当我尝试使用ulmo库从USGS检索沉积物排放数据时出现错误
ulmo.usgs.nwis.get_site_data('08332010', parameter_code='80155', \
service="daily", start='1969-10-01', end='2016-09-30')
它返回
processing data from request: https://waterservices.usgs.gov/nwis/dv/?
format=waterml&site=08332010¶meterCd=80155&startDT=1969-10-
01&endDT=2016-09-30
------------------------------------------------------------------------
ValueError Traceback (most recent call last)
<ipython-input-184-3ae1371577c1> in <module>()
----> 1 df = ulmo.usgs.nwis.get_site_data('08332010',
parameter_code='80155', service="daily", start='1969-10-01', end='2016-
09-30')
/usr/local/lib/python3.6/dist-packages/ulmo/usgs/nwis/core.py in
get_site_data(site_code, service, parameter_code, statistic_code, start,
end, period, modified_since, input_file, methods, **kwargs)
259 url_params.update(kwargs)
260 values = _get_site_values(service, url_params,
input_file=input_file,
--> 261 methods=methods)
262 else:
263 kw = dict(parameter_code=parameter_code,
statistic_code=statistic_code,
/usr/local/lib/python3.6/dist-packages/ulmo/usgs/nwis/core.py in
_get_site_values(service, url_params, input_file, methods)
336 with _open_input_file(input_file) as content_io:
337 data_dict = wml.parse_site_values(content_io, query_isodate,
--> 338 methods=methods)
339
340 for variable_dict in list(data_dict.values()):
/usr/local/lib/python3.6/dist-packages/ulmo/waterml/v1_1.py in parse_site_values(content_io, query_isodate, methods)
14 return common.parse_site_values(
15 content_io, WATERML_V1_1_NAMESPACE, query_isodate=query_isodate,
---> 16 methods=methods)
17
18
/usr/local/lib/python3.6/dist-packages/ulmo/waterml/common.py in parse_site_values(content_io, namespace, query_isodate, methods)
41 raise ValueError(
42 'found more than one method for %s. need to specify'
---> 43 'specify code or "all".' % variable['code'])
44 values_element = values_elements[0]
45 values = _parse_values(values_element, namespace)
ValueError: found more than one method for 80155. need to specifyspecify code or "all".
我为所有人指定了方法,但仍然遇到了同样的错误。关于如何解决它的任何想法?
答案 0 :(得分:0)
请参见Ulmo文档:
方法:'None',str或Python dict如果为None(默认),则假定每个参数只有一个方法。这引发了一个错误 如果遇到多个方法ID。如果为str,则为 所请求参数的方法ID,如果方法可以使用“ all” id事先未知。如果是dict,请提供parameter_code以 方法ID映射。参数的方法ID特定于站点。
因此添加methods = "all"