I'm creating a function that will cause a giraffe to move in a certain direction and distance (don't ask). If the user types "west" in the parameters, the turtle should move west however the dire...

I am trying to create or find a function that calculates the distance and angle between two points, the idea is that I can have two data.frames with x, y coordinates as follows: Example dataset F...

I would like to rotate a ggplot2 graph by a self-specified angle. I found how to rotate the axis text with element_text(angle = 20). I would like to do something similar with the whole plot. ...

Given unit vector (0.5, 0.5) how could I find the angle (its direction)? Is it cos(x) + sin(y)?

I'm working on a project that can calculate the angle of an elbow joint by image. The part I'm struggling on is the image processing. Currently doing this in Python using an Intel RealSense R200 (...

I'm learning to program in R with the leaflet package. I want to give an angle to the icons, and am trying it with this code: m <- leaflet() m <- addTiles(m,urlTemplate = "http://xdworld.v...

I've got a longitude and latitude and want to convert this to a quaternion and wondering how I can do this? I want to use this, because I've got an app which projects the earth on a sphere and I wa...

I imagine that this is a simple question, but I'm getting some strange results with my current code and I don't have the math background to fully understand why. My goal is simple, as stated in the...

How do I set the symbol for the angle or annuity operation in LaTeX? Specifically, this is the actuarial a angle s = (1-vs)/i.

I have rendered the svg circle using start and endAngle. It was worked fine. But when i render the complete circle(startAngle as 70 and endAngle as 70) the output is huge different(except the 0, 90...

I have the following problem: A quaternion (q1) from a motion capturing device needs to be corrected by the yaw angle (and only yaw!) from another orientation quaternion (q2) derived by a second tr...

So I am writing a game in C++, currently I am working on a 'Compass', but I am having some problems with the vector math.. Here is a little image I created to possibly help explain my question bet...

Can anybody suggest how to calculate angle between three points (lat long coordinates) A : (12.92473, 77.6183) B : (12.92512, 77.61923) C : (12.92541, 77.61985)

I have two straight lines as <path> in SVG canvas. Using pixel coordinates of LineA (A1x, A1y) (A2x, A2y) and LineB (B1x, B1y) (B2x, B2y) how can I calculate the angle between these lines. I...

I have a code that slices a numpy array into a circle. I wish to recover only the values included in a certain range of angles from the circle and mask the array. For example: mask the original arr...

I'm trying to straighten this letter but I'm not sure how to use the bounding rectangle to do so. Here's what I have so far: import cv2 import numpy as np img = cv2.imread('rtes.jpg',0) ret,t...

I have this simple function to set an angle for a vector. It effectively gets the vector's current magnitude (length), calulates the angle and converts the angle from radians to degrees. Then I app...

I need to calculate the angle in degrees between two points, with a fixed point that is connected with the given two points by a line. Here is an image that illustrates what I need: Here is wha...

I have two angles a and b, I want to calculate the absolute difference between both angles. Examples >> absDiffDeg(360,5) ans = 5 >> absDiffDeg(-5,5) ans = 10 >> absDiffDeg(5,-5)...

I'm working on a pretty cool project where I'm collecting data about the movement of a cursor, but I've run into an issue where I think I could use some help. I am constantly reading in data about ...

I have an angle and I need to return a representative angle in the range [-180:180]. I have written a function to do this but it seems such a simple process, I was wondering if there was an operat...

This is something I wasn't expecting. I know these numbers are not 100% exact, but I wasn't expecting complementary angles giving different results of sin and cos: This following function ret...

I have the situation that I have a small binary image that has one shape, around which I want to find the best fitting rotated rectangle (not bounding rectangle). I know that there is cv::minAreaRe...

I have two lines: Line1 and Line2. Each line is defined by two points (P1L1(x1, y1), P2L1(x2, y2) and P1L1(x1, y1), P2L3(x2, y3)). I want to know the inner angle defined by these two lines. For do...

OK firstly apologies as I know this kind of question has been asked before more than once. However even after looking at the other questions and answers I have been unable to get this to work for m...