How to plot from array

Hello

I am trying to plot a XY 2D graph but stuck in geeting array values. I have defined my x=10:1:20

and y values are the result obtained from the array. The Y values (lets say) are obtained from the following

n=1

for i=1:10

RESULT(n,:) = (Y)

end

I am getting Y values as [12 24 36 48 60 72 84 96 108]

using these as Y points and X as 10:1:20, i want to plot XY graph.

Kindly help.

Thanks

[Stephen23]

You have nine Y values and eleven X values: how do you expect to plot them together?

>> Y = [12 24 36 48 60 72 84 96 108]
Y =
    12    24    36    48    60    72    84    96   108
>> X = 10:20
X =
    10    11    12    13    14    15    16    17    18    19    20
                                                          ^^^^^^^^ What Y values ?

Answer 1

[madhan ravi]

X=10:20;
Y = [12 24 36 48 60 72 84 96 108];
plot(X(1:numel(Y)),Y)

Alternatively

Y = [12 24 36 48 60 72 84 96 108];
X=linspace(10,20,numel(Y));  % to match the sizes of X and Y 
plot(X,Y)

[Nikhil Gakkhar]

Hello Ravi,

When I am usign this code, there are some issue:

a) The values of Y are in matrix array, so it is not taking the values

and so

b) the graph is with no points

If i had Y =[12 24 36 48 60 72 84 96 108], then it is working fine.

But I am getting y as a result of some equation.

So i got value of Y as one of column in matrix.

RESULT(n,:) = (Y)

Can you help me, how to retreive that column from matrix which i have got?

[madhan ravi]

if Y is a matrix then Y(:,1) retrieves first column likewise for the rest

[Nikhil Gakkhar]

Thanks.

I got it now.

Just in case, Y(:,1) i want to omit first two row of column so that X and Y would be of same size

how to do that?