Questions tagged [thin-plate-splines]

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How to use a temperature raster (e.g., PRISM) to constrain temperature values in a thin plate spline regression and interpolation

I have point data with temperature, latitude, longitude, and elevation. I am interpolating across space to the extent of those points, and have been using elevation as a covariate in the fields::Tps. ...
0
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0answers
56 views

What is the difference between using interpolate() and predictSurface() on a thin plate spline regression?

I have a set of points (not evenly distributed across space), which have location (lat and long), temperature, and elevation. I want to interpolate/create a raster from those points that have ...
1
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0answers
37 views

How to georeference images with GCP's in straight line?

I would like to use the Thin Plate Spline tranformation type in the QGIS georeferencer plugin. The image I'm trying to georeference is a sequence of aerial images which have been merged manually. I ...
3
votes
2answers
1k views

Calculate accuracy of georeferencing

I'm working on georeferencing old maps for archaeological purpose. Of course, colonial maps all do have some degree of transformation needed. But sometimes a specific region is well mapped while the ...
8
votes
1answer
296 views

ogr2ogr TPS spline method creates progressive error

I am trying to adjust a shapefile using ogr2ogr spline transformation with cmd commands like: C:\OSGeo4W64\bin\ogr2ogr.exe -f "ESRI Shapefile" C:\path\output.shp -tps --optfile C:\path\gcp.txt C:\...
2
votes
0answers
268 views

failed gdal script from QGIS Georeferencer using Thin Plate Spline (TPS)

I'm trying to georeference a photo using QGIS Georeferencer plugin (this is an oblique photograph. I know I should be using a proper georectification routine, but my current work now is just to simply ...
5
votes
1answer
1k views

Cross-validation of TPS and kriging outputs from the fields package in R

I am looking for existing package or functions that will allow me to cross-validate multiple outputs of Thin plate spline (TPS) and Kriging from the fields package. Does anyone know of any available ...