Data is a critical component of SEO content strategy. Basing your writing on reliable data shows a commitment to accuracy, building your authority and credibility in readers’ eyes. This approach to ...

In a data-driven world, the ability to analyze and interpret information is critical. Harvard University’s Professional Certificate in Data Science provides a structured, comprehensive program for ...

In the R programming language, the de facto standard framework for drawing rectangular coordinates is ggplot2. The most important feature of ggplot2 is that it is object-oriented and uses the plus ...

Prerequisite: Introduction to Data Visualization in R or moderate experience using R. Learn how to create advanced visualizations in R with the ggplot2 package. We will learn the Grammar of Graphics, ...

Create R data visualizations easily with a few lines of simple code using the ggcharts R package. Plus, the resulting charts and graphs are customizable ggplot objects. ggplot2 is an enormously ...

The table below shows my favorite go-to R packages for data import, wrangling, visualization and analysis — plus a few miscellaneous tasks tossed in. The package ...

The ggplot2 data visualization R package is extremely powerful and flexible. However, it’s not always easy to remember how to do every task – especially if you’re not a frequent user. How do you ...

In one case, I generate a ggplot from the global environment. In the second case, I generate the same ggplot but from within my custom plot function. I then save both these plots to disk and compare ...

相比几何对象，增加了： * fun.data 表示指定完整的汇总函数，输入数字向量，输出数据框，常见4种:smean.cl.boot,smean.cl.normal,smean.sdl,smedian.hilow。 更多 * fun.y 表示指定对y的汇总函数，同样是输入数字向量，返回单个数字，这里的y通常会被分组，汇总后是每组返回1 ...

采用图层的设计方式，有利于结构化思维 将表征数据和图形细节分开，能快速将图形表现出来，使创造性绘图更加容易，而不必纠结于图形的细节，细节可以后期慢慢调整 将常见的统计变换融入到了绘图中 有明确的起始(ggplot开始)与终止(一句话一个图层)，图层 ...