Problem with filling a variable inside loops

1 次查看（过去 30 天）
Hamid
Hamid 2022-8-5
评论： Hamid 2022-8-10
Dear experts,
I have 3 loops as shown in the code and want to find elements of t_p but the hmd variable is empty and not filling correctly.
When I use commad window and for example set (i=10,j=10,k=10) the command works and the desired values are obtained.
The purpose of my code is to find the values for t_p that are within a specefic x,y,z range.
Many Thanks in advance.
p = readtable ('pnts.txt');
p = table2array(p);
x_p=p(:,2);
y_p=p(:,3);
z_p=p(:,4);
t_p=p(:,5);
xedges=-100:10:100;
yedges=-100:10:100;
zedges=0:10:200;
for i = 1:length(xedges)-1
for j = 1:length(yedges)-1
for k = 1:length(zedges)-1
hmd = t_p((xedges(i)<= x_p) & (x_p < xedges(i+1)) & ((yedges(j)<= y_p) & (y_p < yedges(j+1))) & ((zedges(k)<= z_p) & (z_p < zedges(k+1))));
end
end
end

请先登录，再回答此问题。

采纳的回答

VBBV
VBBV 2022-8-6
编辑：VBBV 2022-8-6
Ran in:
p = readtable ('pnts.txt');
p = table2array(p);
x_p=p(:,2);
y_p=p(:,3);
z_p=p(:,4);
t_p=p(:,5);
xedges=-100:10:100;
yedges=-100:10:100;
zedges=0:10:200;
for i = 1:length(xedges)-1
for j = 1:length(yedges)-1
for k = 1:length(zedges)-1
hmd = t_p((xedges(i)>= x_p) & (x_p <= xedges(i+1)) & ((yedges(j)>= y_p) & (y_p <= yedges(j+1))) & ((zedges(k)>= z_p & (z_p) <= zedges(k+1))));
end
end
end
hmd
hmd = 6109×1
0.1449 0.0674 2.0756 0.0145 0.0492 0.0313 0.6017 0.0109 0.0477 0.0680
According to condition given inside the for loop the number of points will vary, It appears for this data, it is 6109x1 matrix

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Creating and Concatenating Matrices 的更多信息

标签

产品


版本

R2022a

Community Treasure Hunt

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

Start Hunting!

Translated by