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lzht1986

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2Â¥: Originally posted by bucheron at 2014-02-11 00:41:18
errorbar(X,Y,E) X,Y,E ±ØÐëΪͬÐͲÎÁ¿¡£ÈôͬΪÏòÁ¿,Ôò»­³ö´ø³¤¶ÈΪ 2*E(i)¡¢¶Ô ³ÆÎó²î°ôÓÚÇúÏßµã(X(i),Y(i))Ö®´¦;ÈôͬΪ¾ØÕó,Ôò»­³ö´ø³¤¶ÈΪ E(i,j)¡¢ ¶Ô³ÆÎó²î°ôÓÚÇúÃæµã(X(i,j),Y(i,j))Ö®´¦

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4Â¥2014-02-11 01:00:09
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bucheron

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lzht1986: ½ð±Ò+10 2014-02-27 14:21:26
errorbar(X,Y,E) X,Y,E ±ØÐëΪͬÐͲÎÁ¿¡£ÈôͬΪÏòÁ¿,Ôò»­³ö´ø³¤¶ÈΪ 2*E(i)¡¢¶Ô ³ÆÎó²î°ôÓÚÇúÏßµã(X(i),Y(i))Ö®´¦;ÈôͬΪ¾ØÕó,Ôò»­³ö´ø³¤¶ÈΪ E(i,j)¡¢ ¶Ô³ÆÎó²î°ôÓÚÇúÃæµã(X(i,j),Y(i,j))Ö®´¦

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Born to suffer !Born to burn!
2Â¥2014-02-11 00:41:18
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lzht1986

гæ (СÓÐÃûÆø)

Ëͺ컨һ¶ä
ÒýÓûØÌû:
2Â¥: Originally posted by bucheron at 2014-02-11 00:41:18
errorbar(X,Y,E) X,Y,E ±ØÐëΪͬÐͲÎÁ¿¡£ÈôͬΪÏòÁ¿,Ôò»­³ö´ø³¤¶ÈΪ 2*E(i)¡¢¶Ô ³ÆÎó²î°ôÓÚÇúÏßµã(X(i),Y(i))Ö®´¦;ÈôͬΪ¾ØÕó,Ôò»­³ö´ø³¤¶ÈΪ E(i,j)¡¢ ¶Ô³ÆÎó²î°ôÓÚÇúÃæµã(X(i,j),Y(i,j))Ö®´¦

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3Â¥2014-02-11 00:52:43
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bucheron

½ð³æ (СÓÐÃûÆø)

ÒýÓûØÌû:
4Â¥: Originally posted by lzht1986 at 2014-02-11 01:00:09
ÆäʵÎÒ»¹ÊÇû¿´¶®£¬ÎÒÊÇÐÂÊÖ¡£ÕâλÈÊÐÖÄܲ»ÄܰïÎÒ±à¸ö¾ßÌåÀý×ӵĴúÂë°¡£¡Ð»Ð»ÄãÀ²
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function Fcn_test
clear all
close all
clc

%------------------------
% one example of surface
[X,Y] = meshgrid(-2:.2:2, -2:.2:2);
Z = X .* exp(-X.^2 - Y.^2);  

%---------------------

eb_id=      [1,1;...
            17,6];  % errorbar index of X Y coordinates
        
x_eb_id=X(eb_id(:,1));  % X coordinates of the points with errorbars
y_eb_id=Y(eb_id(:,2));  % Y coordinates of the points with errorbars
for i=1:length(x_eb_id)
    z_eb_id(i)=Z(eb_id(i,2),eb_id(i,1));    % Z coordinates of the points with errorbars
end
eb_E=[0.2,0.2];                             % Error              

figure
surf(X,Y,Z)
hold on
plot3_errorbars_surf(x_eb_id,y_eb_id,z_eb_id,eb_E);

%-----------------------------------------------

function [h]=plot3_errorbars_surf(x, y, z, e)
% this matlab function plots 3d data using the plot3 function
% it adds vertical errorbars to each point symmetric around z
% I experimented a little with creating the standard horizontal hash
% tops the error bars in a 2d plot, but it creates a mess when you
% rotate the plot
%
% x = xaxis, y = yaxis, z = zaxis, e = error value

% create the standard 3d scatterplot
hold on;
h=plot3(x, y, z, '.k');

% looks better with large points
set(h, 'MarkerSize', 25);
hold on

% now draw the vertical errorbar for each point
for i=1:length(x)
        xV = [x(i); x(i)];
        yV = [y(i); y(i)];
        zMin = z(i) + e(i);
        zMax = z(i) - e(i);

        zV = [zMin, zMax];
        % draw vertical error bar
        h=plot3(xV, yV, zV, '-k');
        set(h, 'LineWidth', 2);
end
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Born to suffer !Born to burn!
5Â¥2014-02-11 02:00:07
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