intersection

问题 I'm working on a script to find the intersection between large csv files based on the contents of only two specific columns in each file which are : Query ID and Subject ID. A set of files are pairs of Left and Right for each species , every single file looks something like this: Similarity (%) Query ID Subject ID 100.000000 BRADI5G01462.1_1 BRADI5G16060.1_36 90.000000 BRADI5G02480.1_5 NCRNA_11838_6689 100.000000 BRADI5G06067.1_8 NCRNA_32597_1525 90.000000 BRADI5G08380.1_12 NCRNA_32405_1776

问题 In this answer described how to get picture from two images so intersection (common part of them) will be coloured black — https://stackoverflow.com/a/31258083/4767232 How can I get this result not as picture but as a rect (e.g. left=100, top=50, bottom=200, right=300)? 回答1: The position of intersection can be obtained by transforming zero point by the H matrix. val p0 = MatOfPoint2f(org.opencv.core.Point(0.0, 0.0)) val result = Mat() Core.transform(p0, result, H) (and getting size of the

问题 I have a question about intersection or rather collision detection with condition. I am doing a collision detection between a bar(Image) and a ball(Image). The bar can be moved up and down upon user's response on dragging the bar. The collision detection codes are as below. public bool Intersects(Rect barRectangle, Rect blueBallRectangle) { barRectangle.Intersect(blueBallRectangle); if (barRectangle.IsEmpty) { return false; } else { return true; } } In private void OnUpdate(object sender,

问题 I need to write a Java program that finds the intersection (common elements) of an arbitrary number of lists or arrays of integers (of arbitrary length). I guess that Java Lists may have a useful method in order to achieve this, but I am taking a look at the API and can´t find it. Any hint? 回答1: You can find the common elements between two lists by copying the elements of one list into a new list, and using retainAll : List<T> commonElements = new ArrayList<>(list1); commonElements.retainAll

问题 I'm working on an efficient algorithm to "hide" all the pairs of intersecting rectangles laid out in 2D in a set of N rectangles (axis aligned). All the rectangles have the same width and height. Suppose my starting set of rectangles laid out in 2D is R={r_1,r_2,...,r_n} where r_i are all the rectangles, r_i has the boolean attribute visible . I want to find the subset S of R such that for every r_i , r_j belonging to S r_i,_r_j don't intersect. A first trivial solution is the brute force

问题 I've spent a good amount of time getting intersections working correctly between various 2D shapes (circle-circle, circle-tri, circle-rect, rect-rect - a huge thanks to those who've solved such problems from which I drew my solutions from) for a simple project and am now in the process of trying to implement an triangle-AABB intersection test. I'm a bit stuck however. I've tried searching online and thinking it through however I've been unable to get any ideas. The thing that's given me the

问题 I'm trying to script Dice's Coefficient, but I'm having a bit of a problem with the array intersection. def bigram(string) string.downcase! bgarray=[] bgstring="%"+string+"#" bgslength = bgstring.length 0.upto(bgslength-2) do |i| bgarray << bgstring[i,2] end return bgarray end def approx_string_match(teststring, refstring) test_bigram = bigram(teststring) #.uniq ref_bigram = bigram(refstring) #.uniq bigram_overlay = test_bigram & ref_bigram result = (2*bigram_overlay.length.to_f)/(test_bigram

问题 I have a path moving over time. I use Cesium.sampleTerrain to get positions elevation and drape them on the terrain. The problem is that, even if all points are on the terrain, the line connecting 2 points sometimes goes under the terrain. How can I do to drape also connecting lines on the terrain? Here is my code: var promise = Cesium.sampleTerrain(terrainProvider, 14, positions); Cesium.when(promise, function(updatedPositions) { var cartesianPositions = Cesium.Ellipsoid.WGS84

问题 The query: SELECT id_user FROM Rating Where id_movie=2 INTERSECT SELECT id_user FROM Rating Where id_movie=3 but I get: 1064 - You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'INTERSECT SELECT id_user FROM Rating Where id_movie =3 LIMIT 0, 30' at line 1 any have solution?? 回答1: Following query will do .. SELECT id_user FROM Rating Where id_movie=2 and id_user in ( SELECT id_user FROM Rating Where id_movie=3)

问题 NB This question is not a duplicate.. Other posts are looking for the intersection points and not intersection area I am trying to detect the intersection area of 3 circles in order to process it differently than the non-intersection zone. My circles look like: The intersection area here is not visible. What I could do so far is to show it by decreasing the opacity to get something like this: I am looking for a smart way to detect the intersection zone of this three circles. EDIT In case that