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Viewer guide

1. Drop COPC LAZ, regular LAZ or LAS files or a folder into the viewer, or choose files or a folder on your computer. The viewer reads file data locally. Regular LAZ opens more slowly.
2. Combined clouds should already use the same coordinate system and units: the viewer does not reproject or align them. Drag to orbit, right-drag to pan and scroll to zoom. Use Fit 3D, 2D top or Side to change the view.
3. Choose a colour mode, ramp and optional limits. Adjust point size, opacity, brightness, background and point budget. Expand Classes to hide classes or change their colours. Counts describe loaded points.
4. For COPC-only selections, filter loaded points by GPS-time seconds from the earliest reported COPC minimum. Time filtering and colouring are unavailable when regular LAS/LAZ is included.
5. Open or drop a 360° equirectangular JPEG, PNG or WebP. Drag to look around and scroll to zoom; switch back to Point cloud when finished. The panorama is a separate image and is not automatically aligned with the cloud.

Large files and folders

The point budget limits the preview. COPC-only selections load visible nodes from coarse levels first and update when the camera moves. Mixed selections that include regular LAS/LAZ use a fixed preview; their first node may exceed the budget. Files share one budget so some may be omitted. Higher budgets and regular LAZ files use more memory; reduce the budget if the browser slows down. Regular compressed LAZ files above 1.2 GB are rejected. Folder drag depends on browser support; use Choose a folder as an alternative.

No classification editing, measurement, export, automatic photo alignment or boresight adjustment is included.

Settings, overview and sections

Use Hide settings and Settings to collapse or reopen the controls. On a phone the panel hides after loading. The collapsible Overview shows the cloud extent and camera direction. Under Section and crop, enter a corridor width, choose Draw section, and tap two points in the top view. The profile plots distance against height for loaded preview points. Crop to section hides points outside the corridor; Clear section and crop restores them. The crop does not modify the file. Camera movement can change which points are loaded, so this is not a full-resolution survey result.

AHN example and attribution

The optional example is GeoTiles AHN1 sub-tile 34GN1_01 near Ruwenhof and Neede, converted to COPC using PDAL. Credit: AHN (Stuurgroep AHN, public data), Beeldmateriaal (aerial image, CC BY), remixed by GeoTiles (CC BY); the COPC conversion is a further modification. Source and licence details. It is downloaded from this website only when you choose the example.