Hatching a region between two functions

Question

mortain 2011-7-17

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/11780-hatching-a-region-between-two-functions

Hello,

I have a set of data, I calculated the min and the max and the average and then I want to plot the average and hatch the area which is between max and min.

I attach here the data, the process for creating the function superior, inferior and average.

I found a way in the MuPad but I do not know it and I would like to use the Matlab.

If someone has any suggstions or ideas, please let me know.

Cheers, Antonio

for the sake of simpleness, in the table attached the first column is absscissa, the second the minimum the third is maximum which take respectively the names X as the abscissas F as the minimum, G as the maximum

hold on;
pF=polyfit(X,F,9);     pG=polyfit(X,G,9);  
f=polyval(pF,X);       g=polyval(pG,X);
plot(X,F,'o',X,f,'-')  plot(X,G,'o',X,g,'-')
    -0.0105856  0.0567304  0.304696
    -0.0109566  0.0541681  0.29648
    -0.0114274  0.0527631  0.285055
    -0.0119611  0.0526772  0.280862
    -0.0124948  0.0509386  0.271505
    -0.0130284  0.0504875  0.27002
    -0.0135621  0.0479437  0.263591
    -0.0140958  0.0464733  0.260301
    -0.0146442  0.0436699  0.251154
    -0.0152616  0.0419518  0.249578
    -0.0159151  0.0403968  0.246156
    -0.0165686  0.0376205  0.232884
    -0.0172221  0.0358952  0.228482
    -0.0178756  0.0347101  0.226353
    -0.0185054  0.0337404  0.222677
    -0.0191351  0.0328784  0.220499
    -0.0197648  0.0321577  0.217536
    -0.0203945  0.0310619  0.214267
    -0.0210243  0.0287334  0.210937
    -0.021654  0.0265714  0.207631
    -0.0222837  0.0245878  0.204379
    -0.0229134  0.0227951  0.201215
    -0.0235431  0.0211813  0.198121
    -0.0241729  0.0197453  0.195137
    -0.0248026  0.018475  0.192246
    -0.0254323  0.0173415  0.189424
    -0.026062  0.0163494  0.186684
    -0.0266917  0.0154906  0.18404
    -0.0273215  0.0147535  0.181488
    -0.0279512  0.0141141  0.179007
    -0.0285809  0.0135698  0.176605
    -0.0292106  0.0131054  0.174274
    -0.0298404  0.0127084  0.172007
    -0.0304701  0.0123768  0.169787
    -0.0310998  0.0121053  0.167632
    -0.0317295  0.0118886  0.165537
    -0.0323592  0.0117176  0.163502
    -0.032989  0.0115901  0.161514
    -0.0336187  0.0115108  0.159586
    -0.0342484  0.0114732  0.157709
    -0.0348781  0.0114712  0.155865
    -0.0355079  0.0114983  0.154072
    -0.0361376  0.011561  0.152337
    -0.0367673  0.0116436  0.150637
    -0.037397  0.01174          0.148972
    -0.0380267  0.0118431  0.147328
    -0.0386565  0.0119501  0.145712
    -0.0392862  0.0120604  0.144137
    -0.0399159  0.0121648  0.142596
    -0.0405456  0.012252  0.141086
    -0.0411754  0.0123101  0.139615
    -0.0418051  0.0123372  0.138163
    -0.0424348  0.012314  0.136731
    -0.0430645  0.0122229  0.13533

I need to plot the hatch between the minimum and the maximum.

Thank you very much.

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Answer 1

Andrew Newell 2011-7-18

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/11780-hatching-a-region-between-two-functions#answer_16098

在 MATLAB Online 中打开

To fill the region between lines with a color, you could use a command like

patch([x; flipud(x)],[f; flipud(g)],'r')

The reason for the flipud is to make a round trip around the surface by going forwards on the bottom and backwards on the top.

If you would rather the fill be a hatch pattern, you'll need to download one of the File Exchange packages like Hatch fill patterns plus plus and read the documentation.