An example Analysis of the problems encountered in R language ggplot2 drawing Line Chart with confidence interval and calculating mean in groups

This article shows you the R language ggplot2 drawing a line chart with confidence interval and an example analysis of the problems encountered in finding the mean in groups. the content is concise and easy to understand, which can definitely brighten your eyes. I hope you can get something through the detailed introduction of this article.

Today, I encountered a problem of finding the average in groups. I can't see what the problem is. Please help me to see what's wrong with the code at the end of the article, or leave a message about how the average in groups is realized in R language.

The line chart is usually used to show the changing trend of the data. For example, the fruit tree research usually studies the change trend of some physiological and biochemical indicators during the whole development process. At this time, you can choose the line chart to show the data.

The first is to construct a dataset library (tidyverse).

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