Problem with filling a variable inside loops

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

Answer 1

[VBBV]

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

[Hamid]

@VBBV Thank you so much.