2D Line Interpolation(MORE)

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Muhammad Zafar Iqbal 2020-6-6

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/543269-2d-line-interpolation-more

编辑： darova 2020-6-13

在 MATLAB Online 中打开

First of all Thanks KSSV

I need some more help. As answered by KSSV

data = [36.97  126.5  36.79  126.45  394.94  1.79 
 36.98  126.4  36.79  126.45  179.59  0.75 
 37  126.65  36.55  126.64  82.64  0.35 
 37.4  127.21  37.35  126.7  379.76  1.53 
 34.75  127.17  34.4  126.7  172.95  0.73 
 37.45  126.82  37.89  126.77  401.29  1.6 
 36.98  126.4  37.08  126.77  1168.43  4.97 
 37.4  127.21  37.89  126.77  114.6  0.52 
 35.32  127.45  34.98  126.9  289.95  1.19 
 36.97  126.5  37.49  126.92  3462.07  15.01 
 37.16  127.52  37.49  126.92  151.54  0.61 
 37.4  127.21  37.49  126.92  167.04  0.69 
 37.16  127.52  37.49  126.92  240.72  1.01 
 36.2  127.48  36.27  126.92  235.94  0.95 
 36.35  127.2  36.27  126.92  155.95  0.63 
 35.27  127.42  35.49  126.93  1002.81  4.37 
 35.32  127.45  35.49  126.93  756.71  3.24 
 36.97  126.5  37.28  126.98  262.64  1.16 
 37.4  127.21  37.28  126.98  118  0.49 
 36.9  126.59  37.28  126.98  114.9  0.49 
 35.27  127.42  35.16  126.99  180.78  0.61 ] ;
 
 y1 = data(:,1) ; y2 = data(:,3) ; 
 x1 = data(:,2) ; x2 = data(:,4) ;
val = data(:,5) ; err = data(:,6) ; 
m = 100 ; 
xi = linspace(min(x1),max(x1),m) ;  
yi = linspace(min(y1),max(y1),m) ;  
[X,Y] = meshgrid(xi,yi) ; 
V = griddata(x1,y1,val,X,Y) ; 
pcolor(X,Y,V)
shading interp

Its working

I need more help

>>>>>> Need to consider errors as standard error for each value "err"

>>>>>> Need grid nodes values (each nod's value)

Thanks for your kind help.

Waiting

Regards

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John D'Errico 2020-6-6

Interpolation, since that is what you are asking about, has nothing to do with any assessment of error in your data. An interpolant always passes exactly through the data provided, so any errors are irrelevant.

Muhammad Zafar Iqbal 2020-6-8