0

我正在尝试在 Geoviews 中绘制自定义多边形。我希望多边形以 10 度的纬度增量跨越地球。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)

但是,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, vdims = ['zone']).opts(width = 800, 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, data, kdims, vdims, **params)
262         else:
263             params['vdims'] = vdims
--> 264         super(Contours, self).__init__(data, kdims=kdims, **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, data, kdims, vdims, **params)
 83             data = paths
 84 
---> 85         super(Path, self).__init__(data, kdims=kdims, vdims=vdims, **params)
 86 
 87 

~\Anaconda3\envs\geoviews_test\lib\site-packages\holoviews\element\selection.py in __init__(self, *args, **kwargs)
 19 
 20     def __init__(self, *args, **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, data, kdims, vdims, **kwargs)
342                                            datatype=kwargs.get('datatype'))
343         (data, self.interface, dims, extra_kws) = initialized
--> 344         super(Dataset, self).__init__(data, **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, data, kdims, vdims, **params)
852             params['cdims'] = {d if isinstance(d, Dimension) else Dimension(d): val
853                                for d, val in params['cdims'].items()}
--> 854         super(Dimensioned, self).__init__(data, **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, data, 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_, *args, **kw)
   1063         original_initialized = parameterized_instance.initialized
   1064         parameterized_instance.initialized = False
-> 1065         fn(parameterized_instance, *args, **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, name, 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, obj, val)
319     return _f
320 

~\Anaconda3\envs\geoviews_test\lib\site-packages\param\parameterized.py in __set__(self, obj, 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),并且代码可以使用它。但是,当我尝试使用自定义多边形时,会出现上述错误。我尝试构建多边形以绘制它的方式有什么问题吗?链接到带有多边形的全局 shapefile 的加分点,所以我可以完全绕过它:)

如果需要更多上下文,这是我的存储库的链接,或者如果我能澄清任何事情,我很乐意编辑我的问题。https://github.com/JSLifeform/Ocean-Temperature-Comparisons/tree/broken

4

0 回答 0