箱线图
==============

说明：目前使用箱型图，由后端处理所有数据，按格式传给前端  

https://echarts.baidu.com/examples/editor.html?c=boxplot-light-velocity  

前端应该对用户说明，数值相差很大的列不应该使用箱型图一起展示，应该先归一化，避免显示不正常

参数
---------------

+------------------------+--------+----------+--------------+
| 名称                   | 类型   | 是否必传 | 备注         |
+------------------------+--------+----------+--------------+
| inputarg               | array  | Y        | 字段集合     |
+------------------------+--------+----------+--------------+
| inputarg.#.tbname1     | string | Y        | 表名         |
+------------------------+--------+----------+--------------+
| inputarg.#.columnArray | array  | Y        | 字段名称集合 |
+------------------------+--------+----------+--------------+



返回
-------------

+--------+--------+----------+--------------------------------+
| 名称   | 类型   | 是否必传 | 备注                           |
+--------+--------+----------+--------------------------------+
| result | String | Y        | 所有输出的JSON，按节点类型解析 |
+--------+--------+----------+--------------------------------+


算法入口及参数
-----------------------

+---------+-----------------------------------------------------------------+--------------+
| 名称    | 示例                                                            | 备注         |
+---------+-----------------------------------------------------------------+--------------+
| args[0] | tmptb2019062511473300088201                                     | 输入表名     |
+---------+-----------------------------------------------------------------+--------------+
| args[1] | sepal_length,petal_width                                        | 需要检测的列 |
+---------+-----------------------------------------------------------------+--------------+
| args[2] | hdfs://namenode:9000/ispatial/sysfile/tmp2019062605545200088301 | 结果存储地址 |
+---------+-----------------------------------------------------------------+--------------+



配置模版
-----------------------

.. code::

    {
        "label": "箱线图",
        "name": "boxplot",
        "chartType": "boxplot",
        "params": {
            "input_nodes": [
                {
                    "key": "tbname1",
                    "desc": "输入数据表",
                    "func": "changeTableColumns",
                    "type": "table"
                }
            ],
            "input_form": [
                {
                    "key": "columnArray",
                    "label": "数据字段",
                    "placeholder": "请选择数据字段",
                    "type": "select",
                    "options": "getTableColumns",
                    "onChange": "",
                    "multiple": true
                }
            ],
            "output_nodes": [
                {
                    "key": "output1",
                    "desc": "输出结果地址",
                    "type": "pmml",
                    "display": "hidden"
                }
            ]
        },
        "chart_option": {
            "title": [
                {
                    "text": "箱型图统计分析结果",
                    "left": "center"
                },
                {
                    "text": "upper: Q3 + 1.5 * IQR \nlower: Q1 - 1.5 * IQR",
                    "borderColor": "#999",
                    "borderWidth": 1,
                    "textStyle": {
                        "fontSize": 14
                    },
                    "left": "10%",
                    "top": "90%"
                }
            ]
        }
    }