When going through vector data manipulation in R, we have just touched the surface of what could be possible using R. We will cover other data manipulation techniques as we step on through new chapters. But if you want to have a more in-depth discussion about these topics, you can have a look at the book Learning R for Geospatial Analysis by Michael Dorman and An Introduction to R for Spatial Analysis and Mapping by Brunsdon and Comber. For QGIS, if you want better coverage of visualizing and stylizing vector data, QGIS by Example by Bruy and Svidzinska and Mastering QGIS by Menke et al. are two great reads.
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