Re: [gdal-dev] grid from point dataset without interpolation

2010-01-27 Thread Frank Warmerdam
Matthew, I am not aware of a utility that reads ascii point data and directly creates a grid file without any attempt to interpolate. You could take a couple approaches. One is to write a script in a language like Python that will do the task and write the result out to a GDAL supported grid for

[gdal-dev] grid from point dataset without interpolation

2010-01-27 Thread Matthew Snape
Hi, I have a set of points in a shapefile that represent gridded height data. I would like to convert them to a raster without using any interpolation, merely using each point as the centre of a cell. I have tried using gdal_grid with the nearest algorithm but this appears very slow. Is there