DescriptionJoseph Ina is a clever girl and addicted to machine learning recently. She pays much attention to a method called linear discriminant analysis, which has interesting properties.
In order to test the algorithm's efficiency, she collects collect datasets. what's more, each data is divided into two parts: training data and test data. she gets the parameters of the model on training data and test the model on test data.
To her surprise, she finds each dataset's test error curve is just a
The first contact with Cashapelayer and Bezier curves, see the next Geek College video. It feels good for beginners. Today, a tutorial on creating a simple circular progress bar with Cashapelayer and Bezier curvesLet's start with a brief introduction to the next Cashapelayer1,cashapelayer inherits from Calayer, all properties of Calayer can be usedIt makes sense to use 2,cashapelayer with Bezier curves.Shape: ShapesBezier
Reprinted from: http://46aae4d1e2371e4aa769798941cef698.devproxy.yunshipei.com/qiaoqiaoqiao2014/article/details/469287871.CAShapeLayer Introduction1.1CAShapeLayer inherits from Calayer and can use all the property values of Calayer;1.2CAShapeLayer requires Bézier curves to be used in order to make sense (that is, to have effects)1.3 Using Cashapelayer (belonging to coreanimation) and Bezier curves can be im
Curve method of canvas2d self-band
Recently in the study of 3D soft body calculation, so crazy to fill some knowledge. Often involves some numerical analysis of things, mainly the curve of various interpolation algorithms. It suddenly occurred to me that the canvas2d itself was also able to draw curves, using two times and three Bezier curves. In fact, I have not used it for this method, now to try it ~
T
Comments: Arc, arcTo, and quadraticCurveTo. they all have one thing in common, that is, the curves they draw can only be biased towards one side. The biggest difference between bezierCurveTo and bezierCurveTo today is that they have two control points, that is, they can draw an S-shaped curve, if you are interested, you can find out. In the previous article, I have already discussed three ways to draw curves
informationContext.arc (CenterX, CenterY, radius, StartingAngle, endingangle);Context.stroke ();
2,beziercurveto () to draw Bezier curves
Bezier curves are popular because they guarantee smoothness, even small, large radians.A Bezier curve has two control points. The start tangent of the curve joins the first control point, and the endpoint tangent joins the second control point. The curve is between the
Bezier curves in the Cocos2d-xIn Cocos2d-x, the encapsulation class for the Bezier curve movement is Ccbezierto and Ccbezierby.All two actions need to pass in a parameter, Ccbezierconfig, which is a struct with three fields1.CCPoint endposition: End point2.CCPoint controlpoint_1: Control point 13.CCPoint controlpoint_2: Control point 2Two control points will affect the trend of the curve.The realization of the cocos2d-x curve motion is two times curve
Recently, when doing CSS3 animation, I feel that some of the default animation easing effects are not enough to meet the requirements, so think of some of the usual curve of Bezier, used in the futureCurve Reference: http://cubic-bezier.com/,http://easings.net/zh-cn#The commonly used Bezier curves are as follows:PS: Not all the easing functions have Bezier curves, most of the easing of jquer are there, but
Use the UIBezierPath ability to create vector-based paths, which are the Core Graphics framework's encapsulation of paths. Use this class to define simple shapes, such as ellipses, rectangles, or shapes that have multiple lines and curved segments.UIBezierPathis CGPathRef the encapsulation of the data type. If the path is based on a vector shape, it is created with straight lines and curves. We use straight segments to create rectangles and polygons,
Waveform graphs receive multiple data types to display multiple curves. The waveform receives a two-dimensional array of values, and one line in the array is a curve . The waveform graph treats the data in the array as a point on the graph, starting at x = 0 and incrementing the x index in increments of 1. Connecting a two-dimensional array data type to a waveform diagram, right-clicking the waveform and choosing Transpose Array from the shortcut menu
In general, we usually use a chart that inserts a curve directly. But sometimes, when we finish the experiment, we need to make a comparative analysis of the results. Then, you will need to draw multiple curves on a graph to compare the curves. On this, small knitting is also very confused, in order to solve this problem, small knitting specially learned the operation process. Below, the small set will be h
Comments: One of the difficulties in drawing curves in anvas is that there are four functions connected to curves! They are arc, arcTo, quadraticCurveTo, and bezierCurveTo. let me start with the simplest method of arc. If you are interested, you can find out. In the canvas Line Painting article, I talked about how to draw a straight line, this article on Curve painting should have been published. However, b
Comments: Arc and arcTo are similar in names. ArcTo is also a method for drawing curves, and the curve drawn by arcTo is also an arc of a positive circle. However, his parameters and arc are almost out of the box ~, If you are interested, let's take a look at the application of the arcTo method. In the previous article, we talked about the canvas arc method, which is related to its arcTo method.The arc and arcTo are similar in names. ArcTo is also a m
The principle and implementation of Bezier curves are ubiquitous on the web and are not mentioned here. In fact, in Unity's editor mode, the system already provides a ready-made interface that allows for a freely draggable Bezier curve with just a few lines of code.First, create a Bezier.cs file with the following code:Add code to any gameobject using unityengine;using system.collections;public class bezier:monobehaviour{ // Starting from StartPosi
Use AChartEngine to create curves, bar charts, and pie charts for Android
Previously, in java Development, charts were implemented using the JFreeChar component. Recently, there was a small project that required data analysis on the Android end. How can we implement charts? I checked that google provides an open-source component.AChartengine is very easy to use and can be used to draw various types of images, fully meeting the development needs. The f
This article introduces the use of Word to draw curves
We can also smoothly draw some wonderful curves in Word, as convenient as the tools in Flash, the following steps:
1. Draw a straight line
First, draw a line with any drawing tool.
2. Edit vertices
(Figure 1)
Next, select the line you just drew, and choose edit Vertices from the right-click menu. As shown in Figure 1, the line will be surround
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