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How to Create Distance Maps

Learn how to use the Distance Maps Maps Data Augmentation Module in this step-by-step walkthrough.

Overview

The Distance Maps Module creates a continuous raster showing the distance from each location in the Area of Interest (AOI) to the nearest feature in a selected vector dataset.

Each cell in the output grid is assigned a value based on Euclidean (straight-line) distance to the input features. Lower values indicate areas closer to the selected features, while higher values indicate areas farther away.

Note: Access to Data Augmentation Modules is not available on all accounts. Contact your dedicated DORA contact to learn more.


What This Module Does

The Distance Maps Module transforms vector features, such as points, lines, or polygons, into numeric distance grids. It calculates the distance from each grid cell to the nearest selected feature in a shapefile and produces a continuous raster representing proximity.

The output is based on geometry only, not data values. When vector categories or types are selected, the module generates one raster per category.


Step-by-Step Instructions

  1. Open Data Augmentation

    • Once you've completed Step 3: Select Deposit Type, you can use the Data Augmentation Modules within an experiment.

    • Click Data Augmentation in the top middle navigation bar:

      Data Augmentation
  2. Select Distance Maps Module

    • Click Distance Maps, then click Select.

  3. Select a Shape File

    • Select the shapefile containing the features you want to calculate distance from.

    • This is typically a geology or structural shapefile. The module accepts point, line, or polygon vector data.

  4. Select an Attribute

    • Select the attribute (column) that defines how the shapefile should be categorized.

    • This attribute is used to group features so distance can be calculated separately by type. Common examples include lithology, formation, or structure type.

  5. Set the Resolution

    • Set the output grid resolution.

    • The resolution controls how the continuous distance surface is created across the AOI.

    • Choose a resolution that fits the shape and extent of your AOI.

  6. Select One or More Types

    • Select one or more attribute values (for example, specific lithologies or formations).

    • A separate Distance Map raster will be generated for each selected type.

  7. Generate Distance Maps

    • Click Generate to create the Distance Map(s).

  8. Review the Output Raster(s)

    • Review the generated Distance Map rasters for each selected type.

    • Each raster represents the straight-line distance to the nearest feature of that category.

  9. Save or Export Result

    • Rename the output raster if needed.

    • Click the output to select it, then:

      • Export to download a .zip file of the raster.

      • Add to Input Features to use the map in the current experiment.


Interpreting the Output

Distance Maps quantify proximity to specific geological features across the AOI. Lower values represent areas closer to the selected features, while higher values represent areas farther away.

Within DORA, Distance Maps are typically included as input features in experiments. The raster format allows proximity information to be combined with other standardized layers.

When multiple types are selected, each output raster represents distance to a single category, allowing proximity to different features to be evaluated independently.


Learn More


Still Have Questions?

Reach out to your dedicated DORA contact or email support@VRIFY.com for more information.

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