spatial Questions
1
Solved
I would like to plot a shape file loaded using read.shp from the fastshp package. However, the read.shp function returns a list of list and not a data.frame. I'm unsure which part of the list I nee...
1
Solved
I would like to unzip and read in a shape file from the web in R without relying on rgdal. I found the read.shp function of the fastshp package that can apparently accomplish this without rgdal ins...
3
Solved
I have a SpatialPointsDataFrame which has one attribute (let's call it z for convenience) as well as lat/long coordinates.
I want to write this out to an XYZ file (i.e. an ASCII file with three co...
4
Solved
I'm trying to find (but not draw!) contour lines for some data:
from pprint import pprint
import matplotlib.pyplot
z = [[0.350087, 0.0590954, 0.002165], [0.144522, 0.885409, 0.378515],
[0.027...
Cockburn asked 18/8, 2013 at 23:26
1
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I've got a dataset of species occurrences which I'm trying to convert into areas of occurrence by making convex hulls. I'm able to do this manually (ie. one species at a time) but I'd really love t...
0
I am modelling the distribution of bottlenose dolphins in the lagoon of a South Pacific Island. I would like to use a soap-film smoother to model the probability of dolphin presence over a 2D surfa...
4
Solved
I have two data sets, A and B, which give locations of different points in the UK as such:
A = data.frame(reference = c(C, D, E), latitude = c(55.32043, 55.59062, 55.60859), longitude = c(-2.395499...
Apps asked 16/8, 2019 at 13:39
2
We have migrated a copy of a MySql 5.7 database to MySql 8.0.11 on Amazon RDS. Where possible everything is identical. A table containing geometry data has been modified so the geometry column is r...
Matazzoni asked 17/12, 2018 at 16:45
2
Solved
I'm getting the following error:
ERROR:
SqlException: .NET Framework error during routine execution or user-defined aggregate 'geography':
System.ArgumentException: 24204: spatial reference id...
Pelorus asked 25/7, 2019 at 19:53
1
Solved
I have a world country dataset, and would like to split it on the prime meridian, and re-center the data to focus on the Pacific.
I am trying to do this using Simple Features (sf), but am coming ac...
2
Solved
I am investigating spatial autocorrelation in my data using semivariograms. My data:
Response <- c(21L, 36L, 30L, 29L, 30L, 45L, 100L, 0L, 0L, 0L, 0L, 0L, 59L,
18L, 24L, 23L, 26L, 29L, 23L, 21...
4
I'm working with the new Entity-Framework 5 using the Spatial data type DbGeography as part of my model for storing in one instance, a POINT and in another instance a POLYGON.
When setting the val...
Trumpetweed asked 12/9, 2012 at 8:10
1
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I want to read a shape file which is encoded in UTF8. It works fine when I read it using rgdal::readOGR but sf::st_read fails to get the correct Encode. Any suggestions on how to solve this?
For a...
1
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I am new in using Python so I need a help.
I have data in two DataFrame in four columns: latitude, longitude, datetime and temperature.
In the DataFrame df2 I have latitude, longitude, datetime a...
Gastrocnemius asked 3/6, 2019 at 15:6
3
Solved
I am trying to run a query (which I gleened from here) against GeoJson multipolygon data. It processes many of the spatial records but is stopping on a some.
I get the following error in the query...
Stegosaur asked 30/5, 2019 at 3:9
2
I need to write a function in Python 3 which returns an array of positions (x,y) on a rectangular field (e.g. 100x100 points) that are scattered according to a homogenous spatial Poisson process.
...
3
long-time reader, first time poster.
I'm attempting perform a gIntersection() on two very large SpatialPolygonsDataFrame objects. The first is all US Counties, the second is a 240 row x 279 column...
Find asked 4/6, 2013 at 13:11
4
Solved
I am trying to bulk insert few records in a table test from a CSV file ,
CREATE TABLE Level2_import
(wkt varchar(max),
area VARCHAR(40),
)
BULK
INSERT level2_import
FROM 'D:\test.csv'
...
Adulterine asked 8/9, 2014 at 14:17
1
Solved
Assuming I have two sf objects with the same coordinate reference system and non-overlapping area, how to correctly combine these two sf objects to create one sf objects?
Here is an example.
# Lo...
3
Solved
Use case 1:
DECLARE @Geom TABLE
(
shape geometry,
shapeType nvarchar(50)
);
INSERT INTO @Geom(shape,shapeType)
VALUES('LINESTRING(1 2, 3 4)', 'A'),
('LINESTRING(3.2 4, 7 8)', 'B');
SEL...
Candida asked 18/2, 2019 at 4:38
1
Solved
I want to plot a world map with multiple points aka combinations of latitude and longitude coordinates.
I don't want to use Mercator, therefore I re-project both, the data for the world map and my...
1
Solved
I'm trying to build a database with a spatial object using EF core 2.2, and i'm getting a problem with trying to create the database migrations. using https://learn.microsoft.com/en-us/ef/core/mode...
Lamoree asked 20/2, 2019 at 18:15
1
Solved
I am working with the Hololens in Unity and trying to map a large area (15x15x25) meters. I am able to map the whole area using the SpatialMapping prefab, but I want to do some spatial processing o...
Benzoin asked 20/1, 2019 at 17:38
5
Solved
I'm trying to make Django's SQLite3 accept spatial queries. This tutorial suggests that I add this to settings:
SPATIALITE_LIBRARY_PATH = 'mod_spatialite'
Which produces this error:
django.co...
1
I'm still somewhat new to R and the sf package...
I have two sets of multipolygon data that I am trying to analyze. My first set of polygons (fires) contains hundreds of wildfire perimeters. The s...
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