Skip to content
GitLab
Projects
Groups
Snippets
/
Help
Help
Support
Community forum
Keyboard shortcuts
?
Submit feedback
Contribute to GitLab
Sign in
Toggle navigation
Menu
Open sidebar
Habitat Sampler
HabitatSampler
Commits
f5b1bf63
Commit
f5b1bf63
authored
Sep 14, 2021
by
Romulo Pereira Goncalves
Browse files
Indentation
parent
df769519
Changes
1
Hide whitespace changes
Inline
Side-by-side
R-package/R/model_opt.r
View file @
f5b1bf63
...
...
@@ -146,9 +146,12 @@ model_opt_r <- function(k,
width
=
buffer
,
byid
=
TRUE
)
test1
<-
na.omit
(
raster
::
as.matrix
(
fasterize
::
fasterize
(
sf
::
st_as_sf
(
poly
),
rast
[[
1
]])
*
rast
))
nam
<-
as.vector
(
fasterize
::
fasterize
(
sf
::
st_as_sf
(
poly
),
rast
[[
1
]],
field
=
"V1"
))[
-
attr
(
test1
,
"na.action"
)]
test1
<-
na.omit
(
raster
::
as.matrix
(
fasterize
::
fasterize
(
sf
::
st_as_sf
(
poly
),
rast
[[
1
]])
*
rast
))
nam
<-
as.vector
(
fasterize
::
fasterize
(
sf
::
st_as_sf
(
poly
),
rast
[[
1
]],
field
=
"V1"
))[
-
attr
(
test1
,
"na.action"
)]
co
<-
raster
::
xyFromCell
(
rast
,
c
(
1
:
raster
::
ncell
(
rast
))[
-
attr
(
test1
,
"na.action"
)])
pbtn1
<-
as.data.frame
(
cbind
(
nam
,
co
))
sp
::
coordinates
(
pbtn1
)
<-
c
(
"x"
,
"y"
)
...
...
@@ -166,33 +169,37 @@ model_opt_r <- function(k,
}
######################################
###balancing sample size
di
<-
c
(
sum
(
pbtn1
@
data
$
nam
==
1
),
sum
(
pbtn1
@
data
$
nam
==
2
))
di
<-
c
(
sum
(
pbtn1
@
data
$
nam
==
1
),
sum
(
pbtn1
@
data
$
nam
==
2
))
if
(
abs
(
di
[
1
]
-
di
[
2
])
>
min
(
di
)
*
0.3
)
{
if
(
which.min
(
di
)
==
2
)
{
set.seed
(
seed
)
d3
<-
sample
(
which
(
pbtn1
@
data
$
nam
==
1
),
di
[
1
]
-
di
[
2
],
replace
=
F
)
d3
<-
sample
(
which
(
pbtn1
@
data
$
nam
==
1
),
di
[
1
]
-
di
[
2
],
replace
=
F
)
pbtn1
<-
pbtn1
[
-
d3
,
]
test1
<-
test1
[
-
d3
,
]
}
else
{
set.seed
(
seed
)
d4
<-
sample
(
which
(
pbtn1
@
data
$
nam
==
2
),
di
[
2
]
-
di
[
1
],
replace
=
F
)
d4
<-
sample
(
which
(
pbtn1
@
data
$
nam
==
2
),
di
[
2
]
-
di
[
1
],
replace
=
F
)
pbtn1
<-
pbtn1
[
-
d4
,
]
test1
<-
test1
[
-
d4
,
]
}
}
#####################################
###maximum sample size
if
(
sum
(
pbtn1
@
data
$
nam
==
1
)
>
max_samples_per_class
)
{
if
(
sum
(
pbtn1
@
data
$
nam
==
1
)
>
max_samples_per_class
)
{
set.seed
(
seed
)
dr
<-
sample
(
which
(
pbtn1
@
data
$
nam
==
1
),
sum
(
pbtn1
@
data
$
nam
==
1
)
-
max_samples_per_class
,
replace
=
F
)
sample
(
which
(
pbtn1
@
data
$
nam
==
1
),
sum
(
pbtn1
@
data
$
nam
==
1
)
-
max_samples_per_class
,
replace
=
F
)
pbtn1
<-
pbtn1
[
-
dr
,
]
test1
<-
test1
[
-
dr
,
]
}
if
(
sum
(
pbtn1
@
data
$
nam
==
2
)
>
max_samples_per_class
)
{
if
(
sum
(
pbtn1
@
data
$
nam
==
2
)
>
max_samples_per_class
)
{
set.seed
(
seed
)
dr
<-
sample
(
which
(
pbtn1
@
data
$
nam
==
2
),
sum
(
pbtn1
@
data
$
nam
==
2
)
-
max_samples_per_class
,
replace
=
F
)
sample
(
which
(
pbtn1
@
data
$
nam
==
2
),
sum
(
pbtn1
@
data
$
nam
==
2
)
-
max_samples_per_class
,
replace
=
F
)
pbtn1
<-
pbtn1
[
-
dr
,
]
test1
<-
test1
[
-
dr
,
]
}
...
...
Write
Preview
Supports
Markdown
0%
Try again
or
attach a new file
.
Cancel
You are about to add
0
people
to the discussion. Proceed with caution.
Finish editing this message first!
Cancel
Please
register
or
sign in
to comment