in python sort and group by common elements in a list Question: I will try to express myself clearly. Would anyone know how to order elements with common values in a list? I made a drawing to explain it better. I have a list with several letters and their two number. ev=((‘A’,(1,2)), (‘M’,(0,40)),(‘S’,(17,32)),(‘Z’,(2,7)),(‘K’,(7,12)),(‘U’,(40,18)),(‘R’,(32,5)),(‘V’,(28,47)),(‘X’,(5,28))) and after …
Find connected components recursively in a data frame Question: Consider the following data frame: import numpy as np import pandas as pd df = pd.DataFrame( { "main": [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10], "component": [ [1, 2], [np.nan], [3, 8], [np.nan], [1, 5, 6], [np.nan], [7], [np.nan], [9, 10], [np.nan], …
How to apply Connected Component Analysis left to right order in openCV Question: i am using connected component analysis to recognize characters from the image. for that i am using cv2.connectedComponentsWithStats() function. As the output it is getting the characters but without a order. num_labels, labels, stats, centroids = cv2.connectedComponentsWithStats(img, 8, cv2.CV_32S) after getting the …
How to get region properties from image that is already labeled in OpenCV? Question: I am labeling images using the watershed algorithm in OpenCV (similar to this tutorial: https://docs.opencv.org/3.4/d3/db4/tutorial_py_watershed.html) such that at the end I obtain an array of labels where each region has an integer value corresponding to its label. Now, I want to …
Merge lists that share common elements Question: My input is a list of lists. Some of them share common elements, eg. L = [[‘a’,’b’,’c’],[‘b’,’d’,’e’],[‘k’],[‘o’,’p’],[‘e’,’f’],[‘p’,’a’],[‘d’,’g’]] I need to merge all lists, that share a common element, and repeat this procedure as long as there are no more lists with the same item. I thought about using …
