Very close to this question How to use Greek symbols in ggplot2?, but I don't just want a single greek letter, I want something like Δprice as a label.
To get Δ as my xlabel, I can use xlab(expression(Delta)), but how to get Δprice?
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3Study `help("plotmath")`. `expression(Delta * "price")` – Roland Mar 30 '17 at 10:15
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Also today: http://stackoverflow.com/questions/43112094/getting-greek-character-in-plot-axis – Axeman Mar 30 '17 at 11:39