Creating SpatialGridDataFrame - unequal number of objects
Your example below is very hard to read. But if I understand it correctly, the following change, bike_df <- as.data.frame(as.vector(bike_mat)) may result in something that is syntactically correct; whether it does what you want is not clear from the context. Hth,
On 05/28/2011 06:18 PM, Chris English wrote:
Dear List: I have a SpatialGrid for which I am trying to make adata.frame and thence a SpatialGridDataFrame. I can't seem to get the size of data.frame and gridto match up. I assume I'm missing something straight forward. summary(grid1)Object of class SpatialGridCoordinates: min maxx 0.5 1824.5y 0.5 1368.5Is projected: NA proj4string : [NA]Number of points: 2Grid attributes: cellcentre.offset cellsize cells.dimx 1 1 1824y 1 1 1368> help(str)> bike_mat<- matrix(rep(1368:1, each=1824), ncol=1824, byrow=TRUE)> bike_df<- as.data.frame(bike_mat)> bike_sgdf_1<- SpatialGridDataFrame(grid1,bike_df)Error in validityMethod(object) : unequal number of objects in full grid and data slot Thank you for you assistance. Chris
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