R language ggplot2 visualization: visualize the scatter diagram and add text labels to the data points in the scatter diagram, using geom of ggrep package_ text_ The rep function avoids overlapping da

R Language ggplot2 visualization ： Visualize the scatter diagram and add text labels to the data points in the scatter diagram 、 Use ggrepel Bag geom_text_repel Function to avoid overlapping data point labels （ Customize the specified font type font family）

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