Portrait recommended
For the best experience on a phone, rotate your device to portrait orientation.
Welcome to Gettysburg Viewshed
©
gettysburgviewshed.com. All rights reserved.
Instructions
About this Project
Use Policy
Status:
Profile ready. Draw or drag endpoints to update.
Controls
Graph
Line-of-Sight Settings
Observer height (m):
Target height (m):
Visibility riser (m):
Fan Viewshed Settings
Fan radius (km):
Fan rays count:
Fan rays min = 180, max = 720.
Actions
Draw Line
Export / Print
Viewshed
Rasterize
Street View
Clear All
Marker Coordinates
LOS Observer (O):
—
LOS Target (T):
—
Viewshed Observer (V):
—
Map Overlay Settings
Opacity:
Raster grain (px):
High-confidence visible
High-confidence not visible
(Colors blend between red↔green based on confidence)