how to store a value in the next row?

3 Ansichten (letzte 30 Tage)
VENGATESAN S
VENGATESAN S am 3 Sep. 2020
Bearbeitet: Stephen23 am 4 Sep. 2020
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.

Antworten (1)

Stephen23
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
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.
>>
VENGATESAN S
VENGATESAN S am 4 Sep. 2020
thanks for your support..now it is working

Melden Sie sich an, um zu kommentieren.

Kategorien

Mehr zu Get Started with MATLAB finden Sie in Help Center und File Exchange

Produkte


Version

R2018b

Community Treasure Hunt

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

Start Hunting!

Translated by