create a 3D smoothing with csaps (or similar)
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To get a better set of nodes arranged in space as a ‘curve’, how can I improve this code? Could you suggest?
load curve_1
cc = curve_1; %or curve_2
x = cc(:,1);
y = cc(:,2);
z_min = min(cc(:,3));
z_max = max(cc(:,3));
z = z_min:0.1:z_max;
z = z';
% code
[pp,p] = csaps(z,[x;y]);
val = fnval(pp,z);
figure
plot3(x,y,z);
hold on
plot3(val(1,:),val(2,:),z,'r-')
grid on
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Mathieu NOE
2024년 6월 7일
hello again !
as your post title is about smoothing, this is what I propose , based on the fex submission :
I attached the function in my answer if it makes your life simpler
now, maybe we should also create some intermediate points with interpolation (will be done just after this first answer)
so the starter :
load curve_1
cc = curve_1; %or curve_2
% load curve_2
% cc = curve_2; %or curve_2
x = cc(:,1);
y = cc(:,2);
z = cc(:,3);
% smoothing (if needed)
[zz,s,exitflag] = smoothn({x,y,z},1);
xn = zz{1};
yn = zz{2};
zn = zz{3};
plot3(x,y,z,'*');
hold on
plot3(xn,yn,zn);
댓글 수: 4
Mathieu NOE
2024년 6월 10일
My pleasure , and thanks again for accepting my answer
you can also reward other contributors by voting
추가 답변 (1개)
Matt J
2024년 6월 7일
편집: Matt J
2024년 6월 7일
load curve_1
cc = curve_1; %or curve_2
x = cc(:,1);
y = cc(:,2);
z = cc(:,3);
t=linspace(0,1,height(cc));
tu=linspace(0,1,5*height(cc));
% code
[pp,p] = csaps(t,cc',0.995);
val = fnval(pp,tu);
figure
plot3(x,y,z,'o');
hold on
plot3(val(1,:),val(2,:),val(3,:),'r-')
grid on
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