Hi I need to calculate threshold value for growing degree days http://en.wikipedia.org/wiki/Growing-degree_day
(we used that in our paper: Neteler, M., Roiz, D., Rocchini, D., Castellani, C. and Rizzoli, A. (2011). Terra and Aqua satellites track tiger mosquito invasion: modeling the potential distribution of Aedes albopictus in north-eastern Italy. International Journal of Health Geographics, 10:49 http://www.ij-healthgeographics.com/content/10/1/49 ) The existing implementation has been reverted last year, but how to do that now? I have to find out at which DOY in a pixel a certain value has been reached. Input are all single daily GDD maps of the year. So far I used r.series with threshold and count. Another usage scenario: count all days over a certain temperature pixelwise... ? Markus _______________________________________________ grass-dev mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/grass-dev
