[英]AttributeError: Unknown property column in Geopandas plotting of events in zipcode shp file
I am trying to create a Choropleth map showing fire incidents throughout a county in NC.我正在尝试创建一个 Choropleth 地图,显示整个北卡罗来纳州一个县的火灾事件。 I have the data in a Dataframe and last night I was able to export maps.
我在 Dataframe 中有数据,昨晚我能够导出地图。 The only problem was that the data exported was not accurate--so there was a problem with my code.
唯一的问题是导出的数据不准确——所以我的代码有问题。 I think I managed to fix that, by merging the shapefiles and data dataframes together, but now, when I run the portion that creates the map, I get
AttributeError: Unknown property column
Full message:我想我设法通过将 shapefile 和数据数据帧合并在一起来解决这个问题,但是现在,当我运行创建地图的部分时,我收到
AttributeError: Unknown property column
Full 消息:
AttributeError Traceback (most recent call last)
<ipython-input-74-61a60b41abbe> in <module>()
13 # create map
14
---> 15 merged_df.plot(column=variable, cmap='Reds', linewidth=0.8, ax=ax, edgecolor='0.8');
16
17 ax.axis('off')
~\Anaconda3\lib\site-packages\pandas\plotting\_core.py in __call__(self, x, y, kind, ax, subplots, sharex, sharey, layout, figsize, use_index, title, grid, legend, style, logx, logy, loglog, xticks, yticks, xlim, ylim, rot, fontsize, colormap, table, yerr, xerr, secondary_y, sort_columns, **kwds)
2939 fontsize=fontsize, colormap=colormap, table=table,
2940 yerr=yerr, xerr=xerr, secondary_y=secondary_y,
-> 2941 sort_columns=sort_columns, **kwds)
2942 __call__.__doc__ = plot_frame.__doc__
2943
~\Anaconda3\lib\site-packages\pandas\plotting\_core.py in plot_frame(data, x, y, kind, ax, subplots, sharex, sharey, layout, figsize, use_index, title, grid, legend, style, logx, logy, loglog, xticks, yticks, xlim, ylim, rot, fontsize, colormap, table, yerr, xerr, secondary_y, sort_columns, **kwds)
1975 yerr=yerr, xerr=xerr,
1976 secondary_y=secondary_y, sort_columns=sort_columns,
-> 1977 **kwds)
1978
1979
~\Anaconda3\lib\site-packages\pandas\plotting\_core.py in _plot(data, x, y, subplots, ax, kind, **kwds)
1802 plot_obj = klass(data, subplots=subplots, ax=ax, kind=kind, **kwds)
1803
-> 1804 plot_obj.generate()
1805 plot_obj.draw()
1806 return plot_obj.result
~\Anaconda3\lib\site-packages\pandas\plotting\_core.py in generate(self)
258 self._compute_plot_data()
259 self._setup_subplots()
--> 260 self._make_plot()
261 self._add_table()
262 self._make_legend()
~\Anaconda3\lib\site-packages\pandas\plotting\_core.py in _make_plot(self)
983 stacking_id=stacking_id,
984 is_errorbar=is_errorbar,
--> 985 **kwds)
986 self._add_legend_handle(newlines[0], label, index=i)
987
~\Anaconda3\lib\site-packages\pandas\plotting\_core.py in _plot(cls, ax, x, y, style, column_num, stacking_id, **kwds)
999 cls._initialize_stacker(ax, stacking_id, len(y))
1000 y_values = cls._get_stacked_values(ax, stacking_id, y, kwds['label'])
-> 1001 lines = MPLPlot._plot(ax, x, y_values, style=style, **kwds)
1002 cls._update_stacker(ax, stacking_id, y)
1003 return lines
~\Anaconda3\lib\site-packages\pandas\plotting\_core.py in _plot(cls, ax, x, y, style, is_errorbar, **kwds)
613 else:
614 args = (x, y)
--> 615 return ax.plot(*args, **kwds)
616
617 def _get_index_name(self):
~\Anaconda3\lib\site-packages\matplotlib\__init__.py in inner(ax, data, *args, **kwargs)
1808 "the Matplotlib list!)" % (label_namer, func.__name__),
1809 RuntimeWarning, stacklevel=2)
-> 1810 return func(ax, *args, **kwargs)
1811
1812 inner.__doc__ = _add_data_doc(inner.__doc__,
~\Anaconda3\lib\site-packages\matplotlib\axes\_axes.py in plot(self, scalex, scaley, *args, **kwargs)
1609 kwargs = cbook.normalize_kwargs(kwargs, mlines.Line2D._alias_map)
1610
-> 1611 for line in self._get_lines(*args, **kwargs):
1612 self.add_line(line)
1613 lines.append(line)
~\Anaconda3\lib\site-packages\matplotlib\axes\_base.py in _grab_next_args(self, *args, **kwargs)
391 this += args[0],
392 args = args[1:]
--> 393 yield from self._plot_args(this, kwargs)
394
395
~\Anaconda3\lib\site-packages\matplotlib\axes\_base.py in _plot_args(self, tup, kwargs)
381 "with non-matching shapes is deprecated.")
382 for j in range(max(ncx, ncy)):
--> 383 seg = func(x[:, j % ncx], y[:, j % ncy], kw, kwargs)
384 ret.append(seg)
385 return ret
~\Anaconda3\lib\site-packages\matplotlib\axes\_base.py in _makeline(self, x, y, kw, kwargs)
286 default_dict = self._getdefaults(None, kw)
287 self._setdefaults(default_dict, kw)
--> 288 seg = mlines.Line2D(x, y, **kw)
289 return seg
290
~\Anaconda3\lib\site-packages\matplotlib\lines.py in __init__(self, xdata, ydata, linewidth, linestyle, color, marker, markersize, markeredgewidth, markeredgecolor, markerfacecolor, markerfacecoloralt, fillstyle, antialiased, dash_capstyle, solid_capstyle, dash_joinstyle, solid_joinstyle, pickradius, drawstyle, markevery, **kwargs)
408 # update kwargs before updating data to give the caller a
409 # chance to init axes (and hence unit support)
--> 410 self.update(kwargs)
411 self.pickradius = pickradius
412 self.ind_offset = 0
~\Anaconda3\lib\site-packages\matplotlib\artist.py in update(self, props)
914
915 with cbook._setattr_cm(self, eventson=False):
--> 916 ret = [_update_property(self, k, v) for k, v in props.items()]
917
918 if len(ret):
~\Anaconda3\lib\site-packages\matplotlib\artist.py in <listcomp>(.0)
914
915 with cbook._setattr_cm(self, eventson=False):
--> 916 ret = [_update_property(self, k, v) for k, v in props.items()]
917
918 if len(ret):
~\Anaconda3\lib\site-packages\matplotlib\artist.py in _update_property(self, k, v)
910 func = getattr(self, 'set_' + k, None)
911 if not callable(func):
--> 912 raise AttributeError('Unknown property %s' % k)
913 return func(v)
914
AttributeError: Unknown property column
I have no idea how to fix this.我不知道如何解决这个问题。 I've googled and tried changing the dtype from float to int, tried different columns, but no change.
我用谷歌搜索并尝试将 dtype 从 float 更改为 int,尝试了不同的列,但没有任何变化。 I don't understand because it worked last night, but didn't work when I tried to run it today before making changes.
我不明白,因为它昨晚起作用了,但是当我今天尝试在进行更改之前运行它时却不起作用。 Thank you in advance for any help.
预先感谢您的任何帮助。 Below is the bulk of my code that contains the data frame and mapping, everything else is just getting data from csvs:
下面是我的大部分代码,其中包含数据框和映射,其他一切都只是从 csvs 获取数据:
import pandas as pd
import numpy as np
#import googlemaps
import gmaps
import gmaps.datasets
import geopandas as gpd
#import matplotlib as plt
import matplotlib.pyplot as plt
import os
import plotly.plotly as py
import plotly.tools as tls
This is what the merged dataframe looks like:这是合并后的数据框的样子:
OBJECTID_x int64
ZIPNUM float64
address object
address2 object
apt_room object
arrive_date_time object
cleared_date_time object
dispatch_date_time object
exposure int64
incident_number object
incident_type int64
incident_type_description object
platoon object
station float64
Longitude object
Latitude object
Year int64
Date object
Arr Time object
Seconds float64
Incident object
OBJECTID_y int64
ZIPNAME object
ZIPCODE object
NAME object
SHAPEAREA float64
SHAPELEN float64
LAST_EDITE object
geometry object
dtype: object
# set a variable that will call column to visualise on the map
variable = 'ZIPNUM'
# set the range for the choropleth
vmin, vmax = 50, 2000
# create figure and axes for Matplotlib
fig, ax = plt.subplots(1, figsize=(15, 15))
# create map
merged_df.plot(column=variable, cmap='Reds', linewidth=0.8, ax=ax, edgecolor='0.8');
ax.axis('off')
ax.set_title('Fire Incident Rate in Wake County', fontdict={'fontsize': '25', 'fontweight' : '3'})
# Create colorbar as a legend
sm = plt.cm.ScalarMappable(cmap='Reds', norm=plt.Normalize(vmin=vmin, vmax=vmax))
# empty array for the data range
sm._A = []
# add the colorbar to the figure
cbar = fig.colorbar(sm)
ax.annotate('2008-2018',
xy=(0.001, .225), xycoords='figure fraction',
horizontalalignment='left', verticalalignment='top',
fontsize=35)
fig.savefig("Fire Incident Rate in Wake County 2008-2018.png", dpi=300)
The problem is that you are trying to use column
as a keyword argument.问题是您试图使用
column
作为关键字参数。 Since you want to plot the 'ZIPNUM'
column of the DataFrame, which you store in a variable called variable
, you can just pass it as a positional argument to plot()
.由于您想绘制存储在名为
variable
的变量中的 DataFrame 的'ZIPNUM'
列,您可以将其作为位置参数传递给plot()
。 If you want to plot a relationship between two variables, you can use keyword arguments merged_df.plot(x=variable1, y=variable2)
如果你想绘制两个变量之间的关系,你可以使用关键字参数
merged_df.plot(x=variable1, y=variable2)
For you case, you can use对于你的情况,你可以使用
variable = 'ZIPNUM'
merged_df.plot(variable, cmap='Reds', linewidth=0.8, ax=ax, edgecolor='0.8');
EDIT (based on comments)编辑(基于评论)
You should use markeredgecolor
only if you use marker
for plotting.仅当您使用
marker
进行绘图时才应使用marker
markeredgecolor
。 edgecolor
is not the correct keyword. edgecolor
不是正确的关键字。 Moreover, you are assigning a number (string) as color which is again incorrect.此外,您正在分配一个数字(字符串)作为颜色,这又是不正确的。 Below is a simple example.
下面是一个简单的例子。
df = pd.DataFrame([[1, 2], [3, 4], [5, 6], [7, 8]], columns=["A", "B"])
column='A'
df.plot(column, linewidth=0.8, color='r', marker ='o', markeredgewidth=2,
markeredgecolor='blue')
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