Contents
How can I read a shapefile in R?
One of these files is a .shp file! (TM_WORLD_BORDERS_SIMPL-0.3.shp) The rgdal package offers the readOGR () function that allows to read shapefile using the following syntax. As a result you get a geospatial object ( my_spdf here) that contains all the information we need for further mapping.
How to make a map from a shapefile?
In order to read and open the shapefile, I’ll use the maptools package. This simple code already produces the following map: That wasn’t difficult at all! The shapefile includes all kinds of information. I always start to look what kind of information is included.
Which is better rgdal or maptools for shapefile?
If you want to use the ASCII file you imported, then you should simply convert the text (character) x and y fields to numbers, e.g.: Edit 2015-01-18: note that rgdal is a bit better than maptools (which I initially suggested here), primarily because it reads and writes projection information automatically.
How to read a geospatial object in R?
(TM_WORLD_BORDERS_SIMPL-0.3.shp) The rgdal package offers the readOGR () function that allows to read shapefile using the following syntax. As a result you get a geospatial object ( my_spdf here) that contains all the information we need for further mapping. Please try th following command to understand how this object works:
How to use rgdal on an ESRI shapefile?
If that looks like a hassle to you, rgdal will make it easy by reading the ESRI shapefile’s .prj file (the file that contains ESRI’s projection definition for the shapefile. To use rgdal on the same file you would simply write:
How to import a shapefile into a file?
To import shapefiles we use the sf function st_read (). st_read () requires the file path to the shapefile.
Why do I get an error opening shapefile?
However the readShapePoly () function throws an error whenever I try to load the basic shapefile. I have used the following code: I have tried omitting the file extension.