How to remove columns in a spatialpolygonsdataframe in R?

How to remove columns in a spatialpolygonsdataframe in R?

I know how to do this with a regular data frame in R, but I am unsure how to do this when dealing with object of class SpatialPolygonsDataFrame? Use the syntax object_ name [,- (1:5)] to remove columns 1 to 5 or object_name [,-c (1,5)] to drop columns 1 and 5.

How to create a spatialpointsdataframe object in R?

I have created an object of type SpatialPointsDataFrame using the sp package in R. However, I am confused about the @, $, . and [] operators and when to use them to access the different properties of my object. Here is my sample code:

How do you assign coordinates in spatialpointdataframe?

When you create the SpatialPointDataFrame, you assign x and y as coordinates names. If you look at locations@coords you can see the matrix with the coordinates. Also, if you try to create a new column in @data with the name “x”, you can’t, because its already use as coordinate name.

How to export a dataset with ” spatialpolygonsdataframe “?

You should look at the rgdal package, specifically the writeOGR function. For example, I first downloaded the 110m-resolution “States and Provinces” shapefiles from Natural Earth, unpacking them to ~/scratch/ne_110m_admin_1_states_provinces. I read them into R via: At this point, the object states is a SpatialPolygonsDataFrame.

How to convert a spatialpolygon to a…?

Obviously to add a column to a SpatialPolygon object you have to convert it to a SpatialPolygonsDataFrame, but I don’t know how. What do the “coast”, “ro” and “bc” objects have to do with your problem?

How to export a spatial dataset in R?

How to export spatial datasets in R, such as tornados dataset in GISTools package, as a shapefile with the exact same spatial reference and the exact values? “SpatialLinesDataFrame” to “shapefile”. Wesley’s answer is correct. So to specifically export the tornado data you need to do: