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Re: 20050628: netCDF constants
- Subject: Re: 20050628: netCDF constants
- Date: Tue, 28 Jun 2005 08:57:43 -0600
Unidata Support <address@hidden> writes:
> ------- Forwarded Message
>
>>To: support <address@hidden>
>>From: "meteo.ru" <address@hidden>
>>Subject: netCDF constants
>>Organization: ?
>>Keywords: 200506281213.j5SCDaW4017924 netCDF missing data values
>
> Hello, support team.
>
> What are the constants of missing data values for each data type (e.g.
> int, double, char)?
>
> --
> Best regards, Sergey Sukhonosov mailto:address@hidden
Howdy Sergey!
From netcdf.h:
/*
* Default fill values, used unless _FillValue attribute is set.
* These values are stuffed into newly allocated space as appropriate.
* The hope is that one might use these to notice that a particular datum
* has not been set.
*/
#define NC_FILL_BYTE ((signed char)-127)
#define NC_FILL_CHAR ((char)0)
#define NC_FILL_SHORT ((short)-32767)
#define NC_FILL_INT (-2147483647L)
#define NC_FILL_FLOAT (9.9692099683868690e+36f) /* near 15 * 2^119 */
#define NC_FILL_DOUBLE (9.9692099683868690e+36)
For more information on fill values, take a look at:
http://my.unidata.ucar.edu/content/software/netcdf/docs/netcdf-c/Fill-Values.html
Does this answer your question?
Ed
--
Ed Hartnett -- address@hidden
