Echart polar coordinates, azimuth and distance diagram, icon symbol rotation and size, color gradient

Background: Participating in an interactive chart project, the customer had a need for polar coordinate comparison to display different types of indicator data in different directions and distances. Specifically, the attribute fields are: Source, distance, orientation, ID, rotation angle, size Let’s look at the renderings first: Technical points: Legend description: The distance is the radial […]

k-Wave丨Photoacoustic imaging simulation丨Definition of Gaussian sensor frequency response + comparison of simulation functions + setting of initial pressure gradient (5)

This article introduces– 1.How to define Gaussian sensor frequency response: How to express the frequency response of a detector (for example: piezoelectric ultrasonic transducer) when the response has a Gaussian shape, based on the example of a homogeneous propagation medium; 2.Comparison of simulated functions: Introducing a brief comparison between the simulated functions “kspaceFirstOrder2D” and “kspaceecondorder”. […]

Unity hand-painted Mesh realizes color gradient

The requirements I received are as follows: Please see the final renderings Let’s start Simplifying the requirement is to create a Mesh with a width*2 and a color gradient based on 2 points. Creating a square Mesh requires four points, and what I need here is only two, so I regard the two points as […]

html+jquery circular gradient progress bar

Special point, circular progress bar, the color of the progress bar changes with the progress, from green to yellow, and finally to red. Mainly applicable: large screen display. html <canvas id=”canvas” width=”160″ height=”170″>cpu</canvas> js call Locate the position of the corresponding div const canvas = $(‘.div’).find(‘#canvas’)[0]; updateProgress(canvas, 55, “CPU”); method // Function to update progress […]

week2_lab2 Gradient Descent for Linear Regression

week2_lab2 Gradient Descent for Linear Regression (Boston Housing dataset) (study notes) In this exercise, you will learn the following implement the gradient descent method implement the minibatch gradient descent method We will use the Boston Housing data, similar to Week 1. We can import the dataset and preprocess it as follows. Note we add a […]

FGSM (Fast Gradient Sign Method) algorithm source code analysis

Paper link: https://arxiv.org/abs/1412.6572 Source code: https://github.com/Harry24k/adversarial-attacks-pytorch/tree/master Source code import torch import torch.nn as nn from ..attack import Attack class FGSM(Attack): r””” FGSM in the paper ‘Explaining and harnessing adversarial examples’ [https://arxiv.org/abs/1412.6572] Distance Measure: Linf Arguments: model (nn.Module): model to attack. eps (float): maximum perturbation. (Default: 8/255) Shape: – images: :math:`(N, C, H, W)` where `N […]

Solving AttributeError: GradientBoostingRegressor object has no attribute staged_decision_function

Table of Contents Solving AttributeError: ‘GradientBoostingRegressor’ object has no attribute ‘staged_decision_function’ Solution 1: Upgrade the sklearn version Solution 2: Use the staged_predict function instead Resolve AttributeError: ‘GradientBoostingRegressor’ object has no attribute ‘staged_decision_function’ When using ??GradientBoostingRegressor?? for gradient boosting regression, you sometimes encounter the error ??AttributeError: ‘GradientBoostingRegressor’ object has no attribute ‘staged_decision_function’??. This error is usually […]

Matlab implements image filtering, edge extraction (five operators), and sharpening (two gradient operators)

1. Experiment purpose 1. Image 3*3 mean filtering and median filtering. 2. Use gradient, sobel, and Laplacian operators to sharpen the image. 3. Use multiple operators (at least five) to extract edges from the image. Compare the characteristics of each operator, analyze the processing results, find out where in the image the processing effect is […]