An R package to calculate the distances and related measures for angular (longitude/latitude) locations
Questions tagged [geosphere]
170 questions
0
votes
1 answer
Using sp (spatial package) from my own package results in error: could not find function
I'm developing my first package - well, actually I'm packaging some existing code - in RStudio. I've marked up all the comments with roxygen2 and this has generated a correct NAMESPACE file which…
Michael Henry
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1 answer
Still getting "Wrong length for a vector, should be 2" error even if using rowwise()
I'm trying to add a "distance" column to a huge (near 6 million rows) dataframe with coordinate information as start_lng, start_lat, end_lng, end_lat columns.
I have tried the following:
trips$distance <- distm(c(trips$start_lng, trips$start_lat),…
bsiq
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1 answer
R: divide a given Box into X amount of new boxes with given diagonal
I have a Bbox of Germany with coordinates (lon,lat):
g_bbox<-c(xmin=5.98865807458, ymin=47.3024876979, xmax=15.0169958839, ymax=54.983104153)
I would like to divide the bbox in (x) amount of bboxes with a diagonal of 50 km each.
The length of…
Andreas
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1 answer
I have 2 dataframes with latitude and longitude in each. I want to find the 5 nearest points from df2 for each point in df1
I tried a row by row approach, like this:
library(geosphere)
best <- 1000000
for ( var1 in df1 )
{ findpoint <- c(df1$longitude[var1], df1$latitude[var1])
for ( var2 in df2 )
{ basepoint <- c(df2$longitude[var2],…
MarkBeauchene
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- 4
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votes
2 answers
Getting centre of multiple coordinates in R
I have a data frame with 'lat', 'lon' values such as:
index lat lon
------- ----------- -----------
1 51.513393 -0.115650
2 51.513428 -0.115461
3 51.513428 -0.115462
4 51.513428 …
Falco
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