codes

README

go-eccodes

Go wrapper for ecCodes

Examples

https://github.com/llukad/go-eccodes/tree/master/cmd

• go-eccodes
  • Build and install ecCodes C library
    • Build and install ecCodes C library for Linux
      • Install development tools
      • Build and install zlib
      • Build and install libpng
      • Build and install libaec
      • Build end install libjpeg
      • Build end install libopenjpeg2
      • Build end install libjasper
      • Build end install libeccodes
    • Build and install ecCodes C library for Windows (using MSYS2/MINGW64)
      • Install MSYS2
      • Install Mingw-w64 (run MSYS2 MinGW 64-bit shell)
      • Install ecCodes dependencies (run MSYS2 MinGW 64-bit shell)
      • Build and install libaec
      • Build end install libeccodes

Build and install ecCodes C library

Build and install ecCodes C library for Linux

Install development tools

sudo apt-get install gcc make cmake libtool

Build and install zlib

source: zlib

cd ./contrib
tar -xzf zlib-1.2.11.tar.gz
cd zlib-1.2.11
make distclean
./configure --static
make
sudo make install
cd ..
rm -r ./zlib-1.2.11
cd ..

Build and install libpng

source: libpng

cd ./contrib
tar -xzf libpng-1.6.34.tar.gz
cd libpng-1.6.34
./configure --disable-shared
make check
sudo make install
cd ..
rm -r ./libpng-1.6.34
cd ..

Build and install libaec

source: libaec

cd ./contrib
tar -xzf libaec-1.0.2.tar.gz
cd libaec-1.0.2
mkdir build
cd build
../configure --disable-shared
make check
sudo make install
cd ../..
rm -r ./libaec-1.0.2
cd ..

Build end install libjpeg

source: libjpeg

cd ./contrib
tar -xzf jpegsrc.v9b.tar.gz
cd jpeg-9b
./configure --disable-shared
make
make test
sudo make install
cd ..
rm -r ./jpeg-9b
cd ..

Build end install libopenjpeg2

source: libopenjpeg2

cd ./contrib
tar -xzf openjpeg-2.1.2.tar.gz
cd openjpeg-2.1.2
mkdir build
cd build
cmake -DBUILD_SHARED_LIBS:bool=OFF -DBUILD_THIRDPARTY:bool=ON ..
make
sudo make install
cd ../..
rm -r ./openjpeg-2.1.2
cd ..

Build end install libjasper

source: libjasper

cd ./contrib
tar -xzf jasper-version-2.0.14.tar.gz
mkdir build
cd build
cmake -DJAS_ENABLE_SHARED=false ../jasper-version-2.0.14
make clean all
make test
sudo make install
cd ..
rm -r ./build
rm -r ./jasper-version-2.0.14
cd ..

Build end install libeccodes

source: libeccodes

cd ./contrib
tar -xzf eccodes-2.5.0-Source.tar.gz
mkdir build
cd build
cmake -DBUILD_SHARED_LIBS=OFF -DENABLE_NETCDF=OFF -DENABLE_JPG=ON -DENABLE_PNG=ON -DENABLE_AEC=ON \
    -DENABLE_PYTHON=OFF -DENABLE_FORTRAN=OFF -DENABLE_MEMFS=ON ../eccodes-2.5.0-Source
make
ctest
sudo make install
cd ..
rm -r ./build
rm -r ./eccodes-2.5.0-Source
cd ..

Build and install ecCodes C library for Windows (using MSYS2/MINGW64)

Install MSYS2

source: MSYS2

• download installer for x86_64

• install MSYS2 following the guide

• uncomment MSYS=winsymlinks:nativestrict everywhere to enable symbol links

Install Mingw-w64 (run MSYS2 MinGW 64-bit shell)

pacman -S --needed base-devel git mingw-w64-x86_64-toolchain mingw-w64-x86_64-cmake

Install ecCodes dependencies (run MSYS2 MinGW 64-bit shell)

pacman -S mingw-w64-x86_64-zlib
curl -O http://repo.msys2.org/mingw/x86_64/mingw-w64-x86_64-openjpeg2-2.1.2-2-any.pkg.tar.xz
pacman -U mingw-w64-x86_64-openjpeg2-2.1.2-2-any.pkg.tar.xz
pacman -S mingw-w64-x86_64-jasper

Build and install libaec

source: libaec

• extract libaec-1.0.2.tar.gz to MSYS2 user home directory

• replace original files by files from contrib\MSYS2\patches\libaec-1.0.2

• run MSYS2 MinGW 64-bit shell and execute commands to build and install:

tar -xzf libaec-1.0.2.tar.gz
cd libaec-1.0.2
mkdir build
cd build
../configure
make check
make install

Build end install libeccodes

source: libeccodes

• extract eccodes-2.5.0-Source.tar.gz to MSYS2 user home directory

• replace original files by files from contrib\MSYS2\patches\eccodes-2.5.0-Source

• run MSYS2 MinGW 64-bit shell and execute commands to build and install:

mkdir build
cd build
cmake -G "MSYS Makefiles" -DCMAKE_INSTALL_PREFIX=/mingw64 -DDISABLE_OS_CHECK=ON -DENABLE_NETCDF=OFF -DENABLE_JPG=ON -DENABLE_PNG=ON -DENABLE_AEC=ON \
    -DENABLE_PYTHON=OFF -DENABLE_FORTRAN=OFF -DENABLE_MEMFS=OFF ../eccodes-2.5.0-Source
make
make install

• set ECCODES_DEFINITION_PATH environment variable to <your_path>\msys64\mingw64\share\eccodes\definitions

Documentation

Index

• type File
  • func OpenFile(f cio.File) (File, error)
  • func OpenFileByPathWithFilter(path string, filter map[string]interface{}) (File, error)
• type Float64ArrayUnsafe
  • func (a *Float64ArrayUnsafe) Free()
• type Message
• type Reader
• type Writer

Types

type File

type File interface {
	Reader
	Writer
	Close()
}

func OpenFile

func OpenFile(f cio.File) (File, error)

func OpenFileByPathWithFilter

func OpenFileByPathWithFilter(path string, filter map[string]interface{}) (File, error)

type Float64ArrayUnsafe

type Float64ArrayUnsafe struct {
	Data unsafe.Pointer
}

func (*Float64ArrayUnsafe) Free

func (a *Float64ArrayUnsafe) Free()

type Message

type Message interface {
	GetString(key string) (string, error)

	GetLong(key string) (int64, error)
	SetLong(key string, value int64) error

	GetDouble(key string) (float64, error)
	SetDouble(key string, value float64) error

	Data() (latitudes []float64, longitudes []float64, values []float64, err error)
	DataUnsafe() (latitudes *Float64ArrayUnsafe, longitudes *Float64ArrayUnsafe, values *Float64ArrayUnsafe, err error)

	Close() error
	// contains filtered or unexported methods
}

type Reader

type Reader interface {
	Next() (Message, error)
}

type Writer

type Writer interface {
}