# Dissolve Analysis

Merge features based on attribute values, optionally aggregating numeric fields.

## Overview

Dissolve analysis merges adjacent or overlapping features that share the same attribute value, creating simplified datasets.

## Inputs

- **Source Dataset**: Dataset to dissolve
- **Dissolve Field**: Field to dissolve on (or merge all)
- **Aggregation Fields** (optional): Fields to aggregate with functions

## Outputs

New dataset containing:

- Merged geometries for each group
- Aggregated attribute values
- Group identifiers

## Aggregation Functions

- **Sum**: Sum of numeric values
- **Average**: Average of numeric values
- **Min/Max**: Minimum/maximum values
- **Count**: Count of features

## Example

```json
{
  "source_dataset_id": 123,
  "dissolve_field": "category",
  "aggregation_fields": {
    "population": "sum",
    "area": "sum"
  }
}
```

## Background Jobs

This analysis runs as a background job. See [Dissolve Worker](../workers/dissolve.md) for details.

## Use Cases

- Administrative boundary simplification
- Aggregated statistics
- Data generalization
- Map simplification

## Notes

- Adjacent features are merged
- Aggregation required for numeric fields
- Complex geometries may slow processing
- Results depend on dissolve field values

## Related Documentation

- [Dissolve Worker](../workers/dissolve.md)
- [Analysis API](../api/analysis.md)