DEM Elevation Analysis in R

Project Overview

This project analyzes elevation classes using DEM (Digital Elevation Model) data in R. The study focuses on two sub-districts: Siatas Barita and Muara Batang Toru.

Objectives

• Read raster and vector spatial data
• Check and match coordinate reference systems (CRS)
• Clip DEM data by administrative boundaries
• Classify elevation into three classes
• Calculate the area of each elevation class
• Produce thematic maps and output tables

Study Areas

• Siatas Barita
• Muara Batang Toru

Elevation Classes

• Low: 0–200 m
• Medium: 200–500 m
• High: >500 m

Tools and Libraries

• R
• terra
• sf
• dplyr

Skills Demonstrated

• Spatial data processing in R
• Raster clipping and masking
• CRS checking and transformation
• Elevation classification
• Area calculation from raster classes
• Map output generation

Main Script

• mini_project_dem.R

Output Maps

DEM - Siatas Barita	DEM - Muara Batang Toru
Classification - Siatas Barita	Classification - Muara Batang Toru

Output Table

• tabel_luas_ketinggian.csv

Project Value

This project demonstrates basic spatial data analysis skills in R, including raster processing, vector handling, CRS matching, spatial clipping, raster classification, and area calculation.

Author

Dedy Lesmana