geodist | Ultra lightweight , ultra fast calculation of geo distances
kandi X-RAY | geodist Summary
kandi X-RAY | geodist Summary
blah An ultra-lightweight, zero-dependency package for very fast calculation of geodesic distances. Main eponymous function, geodist(), accepts only one or two primary arguments, which must be rectangular objects with unambiguously labelled longitude and latitude columns (that is, some variant of lon/lat, or x/y).
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Community Discussions
Trending Discussions on geodist
QUESTION
I am working with a latitute/longitude coordinate dataset. I have created a globe in d3 to create marker points for each long/lat coord. I have succesfully been able to rotate the globe but the marker points do not rotate and I am not sure how to append them to the rotation?
Thank you
Here is my code below:
...ANSWER
Answered 2022-Mar-30 at 16:19On mouse move you update your path:
QUESTION
I have this tuple
...ANSWER
Answered 2021-Dec-23 at 20:18You can loop through your tuple and use builtin isinstance() function of python for this:
QUESTION
I want to calculate the distance between lat1, lon1 and a reference point (52.92343, 5.04127). I want to this for every row in my dataset, so the distance will be calculated with the reference in every row. That means I will create a new column with the distance in km. I can imagine you will have to use some kind of loop function, but so far I have not figured out how to accomplish this. I think I will have to use the packages geodist or geosphere, but unfortunately was not successful. How can I calculate these distances?
ANSWER
Answered 2021-Dec-01 at 17:34No need to loop, you can just calculate the distance between entries in an array of coordinates in x and a single point in y using geodist. Just passing in the coordinates as lon/lat explicitly and saving back as a numeric vector to Distance rather than as the original matrix output.
QUESTION
I am trying to write a value from the list named "data" to firestore, the list has two elements with two values, mileage and geodistance. Currently firestore is writing both the mileage and the geodistance to firestore when in reality I only need the mileage written to firestore. Currently I'm using final mileager = data.elementAt(0); to get the element into firestore but it's uploading everything in the element when I want only a single value from the element. How do I get just a single value from this list and write it to firestore? Basically I am using geolocator to see which point is closest, then I want to write the "mileage" of that point to firestore. The photo below shows how the mileage is currently being written. This is close but I want it as only a single field and value, not as a map.
...ANSWER
Answered 2021-Aug-03 at 16:23Change it to this:
QUESTION
I am just starting with R/Shiny. In this exercise, I am trying to calculate distance from the clicked point on a leaflet map to other points in a data frame. The final output I need to get is distance from the clicked point to each of the lat-long pairs in the sample_points data frame. I am able to get reactive lat-long values of the clicked point, but not the distance measurement. Please see the below app.R code. Any suggestions are appreciated.
...ANSWER
Answered 2021-Jul-13 at 16:21In ui, you should use dataTableOutput("distance"), not renderDataTable(). That is why output$distance <- renderDataTable({...}) is not being executed.
Then in output$distance you forgot to call clicked_point as a reactive. It should be clicked_point()$Long for example. And to avoid having an error display on first load, you need to check if clicked_point already has valid values.
QUESTION
I am trying to calculate the distance from a UK post code to another UK post code for over 4,000,000 rows of data.
I have imported a csv file with 4,000,000+ rows including UK postcode into a pandas dataframe.
I have then attempted to use pgeocode https://pypi.org/project/pgeocode/ to calculate for each row the distance from the base Post code. But I am not having much success.
Updated with minimal working example
Trying to calculate distance (D) from A to B.
...ANSWER
Answered 2021-Apr-20 at 16:35query_postal_code take 2 Python lists in parameter and not Numpy arrays provided by Pandas when you use df['A']. You should use to_list to convert the Numpy array into list so that the code works.
QUESTION
I try to create several points around point p1 with a distance km_distance around the point. Somehow km_distance has strange beheaviour and dont work as intendend. I have a mistake somewhere.
...ANSWER
Answered 2021-Mar-11 at 11:15an approach like this could work..
QUESTION
I am using geodist() in Solr query. Following this select?=&fl=*,_dist_:geodist()&fq={!geofilt d=30444}&indent=on&pt=50.53,-9.5722616&q=*:*&sfield=geo&spatial=true&wt=json
However, it seems like distance calculations aren’t working. Here’s an example query where the pt is several hundred kilometers away from the POLYGON. The problem that the calculated geodist is always 20015.115 .
This is my query response:
...ANSWER
Answered 2021-Jan-20 at 20:36The score=distance (or other distance-like options) is intended for indexing either points in RPT, or boxes (rectangles) with BBoxField. For that it works. If you index non-point data in RPT, the results will be erroneous and geodist gonna return always 20015.115
The best quick solution is to add another field having a location type and perform distance calculation via geodist, for example:
QUESTION
I have the following query - which works fine (this might not be the actual query):
...ANSWER
Answered 2020-Dec-01 at 12:23One way to achieve what you want is to keep the query part as you have it now (so you still get the hits you need) and add an aggregation part in order to get the closest document with an additional condition on filed_name. The aggregation part would be made of:
- a
filteraggregation to only consider the documents withfield_name = 1 - a
geo_distanceaggregation with a very small distance - a
top_hitsaggregation to return the document with the closest distance
The aggregation part would look like this:
QUESTION
I'm a D3 beginner and I want to use this d3 element into my Vue.js component. The problem here is that the periodic rotation I need does not work. It starts looping errors of null on the element projection that is globally defined. It seems that the first time works but in the second one the object is no longer defined.
Here's the code:
...ANSWER
Answered 2020-Nov-30 at 21:28I solved my problem remembering that in Javascript sometimes "this" element is not always what we expect when we work inside other functions.
So what I needed to do was to save the "this" object in a variable and using that variable to do what I needed:
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