MATLAB: Simple integration calculation to find the area

integrationnumerical integrationrandom number generator

I had a 30 min time step vector T(48*1) values T=[30 60 90 ……..1440], and another vector V(48*1) having some values. I want to find out the integration of vector V over vector T in the given range?

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trapz(T,V)

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MATLAB: Simple calculations

Perhaps you're looking for

res = diff(n1)./diff(n2); %?

MATLAB: Simple arithmetic calculation question

Well the error is pretty obvious. The following lines is using parenthesis incorrectly:

data.Q02=str2double(((datastr(75:80))/10000)) - data.Q0;
data.Qx2=str2double(((datastr(81:86))/10000)) - data.Qx;
data.Qy2=str2double(((datastr(87:92))/10000)) - data.Qy;
data.Qz2=str2double(((datastr(93:98))/10000)) - data.Qz;
data.Tx2=str2double(((datastr(99:105))/100)) - data.Tx;
data.Ty2=str2double(((datastr(106:112))/100)) - data.Ty;
data.Tz2=str2double(((datastr(113:119))/100)) - data.Ty;

You want to place your parenthesis so str2double operates only on the datastr() and not the divide by.

data.Q02=str2double(datastr(75:80))/10000 - data.Q0;
data.Qx2=str2double(datastr(81:86))/10000 - data.Qx;
data.Qy2=str2double(datastr(87:92))/10000 - data.Qy;
data.Qz2=str2double(datastr(93:98))/10000 - data.Qz;
data.Tx2=str2double(datastr(99:105))/100 - data.Tx;
data.Ty2=str2double(datastr(106:112))/100 - data.Ty;
data.Tz2=str2double(datastr(113:119))/100 - data.Ty;

HTH

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MATLAB: Simple calculations

MATLAB: Simple arithmetic calculation question

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