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I'm trying to merge a Large SpatialPolygonsDataFrame with a non spatial dataframe. Using packages leaflet, sp. I used read_OGR to read in the shapefiles.

I'm getting this Error "cannot get a slot ("Polygons") from an object of type "NULL"" when trying to merge.

Code:

shp.ex <- merge(shp, lookup2, by = 'Location1')

Checking lengths:

`

nrow(shp@data)
[1] 128


nrow(shp@polygons)
NULL


length(shp@data)
[1] 8


length(shp@polygons)
[1] 125

`

I'm aiming to merge the spatial data frame to a lookup so I can select the desired location. So I can then create a SharedData$new for filtering a map in crosstalk.

I've tried making sure my code is not in tidyverse format, and checking the length of the shp objects.

lilblue
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  • What if you used `sf::st_read()` to read your shapefiles instead and then continued with `dplyr::bind_cols()` or e.g. `dplyr::right_join()`? – dimfalk Oct 27 '22 at 12:02

0 Answers0