问题
wmap <- readOGR(dsn="~/R/funwithR/data/ne_110m_land", layer="ne_110m_land")
This code is not loading the shape file and error is generated as
Error in ogrInfo(dsn = dsn, layer = layer, encoding = encoding, use_iconv = use_iconv, :
Cannot open file
I am sure that the directory is correct one. At the end / is also not there and layer name is also correct.
Inside the ne_110m_land directory files I have are:
ne_110m_land.dbf
ne_110m_land.prj
ne_110m_land.shp
ne_110m_land.shx
ne_110m_land.VERSION.txt
ne_110m_land.README.html
回答1:
You could have shown that you have the right path with:
list.files('~/R/funwithR/data/ne_110m_land', pattern='\\.shp$')
file.exists('~/R/funwithR/data/ne_110m_land/ne_110m_land.shp')
perhaps try:
readOGR(dsn=path.expand("~/R/funwithR/data/ne_110m_land"), layer="ne_110m_land")
or a simpler alternative that is wrapped around that:
library(raster)
s <- shapefile("~/R/funwithR/data/ne_110m_land/ne_110m_land.shp")
回答2:
For me, the command returned the Cannot open layer error when I included the dsn and layer tags.
So when I included it all just as
readOGR('~/R/funwithR/data/ne_110m_land/ne_110m_land.shp')
it worked.
Note that my file was a gjson, so I've only seen this with
readOGR('~/R/funwithR/data/ne_110m_land/ne_110m_land.gjson')
回答3:
Here's what worked for me (with a real example)
require(rgdal)
shape <- readOGR(dsn = "1259030001_ste11aaust_shape/STE11aAust.shp", layer = "STE11aAust")
The exact data is available here (download the .zip file called 'State and Territory ASGC Ed 2011 Digital Boundaries in MapInfo Interchange Format')
回答4:
As I commented in other post (Error when opening shapefile), using file.choose() and selecting manually will help in the case one file selection is needed. Apparently is related with NaturalEarth shapefiles
回答5:
I had the same error. To read in a shapefile, you need to have three files in your folder: the .shp, .dbf and .shx files.
来源：https://stackoverflow.com/questions/30561889/readogr-cannot-open-file