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# 数据科学代写|数据可视化代写Data Visualization代考|DABP13000 Color and Perception

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## 数据科学代写|数据可视化代写Data Visualization代考|Color and Perception

One of the strengths of color as a means of communication through charts is its ability to evoke emotions and reactions, create moods, and attract attention to key aspects of the chart. Understanding how color is perceived enables us to use it to more effectively deliver our message. Failure to understand how color is perceived can lead to its misuse, which can result in confusion and unnecessary clutter. In this section, we discuss important considerations in the use of color to effectively communicate through charts.

## 数据科学代写|数据可视化代写Data Visualization代考|Attributes of Color: Hue, Saturation, and Luminance

One of the three attributes of a color is its hue, which is the base of a color. The primary hues are the three hues that cannot be mixed or formed by any combination of other hues, and all other hues are derived from these three hues. Excel uses the red, green, blue (RGB) color model with primary hues red, green, and blue. Combinations of these hues create other secondary colors, such as orange, yellow, and violet, and various tertiary colors. The relationships between primary, secondary, and tertiary colors are commonly displayed on a color wheel. Figure $4.2$ shows the RGB model and RGB color wheel.

In addition to hue, colors are commonly distinguished by saturation and luminance. Saturation refers to the amount of gray in a color and determines the intensity or purity of the hue in the color. A completely pure hue has no grayness and is referred to as $100 \%$ saturated. As the saturation level decreases, the hue becomes less intense and more grayish. At 0\% saturation, all hues become gray. Figure $4.3$ shows the primary hues in the RGB primary color model at various levels of saturation.

Combinations of hue, luminance, and saturation determine base, brightness, and grayness of a color. As we will see later in this chapter, Excel allows you to control the hue, saturation, and luminance of the color of an Excel object.

## MATLAB代写

MATLAB 是一种用于技术计算的高性能语言。它将计算、可视化和编程集成在一个易于使用的环境中，其中问题和解决方案以熟悉的数学符号表示。典型用途包括：数学和计算算法开发建模、仿真和原型制作数据分析、探索和可视化科学和工程图形应用程序开发，包括图形用户界面构建MATLAB 是一个交互式系统，其基本数据元素是一个不需要维度的数组。这使您可以解决许多技术计算问题，尤其是那些具有矩阵和向量公式的问题，而只需用 C 或 Fortran 等标量非交互式语言编写程序所需的时间的一小部分。MATLAB 名称代表矩阵实验室。MATLAB 最初的编写目的是提供对由 LINPACK 和 EISPACK 项目开发的矩阵软件的轻松访问，这两个项目共同代表了矩阵计算软件的最新技术。MATLAB 经过多年的发展，得到了许多用户的投入。在大学环境中，它是数学、工程和科学入门和高级课程的标准教学工具。在工业领域，MATLAB 是高效研究、开发和分析的首选工具。MATLAB 具有一系列称为工具箱的特定于应用程序的解决方案。对于大多数 MATLAB 用户来说非常重要，工具箱允许您学习应用专业技术。工具箱是 MATLAB 函数（M 文件）的综合集合，可扩展 MATLAB 环境以解决特定类别的问题。可用工具箱的领域包括信号处理、控制系统、神经网络、模糊逻辑、小波、仿真等。