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This article introduces the knowledge of "Line introduction in R language Visualization ggplot Chart". In the operation of actual cases, many people will encounter such a dilemma, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

Today, I would like to share with you a kind of important element in the ggplot chart-lines.

Don't think that writing a chapter for lines is a bit of a mountain out of a molehill. In fact, lines play an important role in charts, even humble grids, axes, or thick lines, linetypes, pounds, etc., will determine the quality of your chart.

There are many lines involved in the ggplot function system in R language. The most common scene is that we do geom_line () (line chart), geom_path () (path map), and the lines involved in the drawing area (panel), chart area and grid system (grid) of the chart.

Today, we take a line chart as an example to briefly illustrate the main parameters of the line in the ggplot function and their effects.

Library (ggplot2)

Library (reshape2)

Library (ggthemes)

Library (RColorBrewer)

Data

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