# Map Viewer

The map viewer provides an interactive mapping interface for visualizing spatial data.

## Overview

The map viewer (`view_map.php`) displays multiple datasets on an interactive map with full analysis capabilities.

## Features

### Map Display

- Multiple basemap options
- Layer management
- Zoom and pan controls
- Feature identification
- Coordinate display
- Scale bar

### Layer Management

- Add/remove layers
- Layer visibility toggle
- Layer opacity control
- Layer ordering
- Layer grouping

### Styling

- Point styling
- Line styling
- Polygon styling
- Graduated colors
- Categorical colors
- Custom styles

### Analysis Tools

Integrated analysis panel with:

- Hot spot analysis
- Outlier detection
- KDE (Kernel Density Estimation)
- Clustering
- Buffer analysis
- Nearest neighbor
- Overlay operations
- Raster tools

## Basemaps

Available basemap options:

- OpenStreetMap
- CartoDB Positron
- CartoDB Dark Matter
- CartoDB Voyager
- ESRI World Imagery
- Custom WMS layers

## Interaction

### Feature Identification

- Click features to view details
- Popup display with attributes
- Link to feature detail pages

### Drawing Tools

- Draw polygons for clipping
- Draw lines for profiles
- Draw points for analysis
- Measure distances and areas

### Spatial Queries

- Query by location
- Query by attributes
- Spatial filters
- Buffer queries

## Related Documentation

- [Dataset Viewer](dataset-viewer.md)
- [Analysis Panel](analysis-panel.md)
- [Dashboard Builder](dashboard-builder.md)