simpan = c(10, 20, 40, 15, 40)
simpan
## [1] 10 20 40 15 40
simpan1 = c(1000, 2000, 3000, 4000, 5000)
simpan1
## [1] 1000 2000 3000 4000 5000
simpan = c(10, 20, 40, 15, 40)
# Mengakses nilai data secara individual
simpan[3]
## [1] 40
simpan[4]
## [1] 15
simpan[c(1, 3, 4)]
## [1] 10 40 15
simpan[2:4]
## [1] 20 40 15
# Mengubah nilai data dalam variabel
simpan[3] = 100
simpan[4] = 10000
# Menghapus nilai data dalam variabel
NILAI = c(10, 40, 45, 30, 80)
NILAI = NILAI[-3]
NILAI = NILAI[-4]
NILAI = NILAI[c(-1, -3)]
# Penggunaan Operator > (Lebih Besar Dari)
NILAI = c(100, 95, 70, 80, 25, 60, 80, 60, 55, 90)
NILAI[NILAI > 80]
## [1] 100 95 90
# Penggunaan Operator < (Lebih Kecil Dari)
NILAI[NILAI < 70]
## [1] 25 60 60 55
# Penggunaan Operator & (Dan)
NILAI[NILAI > 60 & NILAI < 80]
## [1] 70
# Penggunaan Operator | (Atau)
NILAI[NILAI > 80 | NILAI < 30]
## [1] 100 95 25 90
# Lebih Lanjut Penggunaan Operator <
NILAI = NILAI[NILAI < 75]
# Lebih Lanjut Penggunaan Operator >
NILAI = NILAI[NILAI > 90]
# Contoh Sederhana Penggunaan Bahasa Pemrograman R
# Nilai yang lebih kecil dari 65 ditambah dengan 10
fungsi = function(x) {
for(i in 1:length(x)) {
if(x[i] < 65) {
x[i] = x[i] + 10
}
print(x[i])
}
}
A = c(100, 95, 70, 80, 25, 60, 80, 60, 55, 90)
fungsi(A)
## [1] 100
## [1] 95
## [1] 70
## [1] 80
## [1] 35
## [1] 70
## [1] 80
## [1] 70
## [1] 65
## [1] 90
# Jenis data R
# Numerik
mode(1000)
## [1] "numeric"
simpan = c(1000)
mode(simpan)
## [1] "numeric"
# Character
mode("halo")
## [1] "character"
simpan = c("halo")
mode(simpan)
## [1] "character"
# Logika
d = c(F)
d
## [1] FALSE
a = c(T)
a
## [1] TRUE
mode(d)
## [1] "logical"
mode(a)
## [1] "logical"
# Contoh pembuatan fungsi kuadrat
kuadrat = function(x) {
print(x * x)
}
A = c(4)
kuadrat(A)
## [1] 16
mode(kuadrat)
## [1] "function"
# Operator Penjumlahan +, Pengurangan -, Perkalian *,
# Pembagian /, Pangkat ^, Sisa %%
A = c(1, 2, 3)
B = c(4, 5, 6)
C = A + B
C
## [1] 5 7 9
A = c(1, 2, 3)
B = c(4, 5, 6)
B - A
## [1] 3 3 3
A = c(1, 2, 3)
A * 0.5
## [1] 0.5 1.0 1.5
A = c(1, 2, 3)
B = c(4, 5, 6)
C = A / B
C
## [1] 0.25 0.40 0.50
A = c(1, 2, 3)
B = c(4, 5, 6)
C = A ^ B
C
## [1] 1 32 729
A = c(1, 2, 3)
B = c(4, 5, 6)
C = A %% B
C
## [1] 1 2 3
# Fungsi length
A = c(100, 70, 80, 55, 80, 70, 80)
length(A)
## [1] 7
# Fungsi sort
A = c(70, 80, 50, 25, 100, 60)
sort(A)
## [1] 25 50 60 70 80 100
# Fungsi diff
A = c(100, 50, 70, 80, 60)
diff(A)
## [1] -50 20 10 -20
# Fungsi sum
A = c(50, 60, 70, 80)
sum(A)
## [1] 260
# Fungsi sqrt
sqrt(81)
## [1] 9
# Fungsi max dan min
A = c(10, 25, 90, 75, 95, 57)
max(A)
## [1] 95
A = c(10, 25, 90, 75, 95, 57)
min(A)
## [1] 10
# Fungsi exp
exp(1)
## [1] 2.718282
exp(2)
## [1] 7.389056
# Fungsi pi
pi
## [1] 3.141593
# Fungsi options
options(digits = 3)
pi
## [1] 3.14
# Fungsi seq
seq(from = 1, to = 10)
## [1] 1 2 3 4 5 6 7 8 9 10
seq(from = 2, by = 0.5, length.out = 4)
## [1] 2.0 2.5 3.0 3.5
# Fungsi table
A = c(10, 10, 30, 10, 30, 10, 10, 40, 40,
70, 90, 70, 80, 60, 60, 90)
table(A)
## A
## 10 30 40 60 70 80 90
## 5 2 2 2 2 1 2
table(A) / length(A)
## A
## 10 30 40 60 70 80 90
## 0.3125 0.1250 0.1250 0.1250 0.1250 0.0625 0.1250
# Data character
hasil = c("ya", "tidak", "ya", "ya", "ya",
"ya", "tidak", "ya", "tidak", "ya")
table(hasil)
## hasil
## tidak ya
## 3 7
table(hasil) / length(hasil)
## hasil
## tidak ya
## 0.3 0.7
# Fungsi factor
A = c("ikan", "ikan", "udang", "ikan",
"udang", "ikan", "ikan", "udang")
factor(A)
## [1] ikan ikan udang ikan udang ikan ikan udang
## Levels: ikan udang
A = c("sarjana", "diploma", "sarjana", "pengangguran",
"sarjana", "diploma", "diploma", "pengangguran")
factor(A)
## [1] sarjana diploma sarjana pengangguran sarjana
## [6] diploma diploma pengangguran
## Levels: diploma pengangguran sarjana
# Fungsi barplot
A = c(10, 10, 10, 10, 20, 20,
30, 30, 30, 30, 30, 30)
barplot(table(A))
A = c(10, 10, 10, 10, 20, 20,
30, 30, 30, 30, 30, 30)
barplot(table(A) / length(A))
# Fungsi plot
A = c(10, 10, 10, 10, 10, 20, 20, 20, 30, 30, 40)
table(A)
## A
## 10 20 30 40
## 5 3 2 1
nilai = c(10, 20, 30, 40)
frekuensi = c(5, 3, 2, 1)
plot(nilai, frekuensi)
A = c(10, 10, 10, 10, 10, 20, 20, 20, 30, 30, 40)
plot(table(A))
