Problem
I am trying to write a DXF file of AutoCAD from the terra package. According to the documentation, this should be possible.
Load Packages
library(terra)
#;-) terra 1.7.71
Check Available Drivers
I checked the available drivers to confirm that DXF is supported:
The reason I think this is true is that if I show this data frame:
DF <- terra::gdal(drivers =T)
DF <- DF[DF$name == "DXF",]
knitr::kable(DF)
| name | type | can | vsi | long.name | |
|---|---|---|---|---|---|
| 161 | DXF | vector | read/write | TRUE | AutoCAD DXF |
The output indicates that terra should be able to read and write DXF files.
Data Preparation
Here is a minimal example where I read a shapefile and select a single column:
f <- system.file("ex/lux.shp", package="terra")
v <- vect(f)
v <- v["NAME_2"]
Attempt to Write DXF
However, when I try to write it to a DXF file, I get an error and an empty file is created:
terra::writeVector(v, "Test.DXF", filetype = "DXF", overwrite = TRUE)
#;-) Warning: DXF layer does not support arbitrary field creation, field 'NAME_2'
#;-) not created. (GDAL error 1)
#;-) Error: [writeVector] Field creation failed for: NAME_2
Here you can see that the created file is empty
terra::vect("Test.DXF")
#;-) class : SpatVector
#;-) geometry : none
#;-) dimensions : 0, 0 (geometries, attributes)
#;-) extent : 0, 0, 0, 0 (xmin, xmax, ymin, ymax)
#;-) source : Test.DXF (entities)
#;-) coord. ref. :
Session info
Standard output and standard error
✖ Install the styler package in order to use `style = TRUE`.
Session info
sessioninfo::session_info()
#;-) ─ Session info ───────────────────────────────────────────────────────────────
#;-) setting value
#;-) version R version 4.4.0 (2024-04-24)
#;-) os Ubuntu 20.04.6 LTS
#;-) system x86_64, linux-gnu
#;-) ui X11
#;-) language en_US:en
#;-) collate en_US.UTF-8
#;-) ctype en_US.UTF-8
#;-) tz Europe/Copenhagen
#;-) date 2024-05-27
#;-) pandoc 2.19.2 @ /usr/lib/rstudio/resources/app/bin/quarto/bin/tools/ (via rmarkdown)
#;-)
#;-) ─ Packages ───────────────────────────────────────────────────────────────────
#;-) package * version date (UTC) lib source
#;-) cli 3.6.2 2023-12-11 [3] CRAN (R 4.3.2)
#;-) codetools 0.2-19 2023-02-01 [4] CRAN (R 4.2.2)
#;-) digest 0.6.35 2024-03-11 [1] CRAN (R 4.4.0)
#;-) evaluate 0.23 2023-11-01 [3] CRAN (R 4.3.2)
#;-) fastmap 1.2.0 2024-05-15 [1] CRAN (R 4.4.0)
#;-) fs 1.6.4 2024-04-25 [1] CRAN (R 4.4.0)
#;-) glue 1.7.0 2024-01-09 [3] CRAN (R 4.3.2)
#;-) htmltools 0.5.8.1 2024-04-04 [1] CRAN (R 4.4.0)
#;-) knitr 1.46 2024-04-06 [1] CRAN (R 4.4.0)
#;-) lifecycle 1.0.4 2023-11-07 [3] CRAN (R 4.3.2)
#;-) Rcpp 1.0.12 2024-01-09 [1] CRAN (R 4.4.0)
#;-) reprex 2.1.0 2024-01-11 [1] CRAN (R 4.4.0)
#;-) rlang 1.1.3 2024-01-10 [3] CRAN (R 4.3.2)
#;-) rmarkdown 2.27 2024-05-17 [1] CRAN (R 4.4.0)
#;-) rstudioapi 0.16.0 2024-03-24 [1] CRAN (R 4.4.0)
#;-) sessioninfo 1.2.2 2021-12-06 [3] CRAN (R 4.1.2)
#;-) terra * 1.7-71 2024-01-31 [1] CRAN (R 4.4.0)
#;-) withr 3.0.0 2024-01-16 [3] CRAN (R 4.3.2)
#;-) xfun 0.44 2024-05-15 [1] CRAN (R 4.4.0)
#;-) yaml 2.3.8 2023-12-11 [3] CRAN (R 4.3.2)
#;-)
#;-) [1] /home/au687614/R/x86_64-pc-linux-gnu-library/4.4
#;-) [2] /usr/local/lib/R/site-library
#;-) [3] /usr/lib/R/site-library
#;-) [4] /usr/lib/R/library
#;-)
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