R: Customizing seasons for windRose plot in Openair

Question

I am trying to plot a wind rose plot of a site using openair package in R. The code snippet is:

windRose(df, type = "season", paddle = F, key.position = "right") and the plot is:

We know, this package openair considers seasons DJF as winter, MAM as spring and so on. However, in this region another categorization for seasons is commonly used as follows:

• winter: Dec Jan Feb
• Pre-monsoon: Mar Apr May Jun15 (i.e. till 15th of June)
• Monsoon: 15Jun Jul Aug Sep (i.e. from 15th of June)
• Post-monsoon: Oct Nov.

I am new in R, hence finding difficulty to plot the wind rose with the later categorization and putting the titles accordingly. I would highly appreciate any help.

Thanks!

Answer 1

Function windRose has an argument "type" which accepts a custom character or factor vector to facet (and label) the plot by.

1. add a column for your custom season, e.g. "my_custom_season"
2. make this column contain the corresponding season for each row ("winter", "pre-monsoon" etc.)
3. call windRose(your_data,...,type="my_custom_season")