search for: overstory

Does someone out there have an example of R-code for a split-split plot ANOVA using aov or another function? The design is not balanced. I never set up one in R before and it would be nice to see an example before I tackle a very complex design I have to model. Thanks, Mike Mike Saunders Research Assistant Forest Ecosystem Research Program Department of Forest Ecosystem Sciences University of

Hi all, I am using ftable and xtabs to get total counts of species per location per hight category (understory, midstory and overstory). i can save the data in almost the format i would like it to be - but not quite. Here it is an example of what i get: x - is a dataframe with the following columns: LocationID, Species, PercentCover, Category where Category tells if the Species belongs to understory, midstory or overstory y1...

Hi all, I am using ftable and xtabs to get total counts of species per location per hight category (understory, midstory and overstory). i can save the data in almost the format i would like it to be - but not quite. Here it is an example of what i get: x - is a dataframe with the following columns: LocationID, Species, PercentCover, Categorywhere Category tells if the Species belongs to understory, midstory or overstory y1 <...

...in forestry. I am studying spatial pattern analysis of tree regeneration. My study design is a contiguous grid in which regeneration is completely sampled, and hopefully analyzed using surface pattern techniques. I am also interested in examining the relationship of the regeneration density with overstory trees, which have a GPS location, and I unsure of a technique or program in R which can accomplish this task. Can anyone provide some insight into this task. Cheers, Andrew Nelson -- View this message in context: http://www.nabble.com/Point-pattern---Surface-pattern-statistical-link-tp15362735p...

..._x_continuous(breaks=c(90, 180, 270, 360), labels=c('90', '180', '270', '360')) ### the scenario I am generating graphics to show the physical layout of a forestry research experiment. There are 54 'cut blocks' (64x64m, 0.4ha) each containing 1 circular 'overstory plot' (16m radius, 0.08ha). Each 'overstory plot' (oplt) contains 10 circular 'regeneration plots' (rplt) (0.56m radius, 1m^2 or 1.13m radius, 4m^2), these are the label data points plotted below, later to have the 1m^2 or 4m^2 rplt outline added. Later, each individual tree wil...

I want to take the first row of each unique ID value from a data frame. For instance > ddTable <- data.frame(Id=c(1,1,2,2),name=c("Paul","Joe","Bob","Larry")) I want a dataset that is Id Name 1 Paul 2 Bob > unique(ddTable) Will give me all 4 rows, and > unique(ddTable$Id) Will give me c(1,2), but not accompanied by the name column.