Using a for loop to plot multiple sets of data

Question

Kacey Lange 2022-7-27

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1769255-using-a-for-loop-to-plot-multiple-sets-of-data

评论： David Hill 2022-7-27

I am trying to use a for loop to plot multiple sets of data. My data matrix (fTSM) is 42x1 where I have six sets of data (corresponding to 6 weeks) from seven stations. The data is organized by the weeks the data was sampled, in order of the stations that are being sampled each week. I want to plot data each stations data in a time series, where the x-axis are the sampling weeks 1-6 and there will be seven lines in the graph corresponding to the seven stations. The for loop I have written is:

for k = 1:7:42
    PC = fTSM(k);
    PM = fTSM(k+1);
    TG = fTSM(k+2);
    SJ = fTSM(k+3);
    HP = fTSM(k+4);
    BL = fTSM(k+5);
    BB = fTSM(k+6);
    x = [1:7]';
    fprintf('%d: %s vs %s\n',k,PC,PM,TG,SJ,HP,BL,BB);
    h1=semilogy(x,[PC;PM;TG;SJ;HP;BL;BB],'LineWidth',1.5);
    ylim([0 110])
    xlim([1 7])
    hold on
    set(gca,'FontSize',20)
    legend({'PC','PM','TG','SJ','HP','BL','BB'},'location','northeast','FontSize',6);
    set(h1,'linewidth',1.5);
    xlabel('Sampling week','FontSize',20);
    ylabel('VSF (m^{-1} sr^{-1})','FontSize',20);
end

The outcome of this that there are six lines with seven weeks of data where the data is in order, instead of going to the next week of data. For example PC consists of fTSM(1:7) instead of fTSM(1,8,15,22,29,36) and PM consists of fTSM(8:14) instead of fTSM(2,9,16,23,30,37) and so on. This leaves out station BB in the graph.

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Dyuman Joshi 2022-7-27

在 MATLAB Online 中打开

There are only 6 sets of data and you get 6 lines in the plot as well.

1:7 , 8:14 , 15:21 , 22:28 , 29:35 , 36:42

And since your legend has 7 elements in it, it doesn't show the extra one(s) here.

Kacey Lange 2022-7-27

No there are six sets of data from seven stations.

1st station is fTSM(1,8,15,22,29,36)

2nd station is fTSM(2,9,16,23,30,37)

3rd station is fTSM(3,10,17,24,31,38)

4th station is fTSM(4,11,18,25,32,39)

5th station is fTSM(5,12,19,26,33,40)

6th station is fTSM(6,13,20,27,34,41)

7th station is fTSM(7,14,21,28,35,42)

I want all the stations to be separate lines with 6 data points in each, corresponding to the 6 weeks of data collection.

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Answer 1

David Hill 2022-7-27

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1769255-using-a-for-loop-to-plot-multiple-sets-of-data#answer_1016295

在 MATLAB Online 中打开

fTSM=reshape(fTSM,7,[])';
h1=semilogy(fTSM);
ylim([0 110])
xlim([1 7])
set(gca,'FontSize',20)
legend({'PC','PM','TG','SJ','HP','BL','BB'},'location','northeast','FontSize',6);
set(h1,'linewidth',1.5);
xlabel('Sampling week','FontSize',20);
ylabel('VSF (m^{-1} sr^{-1})','FontSize',20);