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Martin Hope
Kernel
Asked: 2025-01-19 02:01:19 +0800 CST
  • 5

我尝试通过将缺失日期与未缺失日期列表进行比较来获取缺失日期的索引，如下所示：

a = pd.DatetimeIndex(["2000", "2001", "2002", "2003",
                      "2004", "2005", "2009", "2010"])
b = pd.DatetimeIndex(["2000", "2001", "2002", "2003",
                      "2004", "2005", "2006", "2007",
                      "2008", "2009", "2010"])
a.reindex(b)

我得到了以下

(DatetimeIndex(['2000-01-01', '2001-01-01', '2002-01-01', '2003-01-01',
                '2004-01-01', '2005-01-01', '2006-01-01', '2007-01-01',
                '2008-01-01', '2009-01-01', '2010-01-01'],
               dtype='datetime64[ns]', freq=None),
 array([ 0,  1,  2,  3,  4,  5, -1, -1, -1,  6,  7]))

我尝试用 -1 替换所有缺失值到 Nan，a.reindex(b, fill_value=np.NAN)但出现以下错误TypeError: Index.reindex() got an unexpected keyword argument ‘fill_value’

根据pandas 文档， fill_vaue 是 reindex 的参数之一。有什么想法吗？

python
Martin Hope
Kernel
Asked: 2025-01-07 03:05:41 +0800 CST
  • 6

全部，我使用 ESRI 世界国家通用形状文件，该文件可在此处 使用 GeoPandas获取

shp_file =gpd.read_file('World_Countries/World_Countries_Generalized.shp')
print(shp_file.crs)

我得到的 CRS 是EPSG:3857，但是一旦我将 CRS 添加到 gpd.read_file，如下所示

shp_file1 =gpd.read_file('../../Downloads/World_Countries/World_Countries_Generalized.shp',crs='EPSG:3857')

我收到以下错误 /opt/anaconda3/envs/geo_env/lib/python3.12/site-packages/pyogrio/raw.py:198: RuntimeWarning: driver ESRI Shapefile does not support open option CRS return ogr_read(

你知道我为什么会收到这个错误吗？这是否意味着文件读取不正确？

谢谢

python
Martin Hope
Kernel
Asked: 2024-12-21 18:54:38 +0800 CST
  • 6

大家好，当我尝试导入 states.geojson 文件时出现以下错误，如本页https://www.twilio.com/en-us/blog/geospatial-analysis-python-geojson-geopandas-html中所述。我认为此文件是 geopands 预装的文件之一。

我正在使用 geopandas 版本 0.14.4

import geopandas as gpd
states = gpd.read_file('states.geojson')

这是错误

Traceback (most recent call last):

  File fiona/ogrext.pyx:130 in fiona.ogrext.gdal_open_vector

  File fiona/ogrext.pyx:134 in fiona.ogrext.gdal_open_vector

  File fiona/_err.pyx:375 in fiona._err.StackChecker.exc_wrap_pointer

CPLE_OpenFailedError: states.geojson: No such file or directory


The above exception was the direct cause of the following exception:

Traceback (most recent call last):

  Cell In[1], line 2
    states = gpd.read_file('states.geojson') # built in-file

  File ~/anaconda3/lib/python3.11/site-packages/geopandas/io/file.py:289 in _read_file
    return _read_file_fiona(

  File ~/anaconda3/lib/python3.11/site-packages/geopandas/io/file.py:315 in _read_file_fiona
    with reader(path_or_bytes, **kwargs) as features:

  File ~/anaconda3/lib/python3.11/site-packages/fiona/env.py:457 in wrapper
    return f(*args, **kwds)

  File ~/anaconda3/lib/python3.11/site-packages/fiona/__init__.py:342 in open
    colxn = Collection(

  File ~/anaconda3/lib/python3.11/site-packages/fiona/collection.py:226 in __init__
    self.session.start(self, **kwargs)

  File fiona/ogrext.pyx:876 in fiona.ogrext.Session.start

  File fiona/ogrext.pyx:136 in fiona.ogrext.gdal_open_vector

DriverError: Failed to open dataset (flags=68): states.geojson

谢谢

python