统计汇总
===============

1.描述
------------
用于面积等汇总，支持分组。

2.使用限制
----------------
sum对应字段必须是数值型。

3.算子id
----------------
idata.gis.zcqc.Statistics

4.参数列表
---------------

+----------+-------------------+------------------------+--------+---------------------------------------------------------------------------------------------------------------------------------------------------------------+----------+
| 参数类型 | 参数名称          | 参数关键字             | 必要性 | 参数说明                                                                                                                                                      | 数据类型 |
+----------+-------------------+------------------------+--------+---------------------------------------------------------------------------------------------------------------------------------------------------------------+----------+
| 输入参数 | layer             | 待统计图层             | Y      |  zk地址，catalog，图层名，用半角逗号分隔                                                                                                                      | String   |
+----------+-------------------+------------------------+--------+---------------------------------------------------------------------------------------------------------------------------------------------------------------+----------+
|          | fields_group      | 分组字段               | Y      |  多个字段用半角逗号分隔                                                                                                                                       | String   |
+----------+-------------------+------------------------+--------+---------------------------------------------------------------------------------------------------------------------------------------------------------------+----------+
|          | fields_value      | 统计值字段             | Y      |   统计方式(字段名)，多个用半角逗号分隔，支持sum、count、avg等。                                                                                               | String   |
+----------+-------------------+------------------------+--------+---------------------------------------------------------------------------------------------------------------------------------------------------------------+----------+
+----------+-------------------+------------------------+--------+---------------------------------------------------------------------------------------------------------------------------------------------------------------+----------+
| 输出参数 | layer2            | 结果表名               | Y      | zk地址，catalog，图层名，用半角逗号分隔。                                                                                                                     | String   |
+----------+-------------------+------------------------+--------+---------------------------------------------------------------------------------------------------------------------------------------------------------------+----------+

5.配置面板
--------------------

.. image:: ../../../_static/images/gsi_gy/geosot/Statistics_geosot.jpg
   :width: 327px


6.调用示例
------------------
.. code::
   
   {
    
     "params":{
       "layer":"bd2022.whrdc:2181,zcqc_cg,jsydzctz2",
       "fields_group":"lxbm1",
       "fields_value":"sum(ystxmj1),sum(ystxmj2),sum(txmj),sum(ztbmj2),count(txmj),count(zcqcbsm2)",
       "layer2":"bd2022.whrdc:2181,zcqc_cg,jsydzctz4"
     },
     "identifier":"idata.gis.zcqc.Statistics"
   }