Re: [gdal-dev] Call for discussion on RFC 51: RasterIO() improvements : resampling and progress callback

2014-11-25 Thread Mike Toews
On 25 November 2014 at 05:34, Even Rouault even.roua...@spatialys.com wrote: Otherwise I have not much to say about this RFC. Blurring has two r's, Fixed Gaussian blur also has another complexity, since it's output dimensions depend on the fftconvolve mode (using scipy.signal docs

Re: [gdal-dev] Call for discussion on RFC 51: RasterIO() improvements : resampling and progress callback

2014-11-25 Thread Even Rouault
Mike, The gaussian resampling is the one already available for gdaladdo, that was added per http://trac.osgeo.org/gdal/ticket/2137 and http://trac.osgeo.org/gdal/changeset/15323 Basically : - for a downscaling of factor between 1 and 2 (and for upscaling as well), it will use a 3x3 kernel -

[gdal-dev] Call for discussion on RFC 51: RasterIO() improvements : resampling and progress callback

2014-11-24 Thread Even Rouault
Hi, This is a call for discussion on a new RFC : RFC 51 RasterIO() improvements : resampling and progress callback http://trac.osgeo.org/gdal/wiki/rfc51_rasterio_resampling_progress Below the summary : This RFC aims at extending the RasterIO() API to allow specifying a resampling algorithm

Re: [gdal-dev] Call for discussion on RFC 51: RasterIO() improvements : resampling and progress callback

2014-11-24 Thread Jukka Rahkonen
Even Rouault even.rouault at spatialys.com writes: Hi, This is a call for discussion on a new RFC : RFC 51 RasterIO() improvements : resampling and progress callback http://trac.osgeo.org/gdal/wiki/rfc51_rasterio_resampling_progress Below the summary : This RFC aims at extending

Re: [gdal-dev] Call for discussion on RFC 51: RasterIO() improvements : resampling and progress callback

2014-11-24 Thread Even Rouault
Jukka, Gdaladdo seems to lose some resampling algorithms. Ah, the text of the RFC wasn't clear enough. Bilinear, cubicspline and lanczos are *additional* algorithms to the existing ones. The damage with average_mp can't be big by reading the comment from the gdaladdo manual page