Hatching a region between two functions

2011 7 17
2 个回答
回答已采纳
11 次查看（30 天）

0 个投票

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.

请先登录，再回答此问题。

 采纳的回答

Andrew Newell
Andrew Newell 2011-7-18

1 个投票

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.

4 个评论
显示 2更早的评论 隐藏 2更早的评论

Jan
Jan 2011-7-18
There are a lot of hatching tools in the FEX, just search for "hatch".
Sean de Wolski
Sean de Wolski 2011-7-18
http://www.mathworks.com/matlabcentral/fileexchange/

请先登录，再进行评论。

更多回答（1 个）

Sean de Wolski
Sean de Wolski 2011-7-18

1 个投票

And what do you know - a selection of hatch functions were selected for Pick of the Week this past weak!
Blogs: POTW

类别

在 帮助中心 和 File Exchange 中查找有关 Logical 的更多信息

产品

标签

Community Treasure Hunt

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

Start Hunting!

Translated by