Extracting data from an array
17 Ansichten (letzte 30 Tage)
Ältere Kommentare anzeigen
I am interested in plotting a curve to show the path of a point (B) on a rotating gear. This gear is attahced to an arm that makes one full revolution.
I have a for loop to evaluate theta from 0 to 2*pi (for theta=0:pi/180:2*pi). While the for loop runs, the position of point B is stored in a previously initialized, empty array (B=[]). The resulting array is 4x1 and I would like to extract only the first 3 rows to obtain the x,y,z components of the point's position. I intend to then use these x,y,z components to plot the path of the point using plot3(x,y,z).
Can anyone help me to extract the first 3 rows from the 4x1 array? Also, from this new 3x1 array, what would the arguments be in order to use plot3(x,y,z) properly?
0 Kommentare
Antworten (1)
Sindar
am 23 Okt. 2020
To extract the first three rows:
B3 = B(1:3,:);
x = B3(1,:);
y = B3(2,:);
z = B3(3,:);
But, if B is really 4x1, then you only have a single point
0 Kommentare
Siehe auch
Kategorien
Mehr zu Surface and Mesh Plots 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!