Hi,
to get Matrix B (B contains every row of A that meet all conditions) use:
B = A(A(:,1)>xlo & A(:,1)<xhi & A(:,2)>ylo & A(:,2)<yhi & A(:,3)>zlo & A(:,3)<zhi,:)
see this example with random numbers:
xlo = 0;
xhi = 100;
ylo = 0;
yhi = 100;
zlo = 0;
zhi = 100;
A = randi(200,25,3);
B = A(A(:,1)>xlo & A(:,1)<xhi & A(:,2)>ylo & A(:,2)<yhi & A(:,3)>zlo & A(:,3)<zhi,:);
results in:
A =
105 140 43
25 41 77
36 134 6
142 89 95
167 87 67
7 36 196
152 39 112
192 124 170
69 54 82
128 112 93
69 189 166
44 143 199
158 136 105
145 192 186
56 156 148
117 122 114
85 190 194
19 12 165
5 54 192
99 198 130
56 155 76
68 96 96
58 137 183
35 84 3
80 77 32
B =
25 41 77
69 54 82
68 96 96
35 84 3
80 77 32
Deleting rows in A which not meet the conditions gives the same result by using or instead of and:
A(A(:,1)<=xlo | A(:,1)>=xhi | A(:,2)<=ylo | A(:,2)>=yhi | A(:,3)<=zlo | A(:,3)>=zhi,:) = []
Result keeps the same - so removing lines in A is not needed to achieve what you want:
A =
25 41 77
69 54 82
68 96 96
35 84 3
80 77 32
Best regards
Stephan
