Chris Jochem

23 posts

Chris Jochem

Chris Jochem

@ChrisJochem

Geographer with a computer. @WorldPopProject, #rstats

Katılım Temmuz 2019
382 Takip Edilen161 Takipçiler
Chris Jochem
Chris Jochem@ChrisJochem·
Our paper looks at a way to classify and map potential settlement types from the spatial patterns of building footprints using Gaussian mixture models.
Chris Jochem tweet media
English
1
0
1
0
Chris Jochem
Chris Jochem@ChrisJochem·
@jaredlander @paleolimbot @edzerpebesma @CARTO @TimSalabim3 I wrote sfarrow when I needed it and nothing else was available. It's not meant to be competing. I'm glad there's so much interest and development around this file format now. A GDAL, geoarrow or native arrow solution will ultimately be best.
English
0
0
2
0
CARTO
CARTO@CARTO·
We are thrilled to introduce GeoParquet! A proposal to standardise how to work with #SpatialData on Parquet. Goal is to increase spatial interoperability on the Data Clouds so GEO become Cloud-Native: hubs.ly/Q016J9t70
CARTO tweet media
English
4
10
39
0
Chris Jochem
Chris Jochem@ChrisJochem·
My first #rstats 📦on CRAN! {sfarrow} Reading/writing spatial objects with coordinate reference system info from/to Parquet files and partitioned datasets #rspatial cran.r-project.org/package=sfarrow
Chris Jochem@ChrisJochem

Experimental #rstats 📦 {sfarrow} for reading/writing `sf` objects from/to Parquet files with {arrow}. Using consistent geo metadata to work with @GeoPandas. Currently quite simple; feedback and ideas welcome #rspatial github.com/wcjochem/sfarr…

English
8
12
58
0
Chris Jochem
Chris Jochem@ChrisJochem·
The package has flexibility to calculate morphology metrics on grids, in polygon zones, and using focal windows. Check out the code/docs here: wpgp.github.io/foot/ All the data and settlement classification from our paper are available! dx.doi.org/10.5258/SOTON/…
Chris Jochem tweet media
English
0
0
3
0
Chris Jochem
Chris Jochem@ChrisJochem·
The paper also presents an example of generating a gridded classification of settlements for England, Scotland, and Wales using only patterns in buildings and unsupervised clustering
Chris Jochem tweet media
English
1
0
2
0
mikefc
mikefc@coolbutuseless·
#RStats spatial: If I wanted to extract a subject of a 5GB geojson file for a particular region, what tools should I use? I want to extract manhattan building footprints from the MS NewYork building dataset. No idea on where to start! github.com/Microsoft/USBu…
English
5
1
11
0

Keşfet

@envplanb @HeatherCh100 @AndyTatem @WorldPopProject @grid3global @jaredlander @paleolimbot @CARTO