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Create a table of number of reported bands by state. Use “dplyr” to group by state, count n, and filter states where fewer than 10 bands were reported. Use fct_reorder in “forcats” to reorder by n.
Calculate distance from banding location lat/long to encounter location lat/long using distm function in “geosphere.” Create table of distance summary statistics by month of encounter.
| Month of Encounter | Mean Dist from Banding Location | n | Min | Max | SD | SE |
|---|---|---|---|---|---|---|
| Jan | 211.98147 | 309 | 0.8933529 | 1547.93484 | 197.08736 | 11.21191 |
| Feb | 158.95840 | 9 | 10.6182944 | 430.48404 | 170.15725 | 56.71908 |
| Mar | 42.27806 | 2 | 15.7635814 | 68.79254 | 37.49713 | 26.51448 |
| Apr | 2315.43319 | 5 | 1952.6548189 | 2612.51995 | 249.28788 | 111.48493 |
| May | 1162.12114 | 1 | 1162.1211385 | 1162.12114 | NaN | NA |
| Aug | 1965.12910 | 6 | 1342.8608556 | 2485.46650 | 427.88534 | 174.68346 |
| Sept | 1811.22357 | 24 | 68.2988719 | 2735.92392 | 612.33942 | 124.99326 |
| Oct | 1789.08755 | 102 | 246.5325826 | 2689.93183 | 530.05963 | 52.48372 |
| Nov | 540.98240 | 143 | 0.7085300 | 2326.68876 | 494.56082 | 41.35725 |
| Dec | 325.82698 | 213 | 0.6912063 | 2771.06183 | 332.87523 | 22.80823 |
Create an animated map where encounter locations are shown by date (since 2015). Use “gganimate” and “ggmap.”
## 0 1.September 2.October 3.November 4.December 5.January
## 23 24 102 143 213 309
Create a density map for each “hunting season” as opposed to each year. Show monthly harvest density. This figure includes data for mallards only.
## 2014-2015 2015-2016 2016-2017 2017-2018 2018-2019
## 4 48 98 330 311
Animate the mallard density map by monthly density.