??? Error using ==> interp1 at 261 The values of X should be distinct. Error in ==> StallPower_20131029_S809 at 10 c=interp1(rc_table(:,2),rc_table(:,3),rad);

Question

AbdelRahman Elkattan 2013-10-30

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/104346-error-using-interp1-at-261-the-values-of-x-should-be-distinct-error-in-stallpower_2013

回答： ES 2013-10-30

When i'm using iterp1 with rc_table, displaying this message

??? Error using ==> interp1 at 261
The values of X should be distinct.
Error in ==> StallPower_20131029_S809 at 10
    c=interp1(rc_table(:,2),rc_table(:,3),rad);

What is the problem and its solution, Please?

rc_table :
1  0.345899000000000
1.50000000000000  0.712727000000000
2  0.661241000000000
2.50000000000000  0.609755000000000
3  0.560511000000000
3.50000000000000  0.511266000000000
4  0.459780000000000
4.50000000000000  0.408293000000000
5  0.356807000000000
5.50000000000000  0.308684000000000

1 个评论
显示 -1更早的评论隐藏 -1更早的评论

Walter Roberson 2013-10-30

Could you check size(rc_table,1) and length(unique(rc_table(:,2)))

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

ES 2013-10-30

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/104346-error-using-interp1-at-261-the-values-of-x-should-be-distinct-error-in-stallpower_2013#answer_113670

在 MATLAB Online 中打开

For your data it works fine. All it says is values in X must be distinct and monotonously increasing. Your X is

rc_table(:,2)

and its values are

which are unique and monotonically increasing. If I were you, I would check the data again and check if there is any accidental conversion to integer type.

for example, if you had done int8(rc) somewhere, then interpolation would fail.