There is anyway that I can plot a graph like this in MatLab with standard deviation ?

1 次查看（过去 30 天）
Vitor
Vitor 2023-9-6
编辑： MarKf 2023-9-12
  2 个评论
MarKf
MarKf 2023-9-6
Likely yes.
Not sure tho what you mean with "stadard deviation". As in, you can easily calculate it with stdev = std(data) and you can visualize it in the graph with text (btw, also not sure what Y = 10,657 x 10,222 means), but do you mean SError? do you want the std of the data visualized (like errorbars on the points)? do you want to use std as a variable (like y, and then do a regression on that)? or you want to have the residuals plotted? or do you want the confidence bounds of the regression?
You can do all that and more.
Vitor
Vitor 2023-9-6
I wanna errobars on the points with this middle line, but I don t know the function that I have to use

请先登录，再进行评论。

请先登录，再回答此问题。

回答（2 个）

Image Analyst
Image Analyst 2023-9-6
Do you mean like the "errorbar" LinePlot shown about half way down the page here:
https://www.mathworks.com/products/matlab/plot-gallery.html
MarKf
MarKf 2023-9-6
编辑：MarKf 2023-9-12
Ran in:
n = 15; x = randn(n,1); y = randn(n,1);
sx = std(x); sy = std(y); %maybe non-randn data will have smaller std
lregsrts = regstats(y,x,'linear'); %edit: y first in this function
betal = lregsrts.beta; [X, ixd] = sort(x); %fitlm would be faster, but you can find that example everywhere
Y = ones(size(X))*betal(1) + betal(2)*X;
scatter(x,y,50,'kd','filled'); %diamonds (romboids, kites) as in OP figure
hold on
plot(X,Y,'k','LineWidth',3);
errorbar(x,y,sx,'k','horizontal')
errorbar(x,y,sy,'k')
annotation('textbox',[.15 .2 .1 .1] ,'string',...
['R^2 = ' num2str(lregsrts.rsquare) newline 's_x = ' num2str(sx)...
newline 's_y = ' num2str(sy)],'LineStyle','none') %also text
box on, grid on, set(gca, 'YGrid', 'on', 'XGrid', 'off'), hold off% as in OP figure
Edit: This is what was asked but I feel that this is not what they wanted anyway, it's redundant and uncommon. Typical errorbars on a line of data e.g. obtained by averagin (but then not a regression, unless it's not std) it'd be more likely.

类别

在 Help Center 和 File Exchange 中查找有关 Errorbars 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by