Pin Drop Map (Multi-Marker Creator)
Drop custom markers on an interactive map, assign colors and labels, add descriptive notes, and share or export your map as GeoJSON, KML, CSV, or PNG.
The Pin Drop Map allows you to drop, label, color-code, and organize multiple location marker pins on an interactive map. It provides sequential numbering, custom notes, address geocoding, and complete export to CSV, GeoJSON, and KML for Google Earth and GPS navigation.
Pin Color Palette
Click anywhere on the map to place a pin with the selected color.
Pins List (2)
Pin Drop Map Technical Specifications & Standards
WGS84 (EPSG:4326)
Standard global ellipsoidal coordinate reference system
Point Geodesics
Sub-meter click accuracy
GeoJSON · KML · CSV · SVG
Compatible with QGIS, ArcGIS, Google Earth & CAD
100% Client-Side
Calculations run in-browser. Zero coordinate logging.
How to Use the Pin Drop Map (Multi-Marker Creator)
Follow this step-by-step procedure to execute precise spatial measurements and export results.
- 1Click to drop pins: Click anywhere on the map or search an address to place numbered marker pins.
- 2Add custom titles and notes: Click any dropped pin to open its information card, set a custom title, assign a category color, or add notes.
- 3Reorder or drag markers: Drag markers to adjust locations, or reorder pins in the sidebar list.
- 4Export pin collection: Download your pin locations as a formatted CSV spreadsheet, GeoJSON FeatureCollection, or KML file.
Geodesic Precision vs. Competitor Mapping Approaches
Most legacy mapping utilities (such as CalcMaps and FreeMapTools) rely on planar Web Mercator projections or spherical approximations, causing significant mathematical distortion at higher latitudes. GeoMap Suite computes exact ellipsoidal geodesics on the WGS84 reference ellipsoid.
| Calculation Model | Mathematical Basis | Distortion on WGS84 | Standard Tools | Practical Application |
|---|---|---|---|---|
| Planar (Web Mercator) | Cartesian dx² + dy² | 10% to 200%+ error | CalcMaps / Simple map tools | Distorts drastically away from equator. Inaccurate for true distance. |
| Spherical Great-Circle | Haversine (R = 6,371 km) | Up to 0.5% (~5 km/1,000 km) | Basic Google Maps wrappers | Ignores Earth's polar flattening. Reasonable for rough estimates. |
| GeoMap Suite Ellipsoidal | Karney Direct/Inverse WGS84 | < 15 nanometers (<0.0001%) | GeoMap Suite | Geodetic surveying, maritime, flight paths & legal boundary analysis. |
Worked Example: Mapping 12 Real Estate Property Viewing Stops
A real estate buyer plots 12 prospective home addresses in Seattle for a weekend tour.
Input Parameters
- Markers
- 12 Sequential Pin Locations
- Details
- Address, Listing Price, Viewing Time
Computed Outputs
- Total Pins
- 12 Numbered Locations
- Coverage Area
- North Seattle to Bellevue
- Export Format
- Seattle_Tour.kml / CSV
Step-by-Step Mathematical Process
- Drop 12 pins sequentially by searching each street address.
- Assign custom pin colors based on property status (e.g. Blue = House, Green = Condo).
- Add scheduled viewing times in the notes field for each marker pin.
- Export KML to sync with mobile Google Earth app for driving navigation.
Understanding Your Results & Practical Interpretation
Sequential Pin Ordering & Numbering
Marker pins are automatically numbered in order of placement (1, 2, 3...), making them ideal for delivery itineraries, travel itineraries, and sequential field inspections.
Practical Applications & Real-World Use Cases
Travel Itinerary & Vacation Planning
Plot hotels, restaurants, attractions, and viewpoints for vacation planning.
Mathematical Methodology & Geodetic Accuracy
Point Geometry & Attribute Association
Marker pins are stored as discrete WGS84 point geometries with metadata dictionaries, rendered via MapLibre GL marker instances.
Marker = {id, lat, lng, title, color, notes, orderIndex}Limitations & Boundary Conditions
- •Marker state is saved in browser session memory until exported.
Authoritative Reference Standards
Troubleshooting & Geographic Edge Cases
How do I delete a single pin without clearing the entire map?
Click on the pin on the map or in the sidebar list, then click the "Delete Pin" button inside the popup card.
Frequently Asked Questions
Click anywhere on the map or search an address to place numbered marker pins. When finished, click "Export CSV" to download an Excel table with coordinates, or "Export KML" for Google Earth.