Created
March 24, 2023 02:15
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DairyNZ R community March 2023 Map code
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| #R community code | |
| #Packages | |
| library(tidyverse) | |
| library(readxl) | |
| library(leaflet) | |
| library(sp) | |
| #Make dummy data | |
| herd_map_df <- structure(list( | |
| farm_id = 1:10, #Unique identifier | |
| longitude = c( | |
| 175.45375457897, 175.606743258373, 175.625382066676, | |
| 175.62161002476, 175.733051547872, 175.547922685997, | |
| 175.586420342908, 175.679366630854, 173.9451, | |
| 173.8019), | |
| latitude = c( | |
| -37.6964326410296, -37.6315371816273, -37.5684444733237, | |
| -37.7819236052399, -37.6961165021275, -37.7653201740032, | |
| -37.5825353370919, -37.6830031491463, -39.19344, | |
| -39.21418), | |
| group = c("High", "Low", "Med", "High", "Low", "Med", | |
| "High", "Low", "Med", "High")), | |
| row.names = c(NA,-10L), | |
| class = c("tbl_df", | |
| "tbl", "data.frame")) | |
| herd_map_df | |
| #Make map | |
| herd_map_df %>% | |
| leaflet() %>% | |
| addCircleMarkers(~longitude, ~latitude, | |
| color = ~ ifelse(group == "High", "red", | |
| ifelse(group == "Low", "green", "blue"))) %>% | |
| addTiles() | |
| #Make better markers | |
| #https://www.jla-data.net/eng/leaflet-markers-in-r/ | |
| awesome <- makeAwesomeIcon( | |
| icon = "fire", | |
| iconColor = "black", | |
| markerColor = "blue", | |
| library = "fa") | |
| herd_map_df %>% | |
| leaflet() %>% | |
| addAwesomeMarkers(icon = awesome) %>% | |
| addTiles() | |
| awesome_set <- awesomeIconList( | |
| "High" = makeAwesomeIcon( | |
| icon = "fire", | |
| iconColor = "black", | |
| markerColor = "red", | |
| library = "fa"), | |
| "Low" = makeAwesomeIcon( | |
| icon = "heart", | |
| iconColor = "black", | |
| markerColor = "green", | |
| library = "fa"), | |
| "Med" = makeAwesomeIcon( | |
| icon = "star", | |
| iconColor = "black", | |
| markerColor = "blue", | |
| library = "fa")) | |
| herd_map_df %>% | |
| leaflet() %>% | |
| addAwesomeMarkers(icon = ~ awesome_set[group]) %>% | |
| addTiles() | |
| #Make it spacedish view | |
| herd_map_df %>% | |
| leaflet() %>% | |
| addAwesomeMarkers(icon = ~ awesome_set[group]) %>% | |
| addProviderTiles('Esri.WorldImagery') |
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