基于ArcEngine实现分组统计面积的功能

基于ArcEngine实现分组统计面积的功能

IQueryFilter qf=new QueryFilterClass();

qf.subfield="qsdwdm,qsxz,dlbm,sum(mj) as mj,sum(tkmj) as tkmj"
qf .whereclause="";
(IQueryFilterDefinition)qf.PostfixClause="group by qsdwdm,qsxz,blbm order by blbm ";

IFeautureClass fc=OpenFeatureClass(LayerName);

IFeautureCursor feacur= fc.search(qf,false);

实现了Select qsdwdm,qsxz,dlbm,sum(mj) as mj

from tab

where 1=1

group by xxx

order by YYY的格式的SQL语句的语法

使用

ESRI.ArcGIS.AnalysisTools

Frequency Members

也可!