...Just read you JPEG and add an alpha channel manually, then assign values for transparency. Of course for printing you need to use a device that accepts alpha.See how it's done HERE.
Posts Tagged ‘ as.raster() ’
Using IUCN-Data, ArcMap 9.3 and R to Map Species Diversity
..I'm overwhelmed by the ever-growing loads of data that's made available via the web. I.e., IUCN collects and hosts spatial species data which is free for download. I'm itching to play with all this data... And, in the end there may arise ...
Yet Another One.. Animation with saveHTML / saveVideo from Package ANIMATION
...some more playing with saveHTML, as.raster() and rasterImage(), producing a "flickering screen":Read more »
Zero Inflated Models and Generalized Linear Mixed Models with R.
Zuur, Saveliev, Ieno (2012).
