[GRASS-dev] spline interpolation over time series

2013-06-16 Thread Margherita Di Leo
Hi all! I need to analyse several MODIS in time, and calculate the temporal spline interpolation (for each pixel), then pick the values (date and value) on the spline function corresponding to percentiles 25, 50, 75, maximum, minimum and average. I know that with r.series I can get max, min and

Re: [GRASS-dev] spline interpolation over time series

2013-06-16 Thread Nikos Alexandris
Margherita Di Leo wrote: Hi all! I need to analyse several MODIS in time, and calculate the temporal spline interpolation (for each pixel), then pick the values (date and value) on the spline function corresponding to percentiles 25, 50, 75, maximum, minimum and average. I know that with

Re: [GRASS-dev] spline interpolation over time series

2013-06-16 Thread Sören Gebbert
Hi, Nikos is absolutely right, the ideal candidate for spline interpolation in time for raster maps is r.series.interp. There is no other module that performs temporal interpolation. Best regards Soeren 2013/6/16 Nikos Alexandris n...@nikosalexandris.net Margherita Di Leo wrote: Hi all!

Re: [GRASS-dev] spline interpolation over time series

2013-06-16 Thread Markus Metz
On Sun, Jun 16, 2013 at 8:50 PM, Sören Gebbert soerengebb...@googlemail.com wrote: Hi, Nikos is absolutely right, the ideal candidate for spline interpolation in time for raster maps is r.series.interp. There is no other module that performs temporal interpolation. r.hants does temporal

Re: [GRASS-dev] spline interpolation over time series

2013-06-16 Thread Margherita Di Leo
Hi, On Sun, Jun 16, 2013 at 9:19 PM, Markus Metz markus.metz.gisw...@gmail.comwrote: On Sun, Jun 16, 2013 at 8:50 PM, Sören Gebbert soerengebb...@googlemail.com wrote: Hi, Nikos is absolutely right, the ideal candidate for spline interpolation in time for raster maps is

Re: [GRASS-dev] spline interpolation over time series

2013-06-16 Thread Markus Metz
On Sun, Jun 16, 2013 at 10:20 PM, Margherita Di Leo dileomargher...@gmail.com wrote: Hi, On Sun, Jun 16, 2013 at 9:19 PM, Markus Metz markus.metz.gisw...@gmail.com wrote: On Sun, Jun 16, 2013 at 8:50 PM, Sören Gebbert soerengebb...@googlemail.com wrote: Hi, Nikos is absolutely right,

Re: [GRASS-dev] spline interpolation over time series

2013-06-16 Thread Margherita Di Leo
On Sun, Jun 16, 2013 at 10:33 PM, Markus Metz markus.metz.gisw...@gmail.com wrote: On Sun, Jun 16, 2013 at 10:20 PM, Margherita Di Leo dileomargher...@gmail.com wrote: Thank you for all your inputs. Actually what I should do is not a proper interpolation but a regression That sounds