What Barry says is completely correct: the landsat package (not Landsat), is not currently compatible with the format used by the raster package, only with sp classes or base R object types. You can convert the raster objects, or use the rgdal package to import your tifs as SGDFs.
And as I told you in private email, the landsat package was developed pre-Landsat 8, and has not been updated for the new data source. Both raster compatibility and Landsat 8 support are in the works, but will not be available in the very near future. Sarah On Tue, Aug 12, 2014 at 12:25 PM, Barry Rowlingson <b.rowling...@lancaster.ac.uk> wrote: > Instructions say (help(histmatch)) > > > Arguments: > > master: The target image, in SpatialGridDataFrame, data frame, matrix > or vector format. > > tofix: The image to be normalized, in any format. > > but what you have is a *raster* object, not a SpatialGridDataFrame, or > any other of those. > > You can convert a raster, r, to a SpatialGridDataFrame, rg: > > > rg = as(r,"SpatialGridDataFrame") > > and then feed those to histmatch. You probably have to convert both arguments. > > Barry > > > > On Tue, Aug 12, 2014 at 4:45 PM, sarah crabbe <sarah_cra...@yahoo.com> wrote: >> Dear all, >> >> We are trying to apply a histogram matching on cloudmasked landsat 8 images, >> with the intention to fill the clouds. >> Therefore we want to use the package "Landsat" >> >> We tried to import two bands with the package "raster": >> >> image1<-raster("LC82280562013211LGN00_B1.tif") >> image2<-raster("LC82280562013227LGN00_B1.tif") >> >> whereafter we try to apply a histogram matching with the landsat package: >> >> histmatch(image1, image2, minval=0, maxval= 65535, by=1) >> >> And we get following error: >> >> Error in as.vector(data) : >> no method for coercing this S4 class to a vector >> >> This might be easy to solve, but we just started to learn how to work with R >> for image processing, So could we please get some advice on this.. >> Many thanks >> Sarah -- Sarah Goslee http://www.functionaldiversity.org _______________________________________________ R-sig-Geo mailing list R-sig-Geo@r-project.org https://stat.ethz.ch/mailman/listinfo/r-sig-geo