我正在尝试将shapefile加载到Django中
我的资料夹
vnm_polbn_adm3_2014_pdc.dbf
vnm_polbn_adm3_2014_pdc.prj
vnm_polbn_adm3_2014_pdc.qpj
vnm_polbn_adm3_2014_pdc.shp
vnm_polbn_adm3_2014_pdc.shx
当我运行此:
simon@DESKTOP-V82N14G:/mnt/c/WINDOWS/system32/poc_dashboard/pocdash$ ogrinfo -ro -so testdjango/data/vnm_polbn_adm3_2014_pdc.shp
INFO: Open of `testdjango/data/vnm_polbn_adm3_2014_pdc.shp'
using driver `ESRI Shapefile' successful.
1: vnm_polbn_adm3_2014_pdc (Polygon)
当我使用python shell运行我的代码时:
python manage.py shell
from testdjango import load_layer
load_layer.run()
它返回我:
Traceback (most recent call last):
File "<console>", line 1, in <module>
File "/mnt/c/WINDOWS/system32/poc_dashboard/pocdash/testdjango/load_layer.py", line 27, in run
lm = LayerMapping(Adm3_names, adm3_name_shp, adm3_name_mapping, transform= False, encoding='iso-8859-1')
File "/mnt/c/WINDOWS/system32/poc_dashboard/poc/lib/python3.6/site-packages/django/contrib/gis/utils/layermapping.py", line 92, in __init__
self.ds = DataSource(data, encoding=encoding)
File "/mnt/c/WINDOWS/system32/poc_dashboard/poc/lib/python3.6/site-packages/django/contrib/gis/gdal/datasource.py", line 74, in __init__
raise GDALException('Could not open the datasource at "%s"' % ds_input)
django.contrib.gis.gdal.error.GDALException: Could not open the datasource at "/mnt/c/WINDOWS/system32/poc_dashboard/pocdash/testdjango/testdjango/data/vnm_polbn_adm3_2014_pdc.shp"
我的代码有问题还是shapefile有问题?我附加了文件here
import os
from django.contrib.gis.utils import LayerMapping
from django.contrib.gis.db import models
from .models import Adm3_names
adm3_name_mapping = {
'gid': 'gid',
'adm1_code': 'adm1_code',
'adm1_name': 'adm1_name',
'adm2_code': 'adm2_code',
'adm2_name': 'adm2_name',
'adm3_code': 'adm3_code',
'adm3_name': 'adm3_name',
'adm3_statu': 'adm3_statu',
'pop': 'pop',
'pop_0to14': 'pop_0to14',
'pop_65plus': 'pop_65plus',
'hh': 'hh',
'shape_leng': 'shape_leng',
'shape_area': 'shape_area',
'geom': 'MULTIPOLYGON',
}
adm3_name_shp = os.path. abspath(os.path.join(os.path.dirname(__file__),'testdjango/data/vnm_polbn_adm3_2014_pdc.shp'))
def run(verbose=True):
lm = LayerMapping(Adm3_names, adm3_name_shp, adm3_name_mapping, transform= False, encoding='iso-8859-1')
lm.save(strict=True,verbose=verbose)
https://docs.djangoproject.com/en/2.2/ref/contrib/gis/layermapping/
最佳答案
正如我们从注释中发现的那样,问题在于adm3_name_shp
的创建,它向路径添加了额外的testdjango
文件夹:
更改此:
adm3_name_shp = os.path.abspath(os.path.join(os.path.dirname(__file__),'testdjango/data/vnm_polbn_adm3_2014_pdc.shp'))
对此:
adm3_name_shp = os.path.abspath(os.path.join(os.path.dirname(__file__),'data/vnm_polbn_adm3_2014_pdc.shp'))
您应该考虑的另一个技巧是
os.path.abspath
在后台调用os.path.normpath
,这就是将您的路径转换为正确的操作系统路径的方法(对于Windows,使用\
;对于Linux使用/
)。通过折叠冗余分隔符和上级引用来标准化路径名,以使
A//B
,A/B/
,A/./B
和A/foo/../B
都变为A/B
。此字符串操作可能会更改包含符号链接的路径的含义。在Windows上,它将正斜杠转换为反斜杠。要规范大小写,请使用normcase()。因此,您可以将
abspath
替换为normpath
,但这是可选的。关于python - Geodjango导入具有LayerMapping和OGR的Shapefile,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/58833307/