Question
Answer and Explanation
To remove frame borders in a TMap visualization in R, you can use the `tm_layout()` function from the `tmap` package. The `frame` argument within `tm_layout()` allows you to control the display of the map's frame. Here's how you can achieve this:
1. Install and Load the `tmap` Package: If you haven't installed it yet, use the following command:
install.packages("tmap")
Then, load the package in your R session:
library(tmap)
2. Create Your TMap: Begin by creating your TMap object. This might involve using spatial data with functions like `tm_shape()` and adding layers such as `tm_polygons()`, `tm_dots()`, or other appropriate elements.
3. Use `tm_layout()` to remove the frame: To remove the frame border, use the `tm_layout()` function and set the `frame` argument to `FALSE`. This will make the map appear without a surrounding frame.
4. Example Code: Here's a basic example demonstrating how to remove the frame borders:
# Assuming you have a spatial object named 'your_spatial_data'
# And you want to plot a simple polygon map
library(tmap)
data(World)
tm_shape(World) +
tm_polygons("pop_est") +
tm_layout(frame = FALSE)
In this example, `tm_shape(World)` initiates the TMap with the `World` spatial data. `tm_polygons("pop_est")` plots the polygons with a color scale based on the "pop_est" column and `tm_layout(frame = FALSE)` removes the frame border.
5. Adjusting other layout features: You can combine other `tm_layout()` arguments with `frame = FALSE` to customize your map further, such as adding titles, changing background colors, and more. For instance:
tm_shape(World) +
tm_polygons("pop_est") +
tm_layout(frame = FALSE, main.title = "World Population", bg.color = "lightblue")
This would remove the frame, add the title "World Population", and set a light blue background color.
By using `tm_layout(frame = FALSE)`, you can effectively remove frame borders from your TMaps in R and create cleaner visualizations.