根据原始索引合并到子阵列

Question

我拆分了这个数组：

import numpy as np

a=np.array([7,1,2,3,4,5,0])

到

b=a[a<=2]
c=a[a>2]

或

b=[1,2,0]
c=[7,3,4,5]

然后，我预测b和c：

pred_b=[.9,2.01,.02]
pred_c=[7,3,3.85,5.001]

如果你能让我知道怎么做，我将不胜感激：

d=[7,.9,2.01,3,3.85,5.001,.02]

Answer 1

逻辑索引也适用于赋值：

android {
    compileSdkVersion 25
    buildToolsVersion "25"
  defaultConfig {
        targetSdkVersion 25
   }

}
In dependencies 

    compile 'com.android.support:appcompat-v7:25.1.0'
    compile 'com.android.support:design:25.1.0'
    compile 'com.android.support:recyclerview-v7:25.1.0'

Answer 2

以下是您问题的简单解决方案：

# create an array with the same shape as a
d = np.empty_like(a, dtype=float)
# assign values of pred_b to the slice of indicies of b (like you do in the question snippet)
d[a<=2] = pred_b
d[a>2] = pred_c