Interpolation & surfaces
IDW, kriging, TIN and variograms — turning scattered samples into a surface, with its support attached.
Everything on Spatial Workflow about interpolation & surfaces, in the order that usually works: understand the idea, then run the task, then fix it when it goes wrong. 13 guides in total.
One learning path runs through this topic — follow it if you would rather work through a route than pick a single guide.
🧭 Start with the concepts
The ideas the how-to guides below assume you already have.
- Spatial Interpolation Explained: Guessing Between the Samples spatial interpolation explained
- Sample Design Explained: Where to Measure sample design explained
- The Variogram Explained: How Far Does a Measurement Reach variogram explained
- IDW, Kriging, Splines or TIN? Choosing an Interpolator choosing an interpolator explained
⚙️ Then do the task
Step-by-step walkthroughs with code you can copy and adapt.
- How to Interpolate Points to a Grid with IDW in Python idw interpolation python
- How to Fit a Variogram and Krige a Surface in Python kriging python
- How to Build a TIN and Interpolate Elevations tin interpolation python
- How to Cross-Validate an Interpolated Surface cross validate interpolation python
- How to Choose a Cell Size for an Interpolated Surface choose cell size interpolation
- How to Interpolate to Polygons Instead of a Grid areal interpolation python
🔧 When it breaks
The errors this topic produces, with the cause explained rather than just the command.
Learning paths through this topic
A curated route rather than a list — the guides in the order that builds on itself.
Related topics
Subjects that keep coming up alongside this one, most overlap first.