I'm very very new to R, but I want to use it to create a heatmap of the UK based on some data I have. I have a list of postcode districts (so more specific than just the postcode sector - SW15 as opposed to SW) with a count for each. Example below (figures made up)
CB11 - 25
DN3 - 12
LL12 - 6
NN10 - 45
etc.
I do not know if the data covers all of the postcodes in the UK, in case this may be an issue?