How can I merge my data set based on the time in MATLAB?

Question

Tania Islam 2021-1-25

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/726058-how-can-i-merge-my-data-set-based-on-the-time-in-matlab

评论： Tania Islam 2021-1-26

I want to merge the two data into one. But as they are in two different times that's why I cannot just combine them.

I need to add them by keeping the time as it is. How can I do this?

data_1_y_axes=[0,1,3,5,4,6,8,9,7]
time_1_x_axes=[.02,0.03,.05,.06,.07,0.08,0.09,.1,.2]
data_2_y_axes=[0,2,4,5,2,7,5,7,5]
time_2_x_axes=[.002,0.004,.006,.009,.02,0.04,0.06,.07,.09]
plot(time_1_x_axes,data_1_y_axes)
hold on
plot(time_2_x_axes,data_2_y_axes)

My expected data will be as follows:

New_data=[ 0, 2,4,5,2+0,1,7,3,5+5,7+4,6,5+8,9,7]
New_time=[.002,.004,.006,.009,.02,.03,.04,.05,.06,.07,.08,.09,.1,.2]

How can I do this?

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Answer 1

KSSV 2021-1-25

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链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/726058-how-can-i-merge-my-data-set-based-on-the-time-in-matlab#answer_605528

在 MATLAB Online 中打开

data_1_y_axes=[0,1,3,5,4,6,8,9,7] ;
time_1_x_axes=[.02,0.03,.05,.06,.07,0.08,0.09,.1,.2] ;
data_2_y_axes=[0,2,4,5,2,7,5,7,5] ;
time_2_x_axes=[.002,0.004,.006,.009,.02,0.04,0.06,.07,.09] ;
plot(time_1_x_axes,data_1_y_axes)
hold on
plot(time_2_x_axes,data_2_y_axes)
x = [time_1_x_axes time_2_x_axes] ;
y = [data_1_y_axes data_2_y_axes] ;
[x,idx] = sort(x) ;
y = y(idx) ;
plot(x,y)

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Tania Islam 2021-1-26

在 MATLAB Online 中打开

data_1_y_axes = [0,1,3,5,4,6,8,9,7];
time_1_x_axes = [0.02,0.03,0.05,0.06,0.07,0.08,0.09,0.1,0.2];
data_2_y_axes = [0,2,4,5,2,7,5,7,5];
time_2_x_axes = [0.002,0.004,0.006,0.009,0.02,0.04,0.06,0.07,0.09];
Data_Vector = [data_1_y_axes data_2_y_axes];
Time_Vector = [time_1_x_axes time_2_x_axes];
Unique_Times = unique(Time_Vector);
for Sample_Index = 1: length(Unique_Times)
    Time_Value = Unique_Times(Sample_Index);
    Indices_With_Matching_Time = find(Time_Vector == Time_Value);
    Output_Data(Sample_Index) = sum(Data_Vector(Indices_With_Matching_Time));
end
plot(Unique_Times,Output_Data);