Hello,
I have a dataframe that contains information about vegetation cover and
percent coverage, collected using a quadrat. The dataframe is set up so
that each row represents a single quadrat. If there are multiple species
within one quadrat, they are all listed within the same row with respective
% coverage always following in next column. Here is an example, species
are represented as 4 letter codes:
Quadrat_#
Date
Species_1
Species_2
covrage2
Species_3
covrage3
1
5/2/2017
unk1
2
bial
6
stgu
95
2
5/2/2017
bope
75
stja
4
ficy
9
3
5/2/2017
bope
100
stja
5
4
5/2/2017
stgu
87
stja
6
bope
20
5
5/2/2017
bg
13
stja
2
ficy
10
6
5/2/2017
bope
8
sirh
3
stgu
2
The problem is that the species were not recorded in any particular order,
and not all species occur in every quadrat. There can also be any number
of species per quadrat. I need to be able to extract each species AND it’s
respective coverage, and place them in into another dataframe for further
analysis
So the result for “bope” from above example data would look like this:
Quadrat#
% coverage bope
1
0
2
75
3
100
4
20
5
0
6
8
Any help greatly appreciated.
Brian
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