How to condense this code for plotting cdfs? How to use a for loop to plot lines.

Question

Macy 2023-2-27

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1920120-how-to-condense-this-code-for-plotting-cdfs-how-to-use-a-for-loop-to-plot-lines

评论： Macy 2023-2-28

randomdata.txt

Hello, I am new to MatLab and have a lot of code that I would like to condese/make easier to plot. The following code makes one subplot (I am going to eventually make 20 plots consisting of 4 subplots each). My question is, how can I condense the part of the code where I make the actual plot? I am wondering if I can use a forloop.

Also, my instructor defined the line and color for each plot ("plot_colors","plot_lines"), but I'm not sure how to use it in the code. I just set colors and line styles again at the end.

I may need to repost the question with more data so you can see the complete plot, I don't know if I made it more confusing or less.

clear all;

close all;

dataout = load('randomdata.txt');

%group data into 5 equal groups

n_groups=5;

[n_rows, n_cols] = size(dataout);

end_group=round((1:n_groups)*(n_rows)/n_groups);

start_group = [1, end_group+1];

start_group = start_group(1:n_groups);

plot_colors = ["k"; "r";"g";"r";"g"]; %Not sure what is the point of these next four lines?

plot_lines = ["-"; "-";"-";"--";"--"];

parnames = {'Column 1','Column 2','Column 3'}%... %String array of parameter names...There are 20 total

errornames = {'Column 21' 'Column 22' 'Column 23' 'Column 24'}; %String array of errors names, 4 total

%select the data for the first subplot

par_column = 1; %for now just column 1, there are 20 total

error_column = 2; %this .txt file doesn't have all the data so this really would be column 21. There are 4 total.

group = 1; %could I use this in a for loop later somehow?

[~,idx] = sort(dataout(:,error_column), 'descend');

dataout_sort = dataout(idx,:);

%From here on, would you condense this code any further?

%Make one subplot

tiledlayout(2,2)

nexttile

fig_handle = cdfplot(dataout_sort(start_group(group):end_group(group),par_column));

set(fig_handle, 'LineStyle', '-', 'Color', 'k');

%What is the point of fig_handle? Is it because it is a subplot or to set the style

%and color?

hold on

group2_handle = cdfplot(dataout_sort(start_group(2):end_group(2),par_column));

group3_handle = cdfplot(dataout_sort(start_group(3):end_group(3),par_column));

group4_handle = cdfplot(dataout_sort(start_group(4):end_group(4),par_column));

group5_handle = cdfplot(dataout_sort(start_group(5):end_group(5),par_column));

set(group2_handle, 'LineStyle', '-', 'Color', 'r');

set(group3_handle, 'LineStyle', '-', 'Color', 'g');

set(group4_handle, 'LineStyle', '--', 'Color', 'r');

set(group5_handle, 'LineStyle', '--', 'Color', 'g');

%end

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Answer 1

Cameron 2023-2-28

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1920120-how-to-condense-this-code-for-plotting-cdfs-how-to-use-a-for-loop-to-plot-lines#answer_1181300

在 MATLAB Online 中打开

tiledlayout(2,2)
nexttile
hold on
for xx = 1:n_groups
    h = cdfplot(dataout_sort(start_group(xx):end_group(xx),par_column));
    h.LineStyle = plot_lines(xx);
    h.Color = plot_colors(xx);
end
hold off