how to store a value in the next row?
3 Ansichten (letzte 30 Tage)
Ältere Kommentare anzeigen
i want to extract the coordinates for a squar plate having length of 1m. i want to divide into 25 smaller square whose lenth is 0.2. so that i will get an array of (25,2).
x1=0; x2=1;
y1=0; y2=1;
del=0.2;
step=zeros(25,2);
for y=y1:del:y2;
for x=x1:del:x2;
step=[x y]
end
end
what i am getting from this program is
step =
0 0
step =
0.2000 0
step =
.4000 0
step =
0.6000 0
.............................
step =
1 1
what im actually want is
step= 0 0
0 0.2
0 0.4
. .
. .
1 1
i want to store the value in the next row for the next loop.
0 Kommentare
Antworten (1)
Stephen23
am 3 Sep. 2020
Bearbeitet: Stephen23
am 3 Sep. 2020
The MATLAB approach:
>> [X,Y] = ndgrid(0:0.2:1);
>> M = [Y(:),X(:)]
M =
0.00000 0.00000
0.00000 0.20000
0.00000 0.40000
0.00000 0.60000
0.00000 0.80000
0.00000 1.00000
0.20000 0.00000
0.20000 0.20000
0.20000 0.40000
0.20000 0.60000
0.20000 0.80000
0.20000 1.00000
0.40000 0.00000
0.40000 0.20000
0.40000 0.40000
0.40000 0.60000
0.40000 0.80000
0.40000 1.00000
0.60000 0.00000
0.60000 0.20000
0.60000 0.40000
0.60000 0.60000
0.60000 0.80000
0.60000 1.00000
0.80000 0.00000
0.80000 0.20000
0.80000 0.40000
0.80000 0.60000
0.80000 0.80000
0.80000 1.00000
1.00000 0.00000
1.00000 0.20000
1.00000 0.40000
1.00000 0.60000
1.00000 0.80000
1.00000 1.00000
3 Kommentare
Stephen23
am 4 Sep. 2020
Bearbeitet: Stephen23
am 4 Sep. 2020
"but it shows ...Error: Invalid use of operator."
Lets have a look:
>> [X,Y] = ndgrid(0:0.2:1);
>> M = [Y(:),X(:)] % my code (no spaces, no error)
M =
0 0
0 0.2000
... more lines here
1.0000 0.6000
1.0000 0.8000
1.0000 1.0000
>> M = [Y (:),X (:)] % your code (add spaces -> error)
M = [Y (:),X (:)]
↑
Error: Unexpected MATLAB operator.
>>
Siehe auch
Kategorien
Mehr zu Get Started with MATLAB finden Sie in Help Center und File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!