# How do I do these two tasks involving buffers and overlay analysis (using Rstudio)? In this task,…

How do I do these two tasks involving buffers and overlay analysis (using Rstudio)?

In this task, you will create a 250m (3-4 min walk) and 500m (around 7 min walk) buffers around parks. Then, summarise the population living 0-250m, 251-500m and more than 500m from parks based on SA1 centroids (or points on surface).

Q: How many people in Christchurch do not have park within 500m radius?

In the last task, you are going to calculate the area of buffers (0-250m and 0-500m) covering each ward. Then calculate the proportion of each ward covered by buffers (expressed as percentage % of the original ward area rounded to 2 decimal places). As the final step, create the choropleth maps of wards (small multiples – 0-250m and 0-500m) coloured by the calculated percentages.

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