Displaying 6 results from an estimated 6 matches for "overstori".
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overstory
2005 Feb 01
4
Split-split plot ANOVA
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
2008 Jan 09
0
formating ftable
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
2008 Jan 10
0
formatting ftable
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
2008 Feb 08
1
Point pattern - Surface pattern statistical link
Hi,
I am a graduate student at the University of Maine 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,
2008 Jun 04
1
ggplot questions
Hello,
A few questions about the following examples:
1. Why do the two plotting versions not produce the same result?
2. Is the 'scale_x_continuous' (or *_y_* or *_*_discrete) geom the best
way to setup grids (as in visual guide-lines) in polar (or for that
matter, any) coordinate system?
3. Why do these commands appear to generate 3 plot pages each?
4. Perhaps more questions to follow
2008 Jun 06
6
Subsetting to unique values
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.