Oh OK. I guess you need to change
int *dim;
dim = new int[2];
to match the type expected by the second style of put(),
long *dim;
dim = new long[2];
...
data->put( &dataOut[0], dim ); // definitely "dim" not "*dim"
// so as to pass the address of the dim
array,
// not the value (6) of its first
element
I expect that put() assumes it knows the length of dim[]:
it's equal to the rank of the netcdf variable.
On Tue, Nov 09, 2010 at 04:41:48PM -0800, salah jubeh wrote:
> I am not very good with pointers some times it confuses me. The dim variable
> is
> a pointer to an array of integer.
>
> int *dim;
> dim = new int[2];
> dim[0] = 6;
> dim[1] = 12;
>
>
> and in this case it points to the address of the first element. Please
> correct
> me if I am wrong.
> data->put(&dataOut[0], *dim);
>
> I find this signature strange because how the put method can determine the
> length of the counts variable. Any way If I change the method as you suggest
> I
> will get compilation error
> simple_xy_wr2.cpp:60: error: call of overloaded ‘put(int*, int*&)’ is
> ambiguous
> /usr/include/netcdfcpp.h:239: note: candidates are: NcBool NcVar::put(const
> int*, long int, long int, long int, long int, long int) <near match>
> /usr/include/netcdfcpp.h:241: note: NcBool NcVar::put(const
> long
> int*, long int, long int, long int, long int, long int) <near match>
> /usr/include/netcdfcpp.h:253: note: NcBool NcVar::put(const
> int*, const long int*) <near match>
> /usr/include/netcdfcpp.h:254: note: NcBool NcVar::put(const
> long
> int*, const long int*) <near match>
>
>
> Regards
>
>
>
> ________________________________
> From: Stuart Levy <slevy@xxxxxxxxxxxxxxxxx>
> To: salah jubeh <s_jubeh@xxxxxxxxx>
> Cc: "netcdfgroup@xxxxxxxxxxxxxxxx" <netcdfgroup@xxxxxxxxxxxxxxxx>
> Sent: Wed, November 10, 2010 12:40:07 AM
> Subject: Re: [netcdfgroup] Fw: NcVar put method
>
> One thing: you mention you intend to use the signature
> NcBool put(const ....* vals, const long* counts)
>
> but when you call
> data->put(&dataOut[0], *dim);
>
> (note the "*dim" which dereferences to a long, rather than long *)
> it'll call a different member function, namely
> NcBool put( const int* vals, long c0=0, long c1=0, ... )
>
> Instead you'd probably want
> data->put(&dataOut[0], dim);
> Right?
>
>
> On Tue, Nov 09, 2010 at 03:14:36PM -0800, salah jubeh wrote:
> > Hello Sjur,
> >
> > I used set_cur(), but there is no effect. and I checked the return value of
> > the
> >
> > put method and it was true which means data is written but it is not.
> >
> > Regards
> >
> >
> > ________________________________
> > From: Sjur Kolberg <Sjur.A.Kolberg@xxxxxxxxx>
> > To: salah jubeh <s_jubeh@xxxxxxxxx>; "netcdfgroup@xxxxxxxxxxxxxxxx"
> > <netcdfgroup@xxxxxxxxxxxxxxxx>
> > Sent: Tue, November 9, 2010 8:17:58 PM
> > Subject: RE: [netcdfgroup] Fw: NcVar put method
> >
> >
> > Salah,
> >
> > I think you might have to use set_cur() before the second call to put(),
> > which
> >I
> >
> > believe now tries to continue adding values after the ones you already
> > stored
> > with the first put(). Set_cur() with empty brackets sets the file pointer
> > back
>
> > to 0. If I’m correct, the second put() will also work if you comment out
> > the
> > first...
> >
> > Hope this helps,
> >
> > Sjur K :-)
> >
> >
> > From:netcdfgroup-bounces@xxxxxxxxxxxxxxxx
> > [mailto:netcdfgroup-bounces@xxxxxxxxxxxxxxxx] On Behalf Of salah jubeh
> > Sent: 9. november 2010 16:49
> > To: netcdfgroup@xxxxxxxxxxxxxxxx
> > Subject: [netcdfgroup] Fw: NcVar put method
> >
> > Sorry for sending this a gain
> >
> > ----- Forwarded Message ----
> > From:salah jubeh <s_jubeh@xxxxxxxxx>
> > To: support-netcdf@xxxxxxxxxxxxxxxx
> > Sent: Mon, November 8, 2010 12:58:41 PM
> > Subject: NcVar put method
> > I am trying to use this method signature -NcBool put(const ....* vals,
> > const
> > long* counts)-; but I have a problem , can some one please tell me what is
> > my
>
> > mistake .
> >
> > Why - data->put(&dataOut[0], *dim);- is not working. Please see the code.
> >
> >
> > #include <iostream>
> > #include <netcdfcpp.h>
> >
> > using namespace std;
> >
> > // We are writing 2D data, a 6 x 12 grid.
> > static const int NDIMS = 2;
> > static const int NX = 6;
> > static const int NY = 12;
> >
> > // Return this in event of a problem.
> > static const int NC_ERR = 2;
> >
> > int main(void)
> > {
> > // Different ways to write arrays
> >
> > int dataOut[NX * NY];
> > int dataOut2[NX] [NY];
> >
> > // Create some pretend data. Note that dataOut and dataOut2 are
> > identical...!!!
> > for(int i = 0; i < NX; i++)
> > for(int j = 0; j < NY; j++){
> > dataOut[i * NY +j] = (i+1) * (j+1);
> > dataOut2[i][j] = (i+1) * (j+1);
> > }
> >
> >
> > // Create the file.
> > NcFile dataFile("simple_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);
> >
> >
> > const NcDim* all[2] ;
> > all[0] = xDim;
> > all[1] = yDim;
> >
> > int *dim;
> > dim = new int[2];
> > dim[0] = 6;
> > dim[1] = 12;
> >
> > NcVar *data = dataFile.add_var("data", ncInt, 2, all);
> > NcVar *data2 = dataFile.add_var("data2", ncInt, 2, all);
> >
> > // This works fine and data and data2 are identical
> > // data->put(&dataOut[0],NX, NY);
> > data2->put(&dataOut2[0][0], NX, NY);
> >
> > // try to use another signature
> >
> > data->put(&dataOut[0], *dim); //nothing is written
> >
> > cout << "*** SUCCESS writing example file simple_xy.nc!" << endl;
> >
> > return 0;
> > }
> >
> >
> >
> > _______________________________________________
> > netcdfgroup mailing list
> > netcdfgroup@xxxxxxxxxxxxxxxx
> > For list information or to unsubscribe, visit:
> >http://www.unidata.ucar.edu/mailing_lists/
> >
>
>
>
>
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