#Menyimpan Data dalam Variabel
simpan = c (10,20,40,15,40)
simpan
## [1] 10 20 40 15 40
simpan = c (1000,2000,3000,4000,5000)
simpan
## [1] 1000 2000 3000 4000 5000
#Mengakses Nilai Data dalam Variabel secara Individual
simpan = c (10,20,40,15,40)
simpan[3]
## [1] 40
simpan = c (10,20,40,15,40)
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 = c (10,20,40,15,40)
simpan
## [1] 10 20 40 15 40
simpan[3]=100
simpan[4]=10000
simpan
## [1] 10 20 100 10000 40
#Menghapus Nilai Data dalam Variabel
NILAI=c(10,40,45,30,80)
NILAI
## [1] 10 40 45 30 80
NILAI=NILAI[-3]
NILAI
## [1] 10 40 30 80
NILAI=NILAI[-4]
NILAI
## [1] 10 40 30
NILAI=NILAI[c(-1,-3)]
NILAI
## [1] 40
#Penggunaan Operator > (Lebih Besar Dari)
NILAI=c(100,95,70,80,25,60,80,60,55,90)
NILAI
## [1] 100 95 70 80 25 60 80 60 55 90
NILAI[NILAI>80]
## [1] 100 95 90
#Penggunaan Operator < (Lebih Kecil Dari)
NILAI=c(100,95,70,80,25,60,80,60,55,90)
NILAI
## [1] 100 95 70 80 25 60 80 60 55 90
NILAI[NILAI<70]
## [1] 25 60 60 55
#Penggunaan Operator & (Dan)
NILAI=c(100,95,70,80,25,60,80,60,55,90)
NILAI
## [1] 100 95 70 80 25 60 80 60 55 90
NILAI[NILAI>60&NILAI<80]
## [1] 70
#Penggunaan Operator | (Atau)
NILAI=c(100,95,70,80,25,60,80,60,55,90)
NILAI
## [1] 100 95 70 80 25 60 80 60 55 90
NILAI[NILAI>80 | NILAI<30]
## [1] 100 95 25 90
#Lebih Lanjut Penggunaan Operator < (Lebih Kecil Dari)
NILAI=c(100,95,70,80,25,60,80,60,55,90)
NILAI
## [1] 100 95 70 80 25 60 80 60 55 90
NILAI=NILAI[NILAI<75]
NILAI
## [1] 70 25 60 60 55
#Lebih Lanjut Penggunaan Operator > (Lebih Besar Dari)
NILAI=c(100,95,70,80,25,60,80,60,55,90)
NILAI
## [1] 100 95 70 80 25 60 80 60 55 90
NILAI=NILAI[NILAI>90]
NILAI
## [1] 100 95
#Contoh Sederhana Penggunaan dari Bahasa Pemrograman R
fungsi=function(x)
{
for(i in 1 : length(x))
{
if(x[i]<65)
{
x[i]=x[i]+10;
}
print(x[i])
}
return(x)
}
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
## [1] 100 95 70 80 35 70 80 70 65 90
#Jenis Data
#mode(1000)
mode(1000)
## [1] "numeric"
simpan=c(1000)
mode(simpan)
## [1] "numeric"
#mode(“HALO”)
mode("HAKI")
## [1] "character"
simpan=c("HALO")
mode(simpan)
## [1] "character"
#mode(d)
d=c(FALSE)
d
## [1] FALSE
a=c(T)
a
## [1] TRUE
mode(d)
## [1] "logical"
mode(a)
## [1] "logical"
#function
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=2+A
B
## [1] 3 4 5
A=c(2,4,6)
B=c(1,3,5)
B-A
## [1] -1 -1 -1
A=c(4,8,12)
A*0.5
## [1] 2 4 6
A=c(4,8,12)
B=c(2,2,2)
A/B
## [1] 2 4 6
A=c(3,6,1)
B=c(2,2,0)
A^B
## [1] 9 36 1
A=c(5,2,7)
B=c(3,2,6)
C=A%%B
C
## [1] 2 0 1
#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
a=sqrt(81)
a
## [1] 9
b=sqrt(a)
b
## [1] 3
#fungsi max dan min
A=c(10,25,90,75,95,57)
max(A)
## [1] 95
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
options(digits=10)
pi
## [1] 3.141592654
#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
panggil=function(x,y,z)
{
a=x;
print(a);
for(i in x : z)
{
a=a+y;
if(a>z)
{
break;
}
print(a);
}
}
panggil(2,3,30)
## [1] 2
## [1] 5
## [1] 8
## [1] 11
## [1] 14
## [1] 17
## [1] 20
## [1] 23
## [1] 26
## [1] 29
seq(2,30,3)
## [1] 2 5 8 11 14 17 20 23 26 29
#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
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)
barplot(table(A))
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))
