Sjudoku - in a world where 9 is replaced by 7. #> CRS: NA

column elements to be binded into an sf object or a single list or data.frame with such columns; at least one of these columns shall be a geometry list-column of class sfc or be a list-column that can be converted into an sfc by st_as_sfc. Why are so many coders still using Vim and Emacs? Not just the limitations of no updated GDAL but also the fact that we Google so much while coding. There is likely a simpler answer that I'm overlooking. #> geometry type: POLYGON site design / logo © 2020 Stack Exchange Inc; user contributions licensed under cc by-sa.

Here's my solution thanks to @technocrat's tip about coercing the sf object. How do scientists know the min limit of temperature is -273 degree celsius? #> CRS: NA 1980s or 1990s film with robots or mechs I watched in my childhood. Powered by Discourse, best viewed with JavaScript enabled, Convert sf object to data.frame with region and order for using with geom_poloygon,, Import shapefiles using sf on my computer, Create data.frames which have group, order, region, and subregion to be used with geom_polygon. coordinate reference system, something suitable as input to st_crs. Why is a symmetric traceless tensor zero when averaged over all directions? Make a minimal and maximal 2-digit number from digits of two 3-digit numbers. land use), "aggregate" where the attribute is an aggregate value over the geometry (e.g. I agree it's not a fun environment. #> dimension: XY By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy.

I love using sf for shapefiles BUT I'm doing some work in a Census data center and need to make some maps where GDAL isn't up to date to be able to use sf. "constant" is used for attributes that are constant throughout the geometry (e.g. #> bbox: xmin: 1 ymin: 2 xmax: 1 ymax: 2 It's possible to coerce sf multipolygons to Spatial and SpatialDataFrame objects and I suppose it is possible to work through the S4 object to translate into the target format, but that's when I'd considering provisioning an EC2 instance to drop the GDAL barrier issue. Reproducible example: What would constitute a need for a high bit rate capture? 771 5 5 silver badges 12 12 bronze badges. #> 2 4 POINT (3 4), #> Simple feature collection with 2 features and 0 fields Wish I had something more useful to offer. When confronted with a data.frame-like object, st_sf will try to find a geometry column of class sfc, and otherwise try to convert list-columns when available into a geometry column, using st_as_sfc. Created on 2020-04-14 by the reprex package (v0.3.0), I figured out an answer based on paqmo's suggestion to look at Convert sequence of longitude and latitude to polygon via sf in R. The answer provided in that question groups all the points in the data frame as a single polygon. This is how I would convert it to a spatialPolygons (package sp).

#> a g Is it possible to create a SpatialPolygonsDataFrame with three dimensions? #> 1 3 POINT (1 2) #> CRS: NA

Should the points be in a different order for creating polygons in sf? How do I create multiple polygons? #> dimension: XY Convert the sf object trees to an sp object (class Spatial) with as(). What situation would prompt the world to dump the use of Atomic and Nuclear Explosives entirely? Can someone re-license my project under a different license. #> CRS: NA

I won't be able to use sf in that environment so need an object like the one that comes from using map_data with the group and order not a sf list-column. #> geometry type: POINT your coworkers to find and share information.

See demo(nc) for a worked example of this. Features are represented by records in an sf object, and have feature attributes (all non-geometry fields) and feature geometry. This is somewhat convoluted since your points are not in the right order to create a polygon, but it works. #> CRS: NA I was trying to convert an sf object to its sp equivalent in order to use maptools::snapPointsToLines, and saw that as_Spatial currently only works with converting … [.sf will return a data.frame or vector if the geometry column (of class sfc) is dropped (drop=TRUE), an sfc object if only the geometry column is selected, and otherwise return an sf object; see also [.data.frame; for [.sf ... arguments are passed to op.

Sorry I wasn't clear that I can first use a computer with sf but then need to somehow go from geometry to the group, order, region and subregion for use with geom_polygon. library(sf) centres<- This new 'centres' dataframe has the lat&long values, but misses the ID column.

Created on 2019-11-11 by the reprex package (v0.3.0), It hurts me to think of the environment that forces upon you such an ugly workaround! #> geometry type: POINT Updating GDAL isn't an option so I want to do the following: Created on 2019-11-10 by the reprex package (v0.3.0), I'm guessing I don't understand the question properly, because I don't understand why the following doesn't work. #> geometry type: POINT Since sf objects are a subclass of data.frame or tbl_df, operations on feature attributes work identical to how they work on data.frames, e.g.[,"some column name"])[,1] share | improve this answer | follow | answered Jul 13 at 10:12. joaoal joaoal. How to convert feature_easting and feature_northing into longitude and latitude in R?

Convert sequence of longitude and latitude to polygon via sf in R, library(sfheaders) lets you construct an sf object from a data.frame directly.

#> geometry type: POINT logical, default FALSE; if TRUE drop the geometry column and return a data.frame, else make the geometry sticky and return a sf object. #> geometry type: POINT #> Simple feature collection with 1 feature and 1 field My points are in the correct order for creating a polygon using sp. #> CRS: NA #> r pol #> a st_sfc.st_point.1.2.. Thanks for contributing an answer to Stack Overflow! dput for the dataframe … Would the Millennium Falcon have been carried along on the hyperspace jump if it stayed attached to the Star Destroyer? I was confused by "Import shapefiles using sf on my computer" into thinking you could. Thanks, I'll look into coercing the objects. Making statements based on opinion; back them up with references or personal experience. I tried several things but the result is not sf dataframe and the geometry cells are be in a list format.


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