R Notebook

library(tmap)

## Warning: package 'tmap' was built under R version 4.5.2

library(bangladesh)

## Warning: package 'bangladesh' was built under R version 4.5.2

division <- get_map("division")

tm_shape(division) +
  tm_polygons()

tm_shape(division) +
  tm_polygons(fill = "Division")

tm_shape(division) +
  tm_polygons(fill = "Division") +
  tm_title("Divisions of Bangladesh")

tm_shape(division) +
  tm_polygons(fill = "Division") +
  tm_title("Administrative Divisions of Bangladesh") +
  tm_text("Division")

## [plot mode] fit legend/component: Some legend items or map compoments do not
## fit well, and are therefore rescaled.
## ℹ Set the tmap option `component.autoscale = FALSE` to disable rescaling.

# ------ Add a scale bar ---------
tm_shape(division) +
  tm_polygons(fill = "Division") +
  tm_title("Administrative Divisions of Bangladesh") +
  tm_text("Division") +
  tm_compass(position = c("left", "bottom"), type = "8star", size = 5) +
  tm_scalebar(position = c("right", "bottom"), text.size = 0.7)

## [plot mode] fit legend/component: Some legend items or map compoments do not
## fit well, and are therefore rescaled.
## ℹ Set the tmap option `component.autoscale = FALSE` to disable rescaling.

tm_shape(division) +
  tm_polygons(fill = "Division") +
  tm_title("Administrative Divisions of Bangladesh") +
  tm_text("Division") +
  tm_compass(position = c("left", "bottom"), 
type = "8star", size = 5)

## [plot mode] fit legend/component: Some legend items or map compoments do not
## fit well, and are therefore rescaled.
## ℹ Set the tmap option `component.autoscale = FALSE` to disable rescaling.

tm_shape(division) +
  tm_polygons(fill = "Division") +
  tm_title("Administrative Divisions of Bangladesh") +
  tm_text("Division") +
  tm_compass(position = c("left", "bottom"), type = "8star", size = 5) +
  tm_scalebar(position = c("right", "bottom"), text.size = 0.7)

## [plot mode] fit legend/component: Some legend items or map compoments do not
## fit well, and are therefore rescaled.
## ℹ Set the tmap option `component.autoscale = FALSE` to disable rescaling.

tm_shape(division) +
  tm_polygons(fill = "Division") +
  tm_title("Administrative Divisions of Bangladesh") +
  tm_text("Division") +
  tm_compass(position = c("left", "bottom"), type = "8star", size = 5) +
  tm_scalebar(position = c("right", "bottom"), text.size = 0.7)+
  tm_grid(lines = TRUE, labels.size = 0.8, col = "gray90")

## [plot mode] fit legend/component: Some legend items or map compoments do not
## fit well, and are therefore rescaled.
## ℹ Set the tmap option `component.autoscale = FALSE` to disable rescaling.

library(bangladesh)
library(dplyr)

## 
## Attaching package: 'dplyr'

## The following objects are masked from 'package:stats':
## 
##     filter, lag

## The following objects are masked from 'package:base':
## 
##     intersect, setdiff, setequal, union

library(sf)

## Linking to GEOS 3.13.1, GDAL 3.11.0, PROJ 9.6.0; sf_use_s2() is TRUE

# Load the district shapefile
district <- get_map("district")

# Filter and transform
flood_zone <- district %>%
 filter(District %in% c("Khulna", "Satkhira"))

# tmap plot
tm_shape(flood_zone) +
  tm_polygons(
    col = "red",
    border.col = "black"
  ) +
  tm_text("District", size = 0.8) +
  tm_title("Flood-Prone Districts (Khulna & Satkhira)") +
  tm_compass(position = c("left", "bottom"), type = "8star", size = 5) +
tm_scalebar(position = c("right", "bottom"), text.size = 0.7) +  tm_grid(lines = TRUE, labels.size = 0.8, col = "gray90")

## 

## ── tmap v3 code detected ───────────────────────────────────────────────────────

## [v3->v4] `tm_polygons()`: use 'fill' for the fill color of polygons/symbols
## (instead of 'col'), and 'col' for the outlines (instead of 'border.col').
## [plot mode] fit legend/component: Some legend items or map compoments do not
## fit well, and are therefore rescaled.
## ℹ Set the tmap option `component.autoscale = FALSE` to disable rescaling.
## This message is displayed once every 8 hours.

library(bangladesh)
library(dplyr)
library(sf)

# Load the district shapefile
district <- get_map("district")

# Filter and transform
flood_zone <- district %>%
  filter(District %in% c("Khulna", "Satkhira")) %>%
  st_transform(32646)
# tmap plot
tm_shape(flood_zone) +
  tm_polygons(
    col = "red",
    border.col = "black"
  ) +
  tm_text("District", size = 0.8) +
  tm_title("Flood-Prone Districts (Khulna & Satkhira)") +
  tm_compass(position = c("left", "bottom"), type = "8star", size = 5) +
tm_scalebar(position = c("right", "bottom"), text.size = 0.7) +  tm_grid(lines = TRUE, labels.size = 0.8, col = "gray90")

## 

## ── tmap v3 code detected ───────────────────────────────────────────────────────

## [plot mode] fit legend/component: Some legend items or map compoments do not
## fit well, and are therefore rescaled.
## ℹ Set the tmap option `component.autoscale = FALSE` to disable rescaling.