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approximate line segments from array of unsorted points
The polygon above is actually a collection of a lot of black points closely packed together. I want to approximate these black points as straight line segments. The black points are not sorted in any...
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Intersection of line segments induced by point sets from fixed geometry
I am reading up on algorithms and at the moment looking at the below problem from Jeff Erickson’s book Algorithms. I solved (a) by seeing a relationship to the previous problem on computing the number...
View ArticleIn determining whether any segments intersect, why there must be some sweep...
In CLRS, Section 33.1, we are given the any-segment-intersect algorithm. It’s a cool algorithm for sure but going through the correctness proof, I don’t know how to prove the following: “Given that we...
View ArticleData structure to query intersection of a line and a set of line segments
We want to pre-process a set of $ n$ line segments in $ S$ into a data structure, such that we can answer some queries: Given a query line $ l$ , report how many line segment in $ S$ dose it...
View ArticleCalculating number of intersections of a horizontal line with line segments...
I’m given an array $ A = [a_1, a_2, ….a_n] $ using which I construct $ n-1$ contiguous line segments by drawing a line from $ (i,a_i)$ to $ (i+1, a_{i+1})$ . Now, I’m given $ q$ queries in the form of...
View Articlefind the number of line segments that willl intersect that will intersect...
So,we have been given N points in a plane (numbered 1 through N) and for each valid i, the i-th point is Pi=(i,Ai) and each line segment is formed by connecting the points Pi and Pi+1. Now,we are given...
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Share segments to all collaborators in views from all properties
I have 20+ properties and I need to share the same set of 10+ segments to all the properties in a way any collaborator can see it in any view from any property. From the “Segment availability”: I know...
View ArticleDynamic length of union of segments (1d Klee’s measure problem)
Finding the length of union of segments (1-dimensional Klee’s measure problem) is a well-known algorithmic problem. Given a set of $ n$ intervals on the real line, the task is to find the length of...
View ArticleFind out if a process is legitimately allowed to use “shared memory segments”
rkhunter is checking for processes using shared memory segments and warns with output like: Warning: The following suspicious (large) shared memory segments have been found: Process: /usr/bin/python3.7...
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How to solve the ambiguity of selected state in a segmented control with just...
I’m working on a web application that has two similar data grids in a page. User should be able to switch between these two data grids within the same page. I have used segmented buttons to navigate...
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