如果缺少<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<!--in this view, horizontal and vertical both dialog has scrollable List and other view looks static-->
<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="5">
<!--place your all top content here-->
</LinearLayout>
<!--weight 1 is giving List view the available space. -->
<ListView
android:id="@+id/listView"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="5"/>
<Button
android:id="@+id/button"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="@string/app_name"/>
</LinearLayout>
的任何元素,则统计信息包mean
将返回missing
。
array
如何获取非缺失值的平均值?
答案 0 :(得分:4)
skipmissing
函数将仅将不丢失的元素发送到mean
函数:
julia> using Statistics
julia> mean([1 2 3 4 5] )
3.0https://docs.julialang.org/en/stable/manual/missing/#Skipping-Missing-Values-1
julia> mean([1 2 missing 4 5] ) # Note missing value
missing
# Here is the answer:
julia> mean(skipmissing([1 2 missing 4 missing] ))
2.3333333333333335
正如@Milan Bouchet-Valat在对该问题的评论中指出的那样,missing
上的文档为here。它们是一个很好的快速入门,首先阅读Julia对缺失值的处理。