Import survey points
Start with CSV, TXT, GeoJSON, KML, KMZ, GPX, or supported Shapefile data.
Online TIN Surface Generator for Survey Data
Generate a TIN surface from survey point data, inspect it in 2D and 3D, and prepare supported outputs when they fit the next task.
See the surface behind the points
Point files alone can make terrain review slow. TopoAssist helps teams generate contours and the associated TIN surface in a focused browser workspace.
How TopoAssist helps
Inspect in context
Inspect generated contours and the related TIN surface using 2D and 3D views.
Prepare supported outputs
Prepare CAD, GIS, LandXML, or PDF outputs as supported by current access.
For practical survey workflows
This page supports survey professionals and project teams that need a reviewable surface from field points. Confirm source-data quality and coordinate-system information, and retain professional verification for engineering decisions.
Read what a TIN surface is, see features, or review pricing.
FAQ
Can I inspect results in 3D?
The current workspace includes 2D and 3D views for generated survey results.
Does a surface replace professional review?
No. Review remains important because results depend on source data and coordinate-system settings.