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Questions - spatial

Converting the Coordinate Reference System (CRS) of a Stack of 70+ Raster Files in stack::raster () Format

Issue I have a batch of 70+ raster files with the object name 'ncin_SST' that I created using the function stack::raster() in the raster package. I want to change the coordinate reference system (CRS)...
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Alice Hobbs

r

gis

geospatial

raster

spatial

Votes: 0

Answers: 1

Latest Answer

To open a ncdf file with raster data you can simply do library(terra) x <- rast("filename.nc") if there are multiple variables per file you can select one like this x <- rast("fi...
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Robert Hijmans

Create dummy variable for all neighborhood region depending on another dummy variable (sf object)

I have a spatial dataframe (sf) of all European NUTS2 regions. Within this sf object certain regions have a dummy = 1, and others a dummy = 0. How can I create a new dummy (lets say "dummy_neighb...
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Tom

spatial

sf

dummy-variable

neighbours

Votes: 0

Answers: 1

Latest Answer

For the time being I have this work-around. But I guess there musst be an easier solution? # load packages library(sf) library(here) library(tidyverse) library(spdep) library(expp) # import nuts 2 sf...
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Tom

How can I fix orphaned holes error in ```LoCoH.a()``` home range calculation?

I am using a for loop to cycle through multiple animal's GPS data and create LoCoH.a() home ranges for each. Some are working fine while others are producing Error in rgeos::createPolygonsComment(oob...
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JLD475

r

gps

geospatial

spatial

Votes: 0

Answers: 1

Latest Answer

Not an answer, per se, but an approach for debugging troublesome for loops, just wrap in a function: source('test_collars2.R') debugonce(test_collars2) loco_tst <- test_collars2(collars = collars) ...
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Chris

Range search with KNN on two different dimensions

I've a few million records (which are updated often) with 2 properties: Timestamp Popularity score I'm looking for a data structure (maybe some metric tree?) that can do fast range search on 1 dimen...
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jeffreyveon

algorithm

data-structures

spatial

kdtree

Votes: 0

Answers: 1

Latest Answer

If you will invest the initial sorting of a list of tuples (record_name, timestamp) by the timestamp, and create a dictionary with the record name as keys and (popularity_score, timestamp_list_idx) tu...
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Tomer Geva

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