Ch. 6 reorder confusion in top terms plots

I spent some time today confused about the top terms plots in chapter 6 - Topic modeling (Fig 6.2 and Fig 6.4).

I assumed that mutate(term = reorder(term, beta)) would result in the bar plots, for each topic, being plotted in descending order of height, so that the viewer could quickly see the order of the most important words for each topic, but it does not. "new" in Fig 6.2 and "pip" in Fig 6.4 are in the "wrong" place.

I think this might be the intent of the code, although it appears @dgrtwo is aware of this behavior and has previously devised a solution for ordering factors this way. If this is not the intent, it is unclear to me why one would reorder the terms this way.

Using reorder_within would likely be too complex of a solution to address this minor issue, but maybe it would make sense to remove this line from the code? It either claims to order the terms in a way that that isn't reflected in the plot, or, if you are already familiar with how ggplot2 reorders factors in facetted plots, it reorders the terms for no obvious reason. With the line removed, the terms would be ordered alphabetically, which makes more sense than the way they are presented now.

dgrtwo / tidy-text-mining

Ch. 6 reorder confusion in top terms plots #45