Chaitanya kumar CH wrote:
Randy,
Perhaps the info you are looking for can be found under OGRFieldDefn
instead of OGRField at http://www.gdal.org/ogr/hierarchy.html
Randy,
I would add there is a general discussion of the OGR data model at:
http://www.gdal.org/ogr/ogr_arch.html
And an introduction to writing applications on the API at:
http://www.gdal.org/ogr/ogr_apitut.html
Normally you would not interact with OGRField directly, instead
using the OGRFeature methods like GetFieldAsString() or
GetFieldAsInteger() to fetch the values. As Chaitanya mentions,
the OGRFeatureDefn (fetched from the OGRLayer using GetDefnRef())
has info on what the fields names and types are.
In the case of S-57, the S-57 driver page also has some
useful background:
http://www.gdal.org/ogr/drv_s57.html
2009/9/24 Randy <randyqi...@hotmail.com>:
Hi everyone,
Sorry to interrupt you!
I’m a new boy in OGR and s_57. I feel that there is no very explicit
introduction about OGR’s details. Now, I don’t know where should I use
OGRFiled since I don’t understand its details such as Set、Binary、Date in
S_57. Anyone can explain it for me? I read OGR’s open source code, but it
doesn’t seem like it gives us enough information and notation.
Besides that, anyone could tell me where I can find the more explicit
introduction about OGR, I mean almost each part of the OGR?
Best regards,
Randy
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