Calculate Road Length - Advanced

About the Project

The Calculate Road Length - Advanced plugin is a Python QGIS plugin that automates linear feature length calculation. It allows:

• Calculating total length of all features in a layer;
• Grouped calculations by the highway field category;
• Automatically creating the comp_km field containing each feature's length;
• Exporting results in reprojected Shapefile (EPSG:31982) or CSV.

Calculations use the EPSG:31982 coordinate system, ensuring metric accuracy even if the original layer is in another CRS.

Main Features:

• Select vector layers of line type
• Calculate total length in kilometers
• Calculate length by highway field category
• Automatically create comp_km field for each feature
• Export results to reprojected Shapefile (EPSG:31982)
• Export results to CSV

Why I Created This Plugin

In my work, we had to manually calculate road lengths and group by category, which was time-consuming and error-prone. To automate this, I created Calculate Road Length, allowing:

• Select the desired layer directly in QGIS;
• Choose between total calculation or by category;
• Generate an additional field with individual lengths;
• Easily export results in CSV or Shapefile.

How to Use

1. Install the plugin by copying the folder into the QGIS plugins folder or using the GitHub repository.
2. Open QGIS and load the vector layer containing linear features.
3. Open the plugin from the Calculate Road Length menu.
4. Select the desired layer and choose between Total Calculation or By Category.
5. View the results in the text area shown in the plugin window.
6. If needed, export the resulting layer to Shapefile or CSV.

Technical Information

• Plugin Name: Calculate Road Length
• Version: 1.0.0
• Compatibility: QGIS 3.x or higher
• Created Field: comp_km
• CRS Used: EPSG:31982