我在country_map
中使用apache-superset用于可视化目的。放大多边形时,列中的信息会出现在多边形内部,如下所示:
可在此路径中找到度量标准更新的代码:
超/资产/ src目录/可视化/ CountryMap / CountryMap.js
码:
const updateMetrics = function (region) {
if (region.length > 0) {
resultText.text(format(region[0].metric));
}
};
度量标准在controls.jsx中定义:
/superset/static/assets/双人床/explore/controls.及时性
const metrics = {
type: 'MetricsControl',
multi: true,
label: t('Metrics'),
validators: [v.nonEmpty],
default: (c) => {
const metric = mainMetric(c.savedMetrics);
return metric ? [metric] : null;
},
mapStateToProps: (state) => {
const datasource = state.datasource;
return {
columns: datasource ? datasource.columns : [],
savedMetrics: datasource ? datasource.metrics : [],
datasourceType: datasource && datasource.type,
};
},
description: t('One or many metrics to display'),
};
const metric = {
...metrics,
multi: false,
label: t('Metric'),
default: props => mainMetric(props.savedMetrics),
};
国家地图使用的是metric
,它不允许选择多个指标,代码可在此处找到:
超/资产/ src目录/浏览/ controlPanels / CountryMap.js
controlPanelSections: [
{
label: t('Query'),
expanded: true,
controlSetRows: [
['entity'],
['metric'],
['adhoc_filters'],
],
},
{
label: t('Options'),
expanded: true,
controlSetRows: [
['select_country', 'number_format'],
['linear_color_scheme'],
],
},
],
country_map
的python类位于viz.py:
class CountryMapViz(BaseViz):
"""A country centric"""
viz_type = 'country_map'
verbose_name = _('Country Map')
is_timeseries = False
credits = 'From bl.ocks.org By john-guerra'
def query_obj(self):
qry = super(CountryMapViz, self).query_obj()
qry['metrics'] = [
self.form_data['metric']]
qry['groupby'] = [self.form_data['entity']]
return qry
将CountryMap.js和viz.py中的代码从metric
更改为metrics
会导致以下错误:
Traceback (most recent call last):
File "/Documents/superset/superset/superset/viz.py", line 410, in get_df_payload
df = self.get_df(query_obj)
File "/Documents/superset/superset/superset/viz.py", line 213, in get_df
self.results = self.datasource.query(query_obj)
File "/Documents/superset/superset/superset/connectors/sqla/models.py", line 797, in query
sql = self.get_query_str(query_obj)
File "/Documents/superset/superset/superset/connectors/sqla/models.py", line 471, in get_query_str
qry = self.get_sqla_query(**query_obj)
File "/Documents/superset/superset/superset/connectors/sqla/models.py", line 585, in get_sqla_query
elif m in metrics_dict:
TypeError: unhashable type: 'list'
如何在多边形内部添加更多指标?
错误TypeError: unhashable type: 'list'
的直接原因是您对文件“viz.py”的修改:
self.form_data['metric']]
到self.form_data['metrics']]
,用query_obj(self)
方法。
正如您在源代码here中看到的,表单数据metrics
是包含list
的metric
对象,其中metric
可能是字符串或其他可哈希对象。在python语言中,list
对象不可清除。因为用不可混合的对象(metric
)替换可散列对象(metrics
),然后会引发unhashable type
错误。
修改CoutryMapViz.query_obj()
以接受metrics
查询的正确方法可以在其他Viz
类中找到。代码部分here是一个非常好的例子:
class CalHeatmapViz(BaseViz):
"""Calendar heatmap."""
...
def query_obj(self):
d = super(CalHeatmapViz, self).query_obj()
fd = self.form_data
d['metrics'] = fd.get('metrics')
return d
最后,CoutryMapViz.query_obj()
方法应如下所示:
class CountryMapViz(BaseViz):
...
def query_obj(self):
qry = super(CountryMapViz, self).query_obj()
qry['metrics'] = fd.get('metrics')
qry['groupby'] = [self.form_data['entity']]
return qry