compare two vectors then insert missing element

3 次查看（过去 30 天）
james sinos
james sinos 2021-4-29
回答： Stephen23 2021-4-29
i have a matrix :
A=[ 1.000 0.5860 0.01403
2.500 0.7395 0.01277
3.500 0.8450 0.01146
4.000 0.8967 0.01173
4.500 0.9476 0.01215
5.000 0.9962 0.01280
6.000 1.0973 0.01367
6.500 1.1398 0.01457
7.000 1.1889 0.01515
8.000 1.2574 0.01915
8.500 1.2816 0.02234
9.500 1.3300 0.02731
10.500 1.3267 0.03649 ]
for the first column let say its
B=[ 1.000
1.500
2.000
2.500
3.500
4.000
4.500
5.000
5.500
6.000
6.500
7.000
7.500
8.000
8.500
9.000
9.500
10.000
10.500]
i want to compare A(:1) with b then insert missing rows to make A(:,1) = b , then perform interpolation for A(:,2) and A(:,3) new rows
thanks
  1 个评论
Chunru
Chunru 2021-4-29
Bq = sort(union(B, A(:,1))); % the query points are from B and A(:,1)
C = interp1(A(:, 1), A(:, 2:end), Bq); % Interpolation
C = [Bq C]; % The result

请先登录，再进行评论。

请先登录，再回答此问题。

回答（1 个）

Stephen23
Stephen23 2021-4-29
Ran in:
Simpler:
A=[ 1.000 0.5860 0.01403
2.500 0.7395 0.01277
3.500 0.8450 0.01146
4.000 0.8967 0.01173
4.500 0.9476 0.01215
5.000 0.9962 0.01280
6.000 1.0973 0.01367
6.500 1.1398 0.01457
7.000 1.1889 0.01515
8.000 1.2574 0.01915
8.500 1.2816 0.02234
9.500 1.3300 0.02731
10.500 1.3267 0.03649 ];
B = 1:0.5:10.5;
C = interp1(A(:,1),A,B(:))
C = 20×3
1.0000 0.5860 0.0140 1.5000 0.6372 0.0136 2.0000 0.6883 0.0132 2.5000 0.7395 0.0128 3.0000 0.7923 0.0121 3.5000 0.8450 0.0115 4.0000 0.8967 0.0117 4.5000 0.9476 0.0121 5.0000 0.9962 0.0128 5.5000 1.0467 0.0132

类别

在 Help Center 和 File Exchange 中查找有关 Get Started with MATLAB 的更多信息

标签

产品

Community Treasure Hunt

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

Start Hunting!

Translated by