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Query about axes of graph created by plot function

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Erika Yoshikawa
Erika Yoshikawa 2021-2-9
评论： Star Strider 2021-2-10
If I have two variables A = [1 2 3] and B = [1 2 3], when I plot(A,B) I get a graph with 10 variables on both x and y axis with constant intervals between 1 and 3.
Is there a way where I can just get a graph with 3 values 1, 2 and 3 on both x and y axis?

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采纳的回答

Star Strider
Star Strider 2021-2-9
I am not certain what the original problem is with your plot.
Try this:
A = [1 2 3];
B = [1 2 3];
figure
plot(A, B)
Ax = gca;
Ax.XTick = A;
Ax.YTick = B;
.

更多回答（1 个）

Walter Roberson
Walter Roberson 2021-2-9
I suspect that you want to use xlim() and ylim()
  2 个评论
Erika Yoshikawa
Erika Yoshikawa 2021-2-9
Thank you for your answer. I think xlim() and ylim() limits the values on x and y axis, however it is not what I'm looking for.
When I enter the following:
A = [1 2 3]
B = [1 2 3]
plot(A,B)
I'm getting a graph which is shown in the screenshot:
I don't understand why matlab is changing the interval so there's 10 values on the x and y axes, but I just want 1, 2 and 3 on both x and y axis.
Walter Roberson
Walter Roberson 2021-2-9
MATLAB automatically chooses "nice" ticks. You can use xticks() and yticks() to choose different tick locations.

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