a quadratic polynomial
It is advised to use quadratic.
Questions tagged [quadratic-curve]
40 questions
8
votes
1 answer
Points on a Quadratic Curve using Processing (p5.js)
I am using this formula to calculate the points on a quadratic curve:
cPx2 = (1-t)*(1-t)* x1+2 * (1-t)*t*qcX + t*t*x2;
cPy2 = (1-t)*(1-t)* y1+2 * (1-t)*t*qcY + t*t*y2;
When I set t = 10 and iterate through the curves, I get this:
It looks like…
glaemart
- 129
- 1
- 10
3
votes
1 answer
UIBezierPath Quadratic Curve is a Straight Line
I'm trying to create a curved arrow for displaying in ab ARKit scene, however, the curvature of the arrow staff is just rendering as a straight line on both sides.
func createTurnArrow(_ direction: Direction) -> SCNShape {
let path =…
m_callens
- 6,100
- 8
- 32
- 54
3
votes
2 answers
Quadratic function for increment speedup of countup
I'm writing a jQuery plugin for fast-counting up to a value when a page loads. Since javascript can't run as fast as I want it to for larger numbers, I want to increase the increment step so that it completes within a given timeframe, so I'd need a…
Mikau
- 99
- 6
2
votes
1 answer
Plot a quadratic curve as a function of y on a scatterplot
I am using JFreeCharts to plot a scatterplot in Java. I am using PolynomialFunction2D to plot a quadratic regression line, over the scatterplot.
PolynomialFunction2D can be used to plot quadratic curves, that are defined as a function of x, ie, y =…
Aish
- 69
- 9
2
votes
2 answers
Drawing the quadratic equation curve in c#
I am very new to c# System Draw so please do help me on my code. i am trying to plot the quadratic equation curve and is using the "for" loop in order to dot 10 coordinates for the curve. i have tested out this code many times and nothing ever…
RabbitBadger
- 539
- 7
- 19
2
votes
1 answer
non linear regression 'abline'
Still quite new to R (and statistics to be honest) and I have currently only used it for simple linear regression models. But now one of my data sets clearly shows a inverted U pattern. I think I have to do a quadratic regression analysis on this…
user1466195
- 51
- 1
- 1
- 4
1
vote
0 answers
How can I draw a quadratic curve that is going through a certain control point
I'm trying to draw a quadratic curve that has movable control points on the canvas. Everything is okay but how can I draw a quadratic curve that is going through a certain control point?
I tried this:
const startPoints = [0,0];
const controlPoints =…
mediumgoal
- 11
- 1
1
vote
3 answers
Optimize quadratic curve tracing using numeric methods
I am trying to trace quadratic bezier curves, placing "markers" at a given step length distance. Tried to do it a naive way:
const p = toPoint(map, points[section + 1]);
const p2 = toPoint(map, points[section]);
const {x: cx, y: cy} =…
Igor Shmukler
- 1,742
- 3
- 15
- 48
1
vote
0 answers
quadraticBezierTo Mirroring in Flutter
I'm very new to flutter and I have been trying to create a modern drawer, and I have found one, the problem is the one I have found usesquadraticBezierTo and enddrawerwhich opens the drawer on the right to left but want to usedrawer which opens the…
aiden
- 41
- 5
1
vote
1 answer
What is the best way to add 1000 regression lines to a ggplot? (Model-based bootstrapping)
From a bootstrapping model I have 1000 sets of coefficients for this regression model:
y = b0 + b1x + b2(x^2)
What is the function call to plot a quadratic line if I already have the coefficients? I.E. I do not want to "fit" a linear model to my…
jbpib27
- 33
- 4
1
vote
2 answers
UIBezierPath not equally fat everywhere and cut off
I am trying to draw a line with a smooth quadratic curve attached to its end. Therefore, I am using this code:
import Foundation
import UIKit
class IndicatingView: UIView {
var path: UIBezierPath!
override init(frame: CGRect) {
…
linus_hologram
- 1,595
- 13
- 38
1
vote
1 answer
Fitting a function f(x,y,z) with a quadratic polynomial
I'm trying to fit a function f(x,y,z) with the following quadratic polynomial:
3d polynomial
Some distorted spherical surface in three dimensions. The problem is related to the calculation of effective masses in solid state physics.
Here is a…
roman
- 123
- 9
1
vote
1 answer
How can I make a 3D plot in matplotlib of an ellipsoid defined by a quadratic equation?
I have the general formula of an ellipsoid:
A*x**2 + C*y**2 + D*x + E*y + B*x*y + F + G*z**2 = 0
where A,B,C,D,E,F,G are constant factors.
How can I plot this equation as a 3D plot in matplotlib? (A wireframe would be best.)
I saw this example but…
kamton
- 11
- 1
- 3
1
vote
1 answer
Quadratic curve not rendered correctly on different devices
I'm trying to draw a bezier path with a quadratic curve in the middle. The curve works well on iPhone 8 and XS, but is not responsive (i.e. not rendered correctly) on other devices.
Below is the image of the curve in iPhone XS (correct)
and iPhone…
hrtlkr29
- 383
- 1
- 7
- 21
1
vote
1 answer
Multiple least squares quadratic fit in ggplot
Notice that your graphic constructed from Problem 4 shows a quadratic
or curved relationship between log_wages against exp. The next
task is to plot three quadratic functions for each race level "black",
"white" and "other". To estimate the…
Dario Gentiletti
- 11
- 1