如何插入包含NaN的matlab数据列？

Question

所以我有一个数据列" trainData",看起来像:

[
    Nan
    Nan
    Nan
    110
    NaN
    89
    Nan
    Nan
    123

and so on
]

我基本上需要对此进行插值以获得最终矩阵列:

[
    0
    36.6
    73.2
    110
    99.5
    89
    101.3
    112.6
    123

and so on
]

任何人都可以帮我怎么做？

我尝试过,interpl(traindata)但要么给我一些奇怪的NaN或者不行.这个你能帮我吗.

Answer 1

y = [NaN
     NaN
     NaN
     110
     NaN
     89
     NaN
     NaN
     123];

以下内容让你非常接近(我认为你实际上是一个算术错误,这就是你想要的):

y(1) = 0; %//I'm assuming this from your result, you gave us no information about this.

xi = (1:length(y))'; %'//Now I'm assuming that each element of your y matrix is equally spaced
x = xi(~isnan(y)); %// Find the x values that correspond to the numerical values of y
yi = interp1(x, y(~isnan(y)), xi)

yi =

         0
   36.6667
   73.3333
  110.0000
   99.5000
   89.0000
  100.3333
  111.6667
  123.0000