[gdal-dev] 1.11 OGR_F_SetFieldDouble() then OGR_F_GetFieldAsDouble() always returns zero

[Even Rouault]

Nik,

Using OGR_F_SetFieldXXXXX() only modifies the in-memory value, but has 
no effect on serialization. You have to use OGR_L_SetFeature() to make sure 
that the modified feature is written back to the datasource.

As it seems to be a common pitfall, I'm going to improve the doc of the 
OGR_F_SetFieldXXXX functions to make that clear.

Even

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