converting vector result into matrices for surf command

11 次查看（过去 30 天）
fima v
fima v 2022-11-20
评论： Star Strider 2022-11-22
Hello,in a program there is feald on aplane shown bellow.
the field data was exports and i am trying to recreate this fiels in matlab.
I have a problem where the exported tablable is show in the attached file ,the resulthas a vector as a result.
in surf command i needthe IMAGEEy result be a matrix
its folding every 24 members.
how can i recreate the photo of the progrm thanks?
I tried the photo shown bellow and it gave me gibrish
rows=(with.zmm==48.394400000000000);
data=with(rows,:);
x=data.xmm(1:24);
y=data.ymm;
y2=y(1:24:240);
z=reshape(data.EyImVm,24,[]);
[yy,xx]=meshgrid(x,y2)
surf(xx',yy',z)

请先登录，再回答此问题。

回答（2 个）

Walter Roberson
Walter Roberson 2022-11-20
Ran in:
filename = 'https://www.mathworks.com/matlabcentral/answers/uploaded_files/1200898/with.txt';
with = readtable(filename);
with.Properties.VariableNames = {'xmm', 'ymm', 'zmm', 'ExReVm', 'ExImVm', 'EyReVm', 'EyImVm', 'EzReVm', 'EzImVm'};
rows = ismembertol(with.zmm,48.394400000000000);
data = with(rows,:);
x = data.xmm(1:24);
y = data.ymm;
y2 = y(1:24:240);
z = reshape(data.EyImVm,24,[]);
[yy, xx] = meshgrid(x, y2);
surf(xx',yy',z)
xlabel('x'); ylabel('y'); zlabel('EyImVm');
  1 个评论
fima v
fima v 2022-11-21
Hello i ineed to plot the Z-X surface data at Y=-11.340800000000000
how can wec cut in this plane?
Thanks.

请先登录，再进行评论。

Star Strider
Star Strider 2022-11-20
Ran in:
I have no idea what you want to plot.
Use the first two column (that correspond to ‘x’ and ‘y’ respectively), the choose whatever other column you want, and use scatter3 to plot them. m There is no need to reshape them.
T1 = readtable('https://www.mathworks.com/matlabcentral/answers/uploaded_files/1200898/with.txt')
T1 = 10560×9 table
Var1 Var2 Var3 Var4 Var5 Var6 Var7 Var8 Var9 _______ _______ ______ ________ ________ _______ _______ _________ ________ -48.384 -11.341 10.996 0.90813 1.8604 -37.911 -79.726 -2.0314 -3.5672 -46.047 -11.341 10.996 0.61978 1.2805 -36.158 -76.018 -0.69598 -0.80282 -43.709 -11.341 10.996 0.39263 0.83229 -35.522 -74.668 0.27129 1.1548 -41.372 -11.341 10.996 0.83176 1.7557 -35.755 -75.141 0.99512 2.5929 -39.034 -11.341 10.996 0.13691 0.29173 -35.001 -73.53 2.5863 5.8309 -36.697 -11.341 10.996 -0.57036 -1.1999 -35.671 -74.939 1.8947 4.2114 -34.36 -11.341 10.996 -0.98216 -2.0772 -39.062 -82.094 -1.6248 -3.4085 -32.022 -11.341 10.996 -1.0985 -2.3401 -45.176 -94.994 -7.9721 -17.029 -29.685 -11.341 10.996 3.0031 6.3116 -48.701 -102.43 -9.4638 -20.382 -27.348 -11.341 10.996 2.4817 5.2283 -41.237 -86.694 -3.1886 -7.3027 -25.01 -11.341 10.996 1.1922 2.5145 -36.242 -76.16 1.4338 2.3349 -22.673 -11.341 10.996 0.22708 0.4812 -34.936 -73.407 2.2261 3.9499 -20.335 -11.341 10.996 -0.32721 -0.67962 -34.818 -73.17 1.827 3.1152 -17.998 -11.341 10.996 -0.41435 -0.88218 -34.896 -73.346 1.5551 2.6268 -15.661 -11.341 10.996 -0.51603 -1.11 -35.857 -75.404 0.60022 0.71022 -13.323 -11.341 10.996 -0.41121 -0.89323 -37.957 -79.868 -0.086691 -0.62588
x = T1{:,1};
y = T1{:,2};
z = T1{:,3};
Eyv = T1{:,6};
figure
scatter3(x, y, z, 10, z, 'filled')
grid on
colormap(turbo)
view(30,20)
figure
scatter3(x, y, Eyv, 10, Eyv, 'filled')
grid on
colormap(turbo)
view(30,20)
Experiment to get the desired result.
.
  6 个评论
显示 4更早的评论
Walter Roberson
Walter Roberson 2022-11-22
A line, maybe? Constant z and constant y over a source that is a grid of data would still leave open the possibility of a line graph, EyImVm vs x ?
Star Strider
Star Strider 2022-11-22
Certainly! Although some sort of scatter plot is at the base of this. The surface — if one exists — evolves from that. I just don’t understand how to get there from the provided data.

请先登录，再进行评论。

类别

在 Help Center 和 File Exchange 中查找有关 Data Distribution Plots 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