How to improve performance – Merge two dataframes by closest geodetic distance Question: I have two dataframes, one radar which represents data on an equispaced grid with columns for longitude, latitude and height value, and one ice that has some information related to satellite observations, including the latitude and longitude of the observation. I want …
How to distance between all points in list? Question: I am plotting random points on a graph. I want to find the Eucildean distance from every point to another in a list. Previous result/attempt can be viewed here I generate 4 random numbers between 0 and 10 for the x and y coordinates, and then …
Calculating smallest within trio distance Question: I have a pandas dataframe similar to the one below: Output var1 var2 var3 1 0.487981 0.297929 0.214090 1 0.945660 0.031666 0.022674 2 0.119845 0.828661 0.051495 2 0.095186 0.852232 0.052582 3 0.059520 0.053307 0.887173 3 0.091049 0.342226 0.566725 3 0.119295 0.414376 0.466329 … … … … … Basically, I …
Construction Toy : find the x-coordinate of rightmost point of chained triangles using Python Question: There is a programming challenge to which I would like to submit a solution using Python as programming language. The challenge is to calculate the maximum distance from a wall of corner points of chained triangles formed from a set …
K-nearest points from two dataframes with GeoPandas Question: GeoPandas uses shapely under the hood. To get the nearest neighbor I saw the use of nearest_points from shapely. However, this approach does not include k-nearest points. I needed to compute distances to nearest points from to GeoDataFrames and insert the distance into the GeoDataFrame containing the …
numpy python: vectorize distance function to calculate pairwise distance of 2 matrix with a dimension of (m, 3) Question: I have two numpy arrays A and B. Shape of A is (m,3) and shape of B is (n, 3). Those matrix look like this: A #output array([[ 9.227, -4.698, -95.607], [ 10.294, -4.659, -94.606], [ …
geodesic distance on 3d triangular mesh using scikit-fmm or gdist Question: I’m trying to evaluate a geodesic distance matrix on the TOSCA dataset. e.g. the following 3d mesh- I’ve tried using two python implementations. The first one is the scikit-fmm, which does not seems to work on 3d structures at all (am I right?) hence …
Distance Matrix between rows of a Pandas Dataframe with Lat and Lon Question: I have a Pandas DataFrame with the coordinates of different cell towers where one column is the Latitude and another column is the Longitude like this: Tower_Id Latitude Longitude 0. a1 x1 y1 1. a2 x2 y2 2. a3 x3 y3 and …
Fastest code to calculate distance between points in numpy array with cyclic (periodic) boundary conditions Question: I know how to calculate the Euclidean distance between points in an array using scipy.spatial.distance.cdist Similar to answers to this question: Calculate Distances Between One Point in Matrix From All Other Points However, I would like to make the …
Calculate distance between 2 points in google maps using python Question: I get longitude and latitude using gmail geocode function. Now i need to calculate distance between 2 points. I found Haversine formula and it works well, but then in google js api i found method computeDistanceBetween(lat,lng) in the Geometry Library. My question is there …
