basic plotting showing input needed as char

%linear
clc
x=2:5:10;
subplot(2,5,1)
y=sin(x)
subplot(2,5,2)
plot(x,y)
subplot(2,5,3)
stem(x,y)
subplot(2,5,4)
stairs(x,y)
subplot(2,5,5)
bar(x,y)
subplot(2,5,6)
hist(y)
subplot(2,5,7)
comet(x,y)
subplot(2,5,8)
contour(x,y)
subplot(2,5,9)
pie(x,y)
subplot(2,5,10)
area(x,y)
%log
hold
subplot(1,3,1)
loglog(x,y)
subplot(1,3,2)
semilog(y)
subplot(1,3,3)
semilog(x)
%polar
hold
polar(x,y)

error -------------------- ??? Undefined function or method 'linear_log_ploar_all' for input arguments of type 'char'.