A Tuesday 16 March 2010 23:56:38 Anton Kulchitsky escrigué:
> I would like to specify physical units and long names for every field of
> a compound object. I have an array of particles. Each particle is
> specified as a C structure with many fields associated with it. I would
> like to have an attribute for every field. However, when I create a
> compound object, I am not able to specify an attribute for a
> field. I am wondering if anyone has similar problem?
An elegant solution for this would be to write a compound type attribute, with
the first field specifying the field to be described and the others with
complementary info. For example, if you have a table with two fields, one
possibility is to describe it with a `descr` attribute like:
Attribute: descr {2}
Type: struct {
"fieldname" +0 10-byte null-terminated ASCII
string
"unit" +10 10-byte null-terminated ASCII
string
"expl" +20 60-byte null-terminated ASCII
string
"scale" +80 native double
} 88 bytes
Data: {"field1", "kg", "long explanatory field 1", 1.2},
{"field2", "km/s", "long explanatory field 2", 24.3}
This is simple and quite powerful, IMO.
--
Francesc Alted
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