Python list of coordinates For ex. from_iterable(interior. Does anyone know the correct or a more efficient way of doing this? import numpy as np # Please note that we have no control over the point class. ) or += to add an iterable of elements (the rows): import numpy as np coord = [(637, 257 Just assign directly to those two index pairs, indexing from the outer list to the inner (the last list is 2, the middle list is 1), so the first element of the last list is at [2][0]: outerlist[1][0], outerlist[2][0] = outerlist[2][0], 0 This assigns two values (one taken from outerlist[0][2], the other the literal 0 integer) to the two positions in the nested lists. 1439, 17. The first coordinate pair matches one Within a list, there are coordinates with x and y values. So, for example, if I have x = 5 and y = 12, I would get ['2e', 'sp2', '5', '12'] . 57], [48. Given a geographic coordinate pair, how can one efficiently determine which airport I am stood in? Inputs A coordinate pair (x,y) representing the location I am stood at. But the coordinates are a 2d array (an array where each row is a coordinate, so an n× 2 array). I've thought about creating a start point and finding whether there exists a path that doesn't repeat points (ie (1,1) -> (2, 1) -> (1,1) disallowed) and could get back to the start point; however, if the start point is in an offshoot of I have a list of pairs where the list resembles li = [(a,b), (c,d), , (t, u)]. Therefore, shapely. 43686', '39. grid array values to 1 at those points. For any xy coordinate present in the list, have a 1 in the corresponding index I want to extract coordinates of given indices of points in a form of array-like structure. norm(A-leftbottom, axis=1) is calculating a matrix norm, not a vector norm. 3123], [x. So if we a list of coordinates such as [(0, 0), (4, 4), (4, 4), (1, 1 . Like so: 1: (1,1) 2: (1,3) In between: (1,2) Or 1: (1, And if the problem is vaguely interesting and I have a few spare minutes, I might Yes, there are several properties you can harness to get this done. 9972973,40. the (x,y) coordinates corresponding to each value (0,0) (0,1) (0,2) I've got a list of 8 coordinates stored as list of lists: coordinates = [[47. 31) is reached again (i. Maybe you know but the angle between two (normalized) vectors is acos(vec1 * vec2). 2486, -1. When I execute my co Your problem is in the lines turtle. After a few hours You can pass a list of coordinates, but you should transpose the list. Iteration of a 2d list in Python, distance between two locations 8 How to iterate through a list of coordinates and calculate 1 One simple method that you could use is k-means clustering. I use a list because the results of this processing will generate an ordered Python, two dimensional list and coordinates 3 Python: List comprehension into an x,y list 1 Iterate through 2d list and select range from co-ordinates in Python 2 getting (x,y) coordinates from a list of lists 1 Python - list comprehension , 2D list 2 Double list 4 0 With a bit of trigonometry it's not that hard. 47417], [48. geometry. exterior. values site_lon = df[' Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers I have a list of coordinates, and I need to split them in half based on their x value. Related questions are here and here. 7075148', , '-73. There's only one problem, in my dataframe I must partition these calculations to the field I have two functions where the first generates a random list of coordinates. I also have a list with different coordinates (a y and x index) and I want to change the corresponding coordinate in the 2D list, and I want to do this for all the coordinates. 3592, -4. A set of coordinate pairs [(a1,b1), (a2,b2)] where each coordinate pair represents one airport. ie [[23. 9850235,40. item1 to item2 then item2 to item3 and so on. ['22. I'm still a bit new to python, but I would try : training_data_x =[] for i in training_data: training_data_x. Current list structure: [(((long1, lat1), (long2, lat2)), 'attribute1', attribute2),)))] So an example would With this, I make a list from all the X-Coordinates and all the Y-Coordiantes from each subject. e closing the geometry) a new list is created with the coordinates up to and including that point? This would separate out all the coordinates associated with Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand You don't want to do this with a list comprehension. 467378}, {'lat': 46. 000) from an text file. First, those are Python lists which roughly correspond to ArrayLists in other programming languages. 34479, 124. I'm a Python begginer and I'm trying to calculate the distance between sequential items. Using Python 3, I would like to find a smallest set of clusters (disjoint subsets of P) such that every member of a cluster is within 20km of every other member in the cluster. Matplotlib is a powerful library that allows you to create a wide variety of plots, including scatter plots, line plots, and more complex visualizations using lists Convert list of coordinates to LineString within a dataframe Ask Question Asked 4 years, 9 months ago Modified 4 years, 9 months ago Viewed 5k times 3 I have a dataframe where one of the columns contains a list of x and y points and I would like to I have two separate lists, one that displays the latitude and one that displays the longitude of several sites that go together to make coordinates. 98795, 74. interiors) I have been trying to find the two closest points/coordinates/tuples from a list of tuples. location1 = [[1], [2], [3]] location2 = [[4], [5], [6]] location3 = list(map(lambda coord: [coord[0][0],coord[1 Given a pair of coordinates (x,y), I want to find the element in the list (which will be itself a list) corresponding to said pair of coordinates. First, of course, is that a rectangle has exactly four vertices; your second list should be rejected on those grounds alone. For instance, if the input list to function nearest_neighbor() is like below: [(1, 2), (4, 5), (5, 5), (4 As @Frank Yellin pointed out, the line distances = np. coords[:-1] for interior in polygon. [(7, 9), (3, 3), (6, 0), (7, 9)] I can calculate the distance between two points. LineString. I have a list of tuples containing x,y coordinate pairs. That's, the first (lat, long) must also be at the end of the string like: as list comprehension perhaps like this def border(x,y): return [ (a,b) for a in range(x+1) for b in range(y+1) if 0 in (a,b) or x==a or y==b ] But I rather produce directly what I need instead of searching for some esoteric and/or potentially inefficient way of doing it, is I have to extract all elements of array with the given list of coordinates and insert into 2*298808 as position given in while loop How can I compress the code even more? def arr_func(arr, I recently started learning programing and Python. ndindex) -- and sets the self. Is there a possibiity to maniupulate/filter the list, so that there are only coordinates which Suppose we have an n-dimensional numpy. array B with dtype=int and shape of (n, m) How do I index A by B so that the result is an array of shape (m,), with values taken from the Performance-concerns. All the coordinates are in brackets as above, and the format is exactly the same for the rest of the string (the list is in string format). I now see that you're simply assuming that they're always pointed to from (0, 0). I just need to generate a list of pixel locations to process in an image. linestring. I have a 'mask' (boolean) 2D array and I would like to transform it into a list of coordinates. extend(. You can use . Here is the basic code: Looks like you just have a list of tuples. x list tuples or ask your own question. I think this solution is good. trips = [{data_1}, {data I want to define a function that will transform any given list of lists into the following format where there is 1. I'm trying to covert a list of coordinates to a list of tuples: from: a_list = ['56,78','72,67','55,66'] to: list_of_tuples = [(56,78),(72,67),(55,66)] I've tried doing a for, in loop to convert each element in a_list to a tuple however the output is You need to show both variables location1 and location 2. 59672],[-3. Learning how to plot list of X Y coordinates in Matplotlib is a fundamental skill for data visualization in Python. The same applies to Y I have a list of points P=[p1,pN] where pi=(latitudeI,longitudeI). (There is some explicit looping, so maybe a more X, Y and Z are the three coordinates of a cuboid. . John1024's solution is more pythonic than explicit for loops. I want to be able to do something like for prop in region: img[prop I have a long string of coordinates divided by commas. Since we wish to preserve order, as well as allow duplicates that are not next to each other, we cannot use a simple set. For every point P in your list, calculate the oriented angle alpha_P between the x-axis and vector CP. If X=2, the possible values of Xi can be 0, 1 and 2. I then make a list pertaining to each time point, which is each row of data. [([-37. I have to generate a list of all possible coordinates on a 3D grid where the sum of Xi + Yi + Zi is not equal to N. setpos(selected_map[0][0]) which you should replace for turtle. I want to list all the coordinates between two points. I have a list of tuples, where each tuple consists of 3D coordinates. 034822, 'lng': 14. One common task in data analysis is plotting a list of (x, y) coordinates to visualize patterns and relationships in Given a list of points I would like to create a numpy array with coordinates. However, when trying to plot an arrow where the first list holds the the y and the second list holds the x coordinate for four different points. 71467,40. I'm not dealing with inner rings in this situation and instead, only dealing with separate polygons that are part of the same feature. append(i[0]) another way you could do is create a function that takes tuple and returns the x. This comprehensive guide has covered a wide range of plot types and customization options, from simple By using the plot() function, we can easily plot a list of (x, y) coordinates. Distance between two. If you know that there are k=2 groups of points, then this method should work very well, assuming your clusters of points are reasonably well separated (and even if they have holes). Install using pip pip install gpx_converter then use it by calling the csv_to_gpx in your case: from gpx_converter import Converter Right now I have a list of coordinates that are in the following format: (1,12),(2,3),(3,9). g. Essentially, I'm trying to export Polygons from a GeoJSON format in Python to MultiPolygons. e. How to Plot List of X Y Coordinates in Matplotlib How to Plot List of X Y Coordinates in Matplotlib is an essential skill for data visualization in Python. # This List coordinates between a set of coordinates python line coordinates maze Share Improve this question Follow edited May 23, 2017 at 12:00 Community Bot 1 1 1 silver badge asked May 29, 2014 at 9:39 I would like to calculate the shortest path between a list of destinations and an origin. This should be fairly easy, but I'm getting a headache from trying to figure it out. List 1 is in the form: (reference number, x This works 0(n^2) but it is very easy to read and understand. After creating such a list it cannot be directly passed to plot, first a transpose needs to taken to get x and y coordinates. apply(lambda geom: list(geom. 6131375], [172. setpos(selected_map[0]) because you want the list (pair) [x,y] and not only the x value. 3051281]), ([-38. 71977,40. , Creating coordinates for polygon using Python lists 1 Python - Check if Shapely Polygon is a rectangle 0 Create a square Polygon from lower left 0 The question was asked years ago, so if you are searching for this recently and you are using python >= 3. 93828736155422]), ([-43. A parallelogram has It might seem a bit odd that I am asking for python code to calculate the area of a polygon with a list of (x,y) coordinates given that there have been solutions offered in stackoverflow in the past. The Overflow Blog From bugs to performance to perfection: pushing code quality in mobile apps “You don’t want to be that person”: What security teams need to understand I want to create a function that when given this list of coordinates/points finds whether there exists a complete path in this set of points. w, h from collections import defaultdict from math import sqrt # Shortest path to all coordinates from any node # Coordinates must be provided as a list containing lists of # x/y pairs. Final solution will be depends on it. shape = (1000,1000). I am looking for a way to retrieve lists of coordinates from contours generated by OpenCV. However, I have found that all the solutions provided are sensitive to the order of the list of (x,y) coordinates given. But first, you have to have closed coordinates. Updated following the comments below. coords)) Assign the left part of the coordinate to a key, and the right part to another key (Here it is 1st and 3rd to one key and 2nd and 4th to another key), in the Python list or Python The way I interpret sorting a set of coordinates counter-clockwise is such that, when pointed to from the center point, the vectors to those ordered points rotate counter-clockwise. However this calculates only the projected angle but one could use atan2 to calculate the Is it possible to split this list such that when the first value (0, -0. Be With L1 a list of lists of floats with shape 1'000'000×3, and for 10 runs, we get as benchmarks: >>> timeit(f, number=10) 5. 53541'] What is the easiest way to convert this string into a list of coordinates Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers I want to import several coordinates (could add up to 20. Then map the function to Just add in commas between the tuples and you can safely evaluate the string into a tuple of tuples: import ast def get_coords(): print "Enter a list of points. Thanks!:) – aemdy I have a long list of xy coordinates like the following: >>> data = [(x1,y1),(x2,y2),(x3,y3),] Every pair of coordinates represents a point of a contour in an image and I would like to sort them like they are arranged along python python-3. 5936', '55. By a list of columns, I mean each column is represented as its own list, with elements being coordinates of the elements in the Convert nested list of coordinates to Shapely polygons Ask Question Asked 3 years, 5 months ago Modified 3 years, 5 months ago Viewed 6k times 3 I have a dataset like this: Area Co-ordinates 01 [[-3. I'm just switching to Python from C++ so want to learn to do things "pythonically". 468441}] However, I have input data in Analysts often need to display each point’s coordinates directly on the plot for better data comprehension. I'd like to make two lists of the different X and Y coordinates in the original list: I am trying to generate a txt file that has lat, long, i, j, z values. ndarray and of dimensions (200,2). 2321, 58. Plotting a List of (x, y) Coordinates in Matplotlib in Python 3 Matplotlib is a powerful library in Python for creating visualizations and plots. Second you but Python get certain coordinate from list 0 Getting Coordinates from Given Lists 0 Use corner coordinates to create a tuple of all inner coordinates 2 Double list comprehension in Python - finding borders coordinates 0 How to detect the specific coordinate points 0 How to find coordinates from a list of addresses in a dataframe Ask Question Asked 4 years, 4 months ago Modified 4 years, 4 months ago Viewed 632 times 2 I am trying to create 2 columns in my dataframe for Longitude and Latitude which I want to find In general, when the polygons can contain holes, we could, for example, write the following function to extract coordinates from the interior rings: def to_coords(multipolygon): for polygon in multipolygon: yield from polygon. We can also customize the style of the plot by specifying parameters such as color, linestyle, and marker. For example: coordinates = [(2,4),(2,0)] and I need to return Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers Suppose I have a n x n grid, and I want a function that generates a list of all columns and rows by taking n as the input, in python. Hello i have the following problem. 5, you can use gpx_converter. loads method helps you. Use xrange and itertools. trips is a list element containing dictionaries of key-value pairs of information about a trip (duration, distance, start and stop coordinates and so forth) and the positions object inside trips is a list of tuple coordinates as visualized above. Working with large data sets is faster in numpy than using the iteration in Python suggested in other answers. I wish to transform the list to a matrix, with xy coordinates representing indices of the matrix using numpy and without using a loop. 036733, 'lng': 14. wkt. 7900946'] (Imagine the as a lot more coordinates similar to the fir Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers I have a geopandas Dataframe with one GeoSeries. To generate the coordinate pairs from a grid is straight forward, but I'm stuck at how to iterate the 20 x 20 chunks in an array. :-) Otherwise, you can check the slopes of the sides. Another way is zip(range(0, 31, 10), range(0, 21, 20)), which also return the list of coordinates. literal I would like to generate a list of coordinate pairs for every 20 x 20 chunks until the end of the array. What I need is that given a set of coordinates add "1" in these coordinates until the list of the shortest path changes Deepcopy Python List Share Improve this answer Follow answered Jul 4, 2020 at 20:06 Gambit1614 Gambit1614 8,781 1 28 Add a comment Input data you have is probably a string(?) and it is almost in WKT (Well-known Text) format. 256122357001004 We thus can rotate 1'000'000 points on average in 525 milliseconds (this includes converting L1 and R1 to numpy arrays), or approximately 0. The list was populated from my email so the structure can be modified if need be. I'd like to obtain a list: A couple things. ). array A a numpy. There is only one entry for this column, a shapely. I am getting the list of destinations from OSMNX function for a set of Points of Interests (geometries_from_place). They are really close together. But first I need to find the nodes closest to my destinations. Use pyplot to apply the logarithmic scale rather than operating directly Python: Filter List of Coordinates 0 Is there a way to filter coordinates in an array 0 How to extract lines that are within radius of cartesian coordinates 3 Filtering coordinates based on distance from a point 0 Filtering Data outside of a range using python shell 3 0 I have a list with two sets of coordinates and two attributes associated with them. The x I'm reading in a list of coordinates from a kml file giving me this output: ['-73. Approach If someone could please help me out in a method to exact the coordinates into a list of coordinates for each polygon so that I can loop through a list of polygons with each containing a list of their coordinates, that would be greatly apprcieated! My initial error I have two sets of data taken from two separate import files which are both being imported into python and have currently been placed in lists as follows. 26964, 124. I want to index a image matrix (also an ndarray) of dim img. Something like this: Split Python list into several lists based on index 0 Create a coordinate pair from this code 1 How to split list of (X,Y) coordinates of path into separate list of Well, I've just done some testing and got the following: creating a generator by list comprehension without [] is the fastest way, but if we are looping through the data afterwards then your method is much faster. k-means partitions a list of observations into k clusters, where each point belongs to the cluster with the nearest mean. site_lat = df['SITE_LAT']. xxx, y. Every coordinate is at another time step. the value and 2. 9503756], [176. 59092],[-3. result where the first column is an ID, the second is the X coordinate, the third the Y coordinate and the fourth the Z coordinate. e Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand @DanielHao This is what it looks like: The coordinates First lets take care of eliminating duplicate subsequent entries in the list. Now X=1,Y=1, Z=1 and N=2. For example, if I have an OpenCV contour: cnt = [[[272 271]] [[271 272]] [[270. izip if you have a significant number of tile coordinates you don't want to store in I have a list of pairs (a, b) that I would like to plot with matplotlib in python as actual x-y coordinates. Featured on Meta We’re (finally!) going to the cloud! More network sites to see advertising test [updated with phase 2] Linked 1 Convert Point Geometry to list Related 3 Creating Points from Coordinate-Tuple The Problem Imagine I am stood in an airport. 5μs per vector. 54806], [43. 1097], Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers Advertising Output: Method 3: List of lists Creating lists of list of all points to be plotted can also one of the ways of achieving our requirement. Such that the items of the i-th dimension are passed as the i-th element in the indexing, for example with: A[tuple(np. yyy]] def distance_between_coords(x1, y1, x2, y2 Here is a solution which calculates an array of squared distances from the centre point and then gets the indices of the closest n points -- by sorting a list of (squared_distance, indices) tuples where indices is itself a tuple of indices (as returned by np. For example (0,0), (0,1), (1,1), (1,0)" points = raw_input() while True: try: return ast. Well by appending, you add a single element to the list. I have a python script that generates a list of coordinates in the following format. What's the proper numpythonic way to do that ? The input would be something like this: [[False,False,True], [False,True,False]] and given the above input, the output should I'm trying to write a Python function (without the use of modules) that will iterate through a list of coordinates and find the euclidean distance between two subsequent points (for example, the distance between points a and b, b and c, c and d etc. {'lat': 46. With Matplotlib, we can create informative and visually I received a code, that expects a list of coordinates such as this as input. case 1: Both variables are list of list then below solution is for you. Now I've been trying to convert a list of coordinates x,y to latitude and longitude. I need to write def middle_point(coordinates), and each time I will be given list of coordinates (tuples) and it should return a tuple. Currently, it is making two plots, where the index of the Discover effective methods to plot x-y coordinates from a list using Matplotlib in Python with practical examples and alternatives. 70497,40. . For example: def extract_points(df, indices): ''' Takes dataframe and indices of points returns list of coordinates of points ''' extract_points(example_dataset, [1,2 I'd like some help with a task. I have been able to create a list of i,j, z values using the following: n = 51 m = 31 data = [(i,j,i*2) for i in range(n) for j in range(m)] However, I am not sure how to do this if I create a range of values using Python: Converting list of xy coordinates into an adjacency list Ask Question Asked 5 years ago Modified 5 years ago Viewed 2k times 3 I have a list of tuples representing xy coordinates i. , take the average of the coordinates in your list). These coordinates need to be added into a list, looking like the follwing: coords = I have a 2D list with placeholder variables to form a coordinate system. Basically the output from regionprops. linalg. coords[:-1] yield from chain. From that I can plot a scatter and annotations. I am attempting to index into the y-coordinates of each tuple to count how many tuples have a y-coordinate of 0, 1 You may well have heard of something called the zen of python, and something called pythonic code - enumerate is considered far more pythonic - firstly it is gives I have coordinates of class numpy. I'm new to numpy and arrays. A simple choice for C is to take the barycentre of your list of points (i. I searched and found a method in python in this post: How to When you're reading in your input file you're assigning all of the first column to a variable, and all of the second column to a variable: python geopandas shapely or ask your own question. 5656, 1. The second function, I need it to iterate through the list of coordinates and draw each coordinate. 1272259], [177. transpose(B))] For a 4×4×4 matrix: In python I have a list of contours (each holding x, y, w, and h integers), I need to somehow iterate over the list and check, if the current x + w is greater than the last x + w by less than 3 (which mean by 1 or 2) remove the current one, otherwise keep going. LineString (first_lon first_lat, second_lon second_lat, ) I could not find an easy way to get the coordinates of this LineString as a DataFrame like Use numpy to create the x-coordinate list and y-coordinate list. I have a list of coordinates where every 5 consecutive coordinates define the coordinates of a rectangle, e. 1307049])] I wan Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers Thanks. For instance, given a list of (x, y) points, the desired output is a scatter You can use this one-liner if you are happy with a list of tuples instead of a list of lists: df['coords'] = df.
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