NetCDF is a set of software libraries and self-describing, machine-independent data formats that support the creation, access, and sharing of array-oriented scientific data.
Installation
Download netCDF from netCDF.
Here I install netCDF from the source code, but note that Ubuntu has a netCDF package.
If we want to use HDF5, then we have to install HDF5 first, and you can check CSDN．To install the C++ version of the program, you need to install it based on the C version, and the process is the same as installing the c version. The difference between the C version and the C++ version lies in the included header file #include
~/netcdf-4.6.1$ ./configure --prefix=/usr/local/netcdf --disable-dap --disable-netcdf-4
Make check install
Make
Sudo Make install
Usage
NetCDF file content: variable corresponds to real physical data, dimension and attribute corresponds to the specific physical meaning of variable dimension and value. A good reference can be found from netCDF_UCLA.
#include <iostream>
#include <string>
#include <netcdfcpp.h>
using namespace std;
static const int NC_ERR = 2;
int main(void)
{
string dataTemp="something to say";
char* dataOut=(char*)dataTemp.c_str();
int NX=dataTemp.length();
int NY=1;
NcFile dataFile("mysimple_xy.nc", NcFile::Replace);
if (!dataFile.is_valid())
{
cout << "Couldn't open file!\n";
return NC_ERR;
}
NcDim* xDim = dataFile.add_dim("x", NX);
NcDim* yDim = dataFile.add_dim("y", NY);
NcVar *data = dataFile.add_var("data", ncChar, xDim, yDim);
data->put(dataOut, NX, NY);
cout << "*** SUCCESS writing example file simple_xy.nc!" << endl;
return 0;
}
Compile and Run
// CC -o pgm pgm.cpp -I$NETCDF_HOME/include -L$NETCDF_HOME/lib -lnetcdf_c++ -lnetcdf -lm
g++ -o simple_wr simple_xy_wr.cpp -I/usr/local/netcdf/include -L/usr/local/netcdf/lib -lm -lnetcdf
Might prompt: /usr/bin/ld: cannot find -lnetcdf, then you need to build a soft link:
sudo ln -s /usr/local/netcdf/lib/libnetcdf.so /usr/lib/libnetcdf.so