regarding machine learning onramp

2020 5 24
3 个回答
更新时间：2024 11 10
12 次查看（30 天）

0 个投票

sir i am stuck at module 3.3 of machine learning onramp course at task 1.
please do help me to continue with the course.

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回答（3 个）

VISHAL
VISHAL 2020-5-30

2 个投票

letterds = datastore("*_M_*.txt");
data = read(letterds);
data = scale(data);
plot(data.X,data.Y)
axis equal
plot(data.Time,data.Y)
ylabel("Vertical position")
xlabel("Time")
function data = scale(data)
data.Time = (data.Time - data.Time(1))/1000;
data.X = 1.5*data.X;
end
Logesh B
Logesh B 2022-1-1

0 个投票

preprocds = transform(letterds,@scale)

6 个评论
显示 4更早的评论 隐藏 4更早的评论

Naethan Smith
Naethan Smith 2022-2-12
It keeps coming up with an error message when I enter that code into task 2, is there an alternative code?
Tinghui
Tinghui 2022-8-19
I echo the same question. It keeps saying " does the variable preprocds exist?"
Jose
Jose 2024-2-13
same here. Has someone managed to overcome this message?
Image Analyst
Image Analyst 2024-2-13
编辑：Image Analyst 2024-2-13
See https://www.mathworks.com/matlabcentral/answers/682853-machine-learning-onramp-module-3-3-task-3?s_tid=answers_rc1-3_p3_Topic
What is the link for the on-ramp course. If I call it up can I jump to that question or do I have to do all the prior tasks before getting to that?

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Sudharshan
Sudharshan 2024-11-10

0 个投票

function data = scale(data)
data.Time = (data.Time - data.Time(1))/1000;
data.X = 1.5*data.X;
data.X = data.X - mean(data.X);
data.Y = data.Y - mean(data.Y);
end

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