Re: [netcdfgroup] Fw: NcVar put method

• To: salah jubeh <s_jubeh@xxxxxxxxx>
• Subject: Re: [netcdfgroup] Fw: NcVar put method
• From: Stuart Levy <slevy@xxxxxxxxxxxxxxxxx>
• Date: Tue, 9 Nov 2010 17:40:07 -0600

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;
> }
> 
> 
>       
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• References:
  • [netcdfgroup] Fw: NcVar put method
    • From: salah jubeh
  • Re: [netcdfgroup] Fw: NcVar put method
    • From: Sjur Kolberg
  • Re: [netcdfgroup] Fw: NcVar put method
    • From: salah jubeh