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How to plot the line of best fit?

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Khalil
Khalil 2013-4-29
评论： PRANAY CHOWDARY 2019-8-9
%Project Design %Yellow Band Displacemnt=[0 4 8 12 16 20 24 28 32]; Force = [0 .23 .36 .43 .52 .64 .78 .85 .92]; plot(Displacemnt, Force, 'x') title ('Displacement vs Force'); xlabel('Displacement'); ylabel('Force'); grid zoom on
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Khalil
Khalil 2013-4-29
polyfit(displacement, force, 1)
is not working.
Shashank Prasanna
Shashank Prasanna 2013-4-29
Please format your code using the Code button when you post

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采纳的回答

Shashank Prasanna
Shashank Prasanna 2013-4-29
What do you mean when you say it is not working? Do you get an error?
D = [0 4 8 12 16 20 24 28 32];
F = [0 .23 .36 .43 .52 .64 .78 .85 .92];
plot(D,F,'.b')
p = polyfit(D,F,1)
f = polyval(p,D);
hold on
plot(D,f,'--r')
Is that something you are looking for?
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Justin Keener
Justin Keener 2016-10-28
Is there any way to get the approximation returned when the y axis is crossed?
PRANAY CHOWDARY
PRANAY CHOWDARY 2019-8-9
its fine, can you give explanatin

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wasif saeed
wasif saeed 2017-6-3
is this possible that we can display slope equation on graph .. i have 251 plot of data by a loop than i draw best fit line from every graph now i need intercept and gradient of each graph on plotting.
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Image Analyst
Image Analyst 2017-6-3
Yes. Use sprintf() to create a string with the equation in it. Then use text() to place that text onto the graph/plot wherever you want it.

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