ZEROS(N) is an N-by-N matrix of zeros.
ZEROS(M,N) or ZEROS([M,N]) is an M-by-N matrix of zeros.
ZEROS(M,N,P,...) or ZEROS([M N P ...]) is an M-by-N-by-P-by-... array of
zeros.
ZEROS(SIZE(A)) is the same size as A and all zeros.
ZEROS with no arguments is the scalar 0.
ZEROS(M,N,...,CLASSNAME) or ZEROS([M,N,...],CLASSNAME) is an
M-by-N-by-... array of zeros of class CLASSNAME.
2. ones
ONES(N) is an N-by-N matrix of ones.
ONES(M,N) or ONES([M,N]) is an M-by-N matrix of ones.
ONES(M,N,P,...) or ONES([M N P ...]) is an M-by-N-by-P-by-... array of ones.
ONES(SIZE(A)) is the same size as A and all ones.
ONES with no arguments is the scalar 1.
ONES(M,N,...,CLASSNAME) or ONES([M,N,...],CLASSNAME) is an
M-by-N-by-... array of ones of class CLASSNAME.
3. stem
STEM Discrete sequence or "stem" plot.
STEM(Y) plots the data sequence Y as stems from the x axis terminated with
circles for the data value. If Y is a matrix then each column is plotted as a separate
series.
STEM(X,Y) plots the data sequence Y at the values specified in X.
STEM(...,'filled') produces a stem plot with filled markers.
STEM(...,'LINESPEC') uses the linetype specified for the stems and markers.
STEM(AX,...) plots into axes with handle AX. Use GCA to get the handle to the