Mr Chaitanya and list， You are so kind and help me again and again. Thanks for your help very much! Now, I can get more fields of a feature like ORNT、USAG after setting environment variable OGR_S57_OPTIONS = "RETURN_LINKAGES=ON,RETURN_PRIMITIVE=ON,RETURN_REFS=ON". However, I don’t think I've got the feature's attribute field. For instance, I got a point symbol and its OBJL=159 which means it was a Wreck symbol and I thought I should get some info like CATWRK=.. QUASOU=...if I can get its attribute field. Then can you tell me whether I can do something else for this? Thanks a lot!
Best Regards, Randy -----邮件原件----- 发件人: Chaitanya kumar CH [mailto:[email protected]] 发送时间: 2009年9月26日 20:51 收件人: Randy 抄送: GDAL/OGR mailing list 主题: Re: [gdal-dev] Why cannot I get all fields from s57 files with method GetFieldAsString? Randy, You need to set the environment variable OGR_S57_OPTIONS = "RETURN_LINKAGES=ON" for the driver to return the FSPT group attributes. It is described in http://www.gdal.org/ogr/drv_s57.html 2009/9/26 Randy <[email protected]>: > Hi list, > > Under Mr Frank and Mr Chaitanya’s guidance, I try to get every feature’s > field(including its name and value). But I find that I cannot get all > fields. The following is my code snippet(in MFC): > > CString strEnd=”\r\n”; > > int nFieldCount=0; > > > for(nFieldCount=0;nFieldCount<poFeature->GetFieldCount();nFieldCount++) > > { > > > poFieldDefn=poFeature->GetFieldDefnRef(nFieldCount); > > fieldName=poFieldDefn->GetNameRef(); > > > fileFieldAttr.Write(fieldName,strlen(fieldName)); > > > outputFieldAttr=poFeature->GetFieldAsString(nFieldCount); > > > fileFieldAttr.Write(outputFieldAttr+strEnd,strlen(outputFieldAttr)+2); > > } > > Then, what I got was as follows: > > RCID3 > > PRIM1 > > GRUP2 > > OBJL9 > > RVER1 > > AGEN550 > > FIDN344289455 > > FIDS2233 > > LNAM0226148570AF08B9 > > LNAM_REFS(2:02261485702E08B9,02261485703208B9) > > FFPT_RIND(2:2,2) > > RCID4 > > PRIM1 > > GRUP2 > > OBJL39 > > ………… > > > > It means that I didn’t get the feature’s attribute field(ATTF) like > ATTL、ATVL and feature’s FSPT field(Feature Record to Spatial Record Pointer) > like ORNT、USAG、MASK. > > Then who can tell me what’s wrong with my code? > > Thanks a lot!!! > > > > Best Regards, > > Randy. > > > > _______________________________________________ > gdal-dev mailing list > [email protected] > http://lists.osgeo.org/mailman/listinfo/gdal-dev > -- Best regards, Chaitanya kumar CH. _______________________________________________ gdal-dev mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/gdal-dev
