how to show difference between two plotted data in graph ?

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Engineer Batoor khan mummand 2020-10-22

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https://ww2.mathworks.cn/matlabcentral/answers/622243-how-to-show-difference-between-two-plotted-data-in-graph

评论： Image Analyst 2020-10-22

Hi all:

i plotted two series of data in graph now i want to differentiate between two graphs so i want to know difference of these two graphs in ploting by numerical data .

i mean what difference come between these two graphs it will show me numerically in graph .

d=[120 234 499 324 567 343 550 405 600 700]

m=[123 456 789 456 765 867 989 675 867 433]

figure

plot(d)

hold on

plot(m)

xlabel('solar radition ')

ylabel('haat gain')

legend('heat gain')

title('uuseful heat gain')

thanks in advance

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采纳的回答

Mario Malic 2020-10-22

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/622243-how-to-show-difference-between-two-plotted-data-in-graph#answer_521133

在 MATLAB Online 中打开

Do you mean difference by this?

c = m-d
plot(c)

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Mario Malic 2020-10-22

I do not know how to check documentation for 2017a, so, please check your text function, if 'HorizontalAlignment', 'center' is a valid option and check if string(c) outputs 1x10 string array.

Image Analyst 2020-10-22

在 MATLAB Online 中打开

Try this:

d = [120 234 499 324 567 343 550 405 600 700]
m = [123 456 789 456 765 867 989 675 867 1000]
plot(d, '-', 'LineWidth', 2)
hold on
plot(m, '-', 'LineWidth', 2)
grid on;
differences = m - d;
xCenter = 1:1:length(m);
yCenter = (m+d)/2;
for k = 1 : length(xCenter)
	textLabel = sprintf('%.1f', differences(k));
	text(xCenter(k), yCenter(k), textLabel, 'HorizontalAlignment', 'center')
end
xlabel('Solar Radiation ')
ylabel('Heat gain')
legend('d', 'm', 'Location', 'south')
title('Useful Heat Gain')

Note that the differences are vertical. It doesn't make any sense to have a slanted difference line (between two different time points) like you had.

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类别

MATLAB Graphics 2-D and 3-D Plots Discrete Data Plots

在 Help Center 和 File Exchange 中查找有关 Discrete Data Plots 的更多信息

产品

MATLAB

版本

R2017a

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