Constructing meaningful and useful graphical representations of data. (If your question is only about how to get particular software to produce a specific effect, then it is likely not on topic here.)
Overview
Data visualization refers to techniques for presenting results in graphical form, such as histograms, scatterplots, or boxplots. Data visualization is a special challenge for data with high dimensionality.
If your question is only about how to get particular software to produce a specific effect, then it is likely not on topic here. Programming questions (for example, in Python, or in R with ggplot, etc.) for which you can supply a reproducible example are usually welcomed on StackOverflow.
References
The following question contains references to data visualization resources:
