问题描述
我正在尝试在 Geoviews 中绘制自定义多边形。我希望多边形以 10 度纬度增量跨越地球。我创建的多边形使用以下代码：
globeLat = pd.DataFrame(columns = ['zone','geometry'])
for i in range(int(360/10)):
p1 = [-180,(i*10)-180.00000]
p2 = [180,(i*10)-180.00000]
p3 = [180,((i+1)*10)-180.00000]
p4 = [-180,((i+1)*10)-180.00000]
pointList = [p1,p2,p3,p4,p1]
poly = geometry.polygon(pointList)
globeLat.loc[i] = [(i*15-180),poly]
display(globeLat)
然而，当我尝试在 Geoviews 上绘制此图时，出现错误。我的代码是：
polys = gv.polygons(globeLat,vdims = ['zone']).opts(width = 800,height = 400)
我收到的错误是：
ValueError Traceback (most recent call last)
<ipython-input-28-d1c663f14ed1> in <module>
5 points = data.to(gv.Points,['Longitude','Latitude'],['Temperature(C)'])
6 # osm_map = gv.tile_sources.OSM
----> 7 polys = gv.polygons(globeLat,height = 400)
8 oceanMap = gf.ocean()
9 oceanMap.opts(width = 800,height = 400) * polys * points.opts(tools=['hover'],size=10)
~\Anaconda3\envs\geoviews_test\lib\site-packages\geoviews\element\geo.py in __init__(self,data,kdims,vdims,**kwargs)
108 elif isinstance(data,_Element):
109 kwargs['crs'] = data.crs
--> 110 super(_Element,self).__init__(data,kdims=kdims,vdims=vdims,**kwargs)
111
112
~\Anaconda3\envs\geoviews_test\lib\site-packages\holoviews\element\path.py in __init__(self,**params)
262 else:
263 params['vdims'] = vdims
--> 264 super(Contours,**params)
265 if params.get('level') is not None:
266 with disable_constant(self):
~\Anaconda3\envs\geoviews_test\lib\site-packages\holoviews\element\path.py in __init__(self,**params)
83 data = paths
84
---> 85 super(Path,**params)
86
87
~\Anaconda3\envs\geoviews_test\lib\site-packages\holoviews\element\selection.py in __init__(self,*args,**kwargs)
19
20 def __init__(self,**kwargs):
---> 21 super(SelectionIndexExpr,self).__init__(*args,**kwargs)
22 self._index_skip = False
23
~\Anaconda3\envs\geoviews_test\lib\site-packages\holoviews\core\data\__init__.py in __init__(self,**kwargs)
342 datatype=kwargs.get('datatype'))
343 (data,self.interface,dims,extra_kws) = initialized
--> 344 super(Dataset,**dict(kwargs,**dict(dims,**extra_kws)))
345 self.interface.validate(self,validate_vdims)
346
~\Anaconda3\envs\geoviews_test\lib\site-packages\holoviews\core\dimension.py in __init__(self,**params)
852 params['cdims'] = {d if isinstance(d,Dimension) else Dimension(d): val
853 for d,val in params['cdims'].items()}
--> 854 super(Dimensioned,**params)
855 self.ndims = len(self.kdims)
856 cdims = [(d.name,val) for d,val in self.cdims.items()]
~\Anaconda3\envs\geoviews_test\lib\site-packages\holoviews\core\dimension.py in __init__(self,id,plot_id,**params)
511 params['group'] = long_name
512
--> 513 super(LabelledData,self).__init__(**params)
514 if not util.group_sanitizer.allowable(self.group):
515 raise ValueError("Supplied group %r contains invalid characters." %
~\Anaconda3\envs\geoviews_test\lib\site-packages\param\parameterized.py in __init__(self,**params)
2520
2521 self.param._generate_name()
-> 2522 self.param._setup_params(**params)
2523 object_count += 1
2524
~\Anaconda3\envs\geoviews_test\lib\site-packages\param\parameterized.py in override_initialization(self_,**kw)
1063 original_initialized = parameterized_instance.initialized
1064 parameterized_instance.initialized = False
-> 1065 fn(parameterized_instance,**kw)
1066 parameterized_instance.initialized = original_initialized
1067 return override_initialization
~\Anaconda3\envs\geoviews_test\lib\site-packages\param\parameterized.py in _setup_params(self_,**params)
1311 self.param.warning("Setting non-parameter attribute %s=%s using a mechanism intended only for parameters",name,val)
1312 # i.e. if not desc it's setting an attribute in __dict__,not a Parameter
-> 1313 setattr(self,val)
1314
1315 @classmethod
~\Anaconda3\envs\geoviews_test\lib\site-packages\param\parameterized.py in _f(self,obj,val)
316 instance_param.__set__(obj,val)
317 return
--> 318 return f(self,val)
319 return _f
320
~\Anaconda3\envs\geoviews_test\lib\site-packages\param\parameterized.py in __set__(self,val)
890 val = self.set_hook(obj,val)
891
--> 892 self._validate(val)
893
894 _old = NotImplemented
~\Anaconda3\envs\geoviews_test\lib\site-packages\param\__init__.py in _validate(self,val)
1386 if min_length is not None and max_length is not None:
1387 if not (min_length <= l <= max_length):
-> 1388 raise ValueError("%s: list length must be between %s and %s (inclusive)"%(self.name,min_length,max_length))
1389 elif min_length is not None:
1390 if not min_length <= l:
ValueError: kdims: list length must be between 2 and 2 (inclusive)
我有一个具有类似设置的 shapefile（有 2 列、区域和几何图形）并且代码可以使用它。但是，当我使用自定义多边形进行尝试时，出现上述错误。我尝试构建多边形以绘制图形的方式有问题吗？链接到具有多边形的全局 shapefile 的奖励积分，因此我可以完全绕过它:)
如果需要更多上下文，这里是我的存储库的链接，或者如果我能澄清任何内容，我将很乐意编辑我的问题。 https://github.com/JSLifeform/Ocean-Temperature-Comparisons/tree/broken
解决方法
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