Creating a vector using conditions and a cell.

Question

Julen Aramendi 2021-7-15

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https://ww2.mathworks.cn/matlabcentral/answers/879413-creating-a-vector-using-conditions-and-a-cell

评论： Stephen23 2021-7-16

This is what I have in the workspace. I have 3 acceleration vectors (one column each): Ax (799x1 double), Ay(799x1 double) and Az(799x1 double). Also I have a cell called activities: activities (1x4 cell) with this code:

Activities={'Walking','Sitting','Standing','Laying'};

Walking=1;

Sitting=2;

Standing=3;

Laying=4;

What I want to do is to create another vector called "actid"(799x1 double) using this conditions:

if Ay>10

actid=1; %Walking

elseif Ay>5 & Ay<7.5

actid=2; %Sitting

elseif Ay<10 & Ay>9

actid=3; %Standing

elseif Ay<1 & Az>9

actid=4; %Laying

end

Running this code I can't get what I want.

I don't know if it is possible to do.

Thank you.

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Julen Aramendi 2021-7-16

First of all, thanks for answering me.

Yeah, it is intentional. Yesterday I didn't explain very well what I want. What I want is that depending the values of the acceleration in X(Ax), Y(Ay) and Z(Az) axles, know if the person is walking, sitting, standing or laying. For that reason, in that case I don't need the acceleration in the axis X because with the other two acceleration axis (Y and Z) is enough.

I don't understand what you want to say with "operate on the entire vectors". Can you give me a simple example?

Thank you.