shared C Library: yes
Static C Library: yes
Statically Linked Executables: no
LDFLAGS:
H5_LDFLAGS:
AM_LDFLAGS: -L/usr/local/szip/lib -L/usr/lib/x86_64-linux-gnu/
Extra libraries: -lpthread -lz -ldl -lm
Archiver: ar
Ranlib: ranlib
Debugged Packages:
API Tracing: no
Languages:
———-
Fortran: yes
Fortran Compiler: /usr/bin/gfortran
Fortran 2003 Compiler: no
Fortran Flags:
H5 Fortran Flags:
AM Fortran Flags:
Shared Fortran Library: yes
Static Fortran Library: yes
C++: yes
C++ Compiler: /usr/bin/g++
C++ Flags:
H5 C++ Flags:
AM C++ Flags:
Shared C++ Library: yes
Static C++ Library: yes
Features:
———
Parallel HDF5: no
High Level library: yes
Threadsafety: yes
Default API Mapping: v18
With Deprecated Public Symbols: yes
I/O filters (external): deflate(zlib)
I/O filters (internal): shuffle,fletcher32,nbit,scaleoffset
MPE: no
Direct VFD: no
dmalloc: no
Clear file buffers before write: yes
Using memory checker: no
Function Stack Tracing: no
Strict File Format Checks: no
Optimization Instrumentation: no
Large File Support (LFS): yes
$ make
$ sudo make install
NetCdf4
Download latest netcdf from http://www.unidata.ucar.edu/downloads/netcdf/index.jsp
I downloaded netcdf-4.3.2 from here
extract it and go inside it.
$ CPPFLAGS="-I/usr/local/szip/include -I/usr/local/hdf5/include" LDFLAGS="-L/usr/local/szip/lib -L/usr/local/hdf5/lib" ./configure --prefix=/usr/local/netcdf4 --enable-netcdf-4 --enable-shared
$ make
$ make check
================================================
Testsuite summary for netCDF 4.3.2
================================================
# TOTAL: 2
# PASS: 2
# SKIP: 0
# XFAIL: 0
# FAIL: 0
# XPASS: 0
# ERROR: 0
================================================
$ sudo make install
Thats’ it!
Dear All,
Here I am going to explain the very simple steps to install The Weather Research & Forecasting Model (WRF) model in Ubuntu or any Linux Distributions.
$ sudo apt-get install m4 csh netcdf-bin hdf4-tools hdf5-tools zlib* jasper libpng-dev build-essential ncl-ncarg gcc gfortran libnetcdf-dev mpich
$ sudo updatedb
$ locate netcdf.inc
/usr/include/netcdf.inc
Here we got path where netcdf.inc file present and then we need export the path (till before include directory) to NETCDF environment variable in home .bashrc .
In some machines, it may be /usr/local/include/netcdf.inc, in which case export NETCDF directory path upto /usr/local/ .
Add the following lines in your home .bashrc
$ vim ~/.bashrc
# WRF SETTINGS
export NETCDF=/usr
export WRFIO_NCD_LARGE_FILE_SUPPORT=1
Save it !
$ source ~/.bashrc
Download latest WRF model sources from http://www2.mmm.ucar.edu/wrf/users/download/get_sources.html
I downloaded v3.6.1 WRF-ARW and WPS and extracted.
$ cd WRFV3
$ ./configure
Select option relevant to your system linux configuration (like i386 or x64_86), fortran type (like gfortran or ifort or pgfortran) and processors (like parallel or serial).
Select GNU GCC option if you want to use GNU GCC compiler!
and
select model support option (like 1 for basic which I chosed)
$ ./compile em_real
Read the README file of WRFV3 to know more options to compile model.
$ cd ..
$ cd WPS
$ ./configure
Select option relevant to your system linux configuration (like i386 or x64_86), fortran type (like gfortran or ifort or pgfortran) and Grib type (like 1 or 2).
$ ./compile
Read the README files of WPS to compile further with plotting tools (like NCL).
Done !
PS: This compilation progress need atleast 2 GB RAM without swap, or maybe 512 MB RAM + SWAP 2 GB
—
Regards,
Arulalan.T
Project Associate
Centre for Atmospheric Sciences
Indian Institute of Technology Delhi
My Experiments In Gnu/Linux ! : https://tuxcoder.wordpress.com
The WordPress.com stats helper monkeys prepared a 2014 annual report for this blog.
Here’s an excerpt:
The concert hall at the Sydney Opera House holds 2,700 people. This blog was viewed about 19,000 times in 2014. If it were a concert at Sydney Opera House, it would take about 7 sold-out performances for that many people to see it.
This will replace all occurrences of "text1" into "text2" of all text files within all multiple sub level folders in current folder.
$ find ./ -type f | xargs sed -i ‘s/text1/text2/g’
f meant for text files
-i option for replace the strings in the txt files and overwrite it.
‘s/text1/text2/g’ in this option,
s -> string,
text1 -> old string
text2 -> new string
g -> global, this is essential if we need to replace all the occurrences in the same input file.
What is the difference between a hurricane, a cyclone, and a typhoon?
The only difference between a hurricane, a cyclone, and a typhoon is the location where the storm occurs.
The hurricanes, cyclones, and typhoons are all the same weather phenomenon. Scientists just call these storms different things depending on where they occur.
In the Atlantic and northern Pacific, the storms are called "hurricanes," after the Caribbean god of evil, named Hurrican.
In the northwestern Pacific, the same powerful storms are called "typhoons."
In the southeastern Indian Ocean and southwestern Pacific, they are called "severe tropical cyclones."
In the northern Indian Ocean, they’re called "severe cyclonic storms."
In the southwestern Indian Ocean, they’re just "tropical cyclones."
To be classified as a hurricane, typhoon, or cyclone, a storm must reach wind speeds of at least 74 miles per hour (119 kilometers per hour).
In the Atlantic, hurricane season officially runs June 1 to November 30. However, while 97 percent of tropical activity occurs during this time period, there is nothing magical in these dates, and hurricanes have occurred outside of these six months.
Sources :
Dear All,
Problem :
How to plot transparent lines or shaded region in xmgrace ?
For example, look at the below plot.
​
Solution :
I had to plot transparent lines in xmgrace wherever overlaps occurs.
In Grace / xmgrace there is no transparent setting.
https://github.com/pygrace/pygrace/issues/4 suggest 3 ways to achieve this.
I took the 2nd option such as “create three different regions“.
i.e.
1. Regions of Overlap between two data sets a & b
2. Only data set a excluding overlap
3. Only data set b excluding overlap
I written the function “getOverlap”
Source :Â https://gist.github.com/arulalant/b7a1cef170a2e25571f7
Now see the below plot and compare with the above one, you can see different color in the overlap regions.
Result Plot:
Same plot with overlap region with different color (chosen between red and black color)
​
Same getOverlap function useful to plot the shaded overlap region also.
To set custom RGB color in grace look my previous post here
Regards,
Arulalan.T
This is Arulalan.T , currently working as "Project Scientist – C" in National Centre for Medium Range Weather Forecasting (NCMRWF), MoES, Noida, India.
Happy to work in Python & UVCDAT.
My Github Profile
Tux Coder 