我需要创建带有字符串" V"," D"," C"
的列标题的DF我有3行:
in_max =[a,b,c]
out_max = [d,e,f]
weight_max = [g,h]
我想设置我的DF,以便看起来像这样:
"v","d", "c"
a,b,"i"
d,f,"o"
g,h, "t"
基本上是第一行,是in_max的前两个值,其次是" I"第二行是out_max中的第一个和第三个值,然后是" O"最后两个值是withge_max中的值,然后是" t"。
我将如何在Scala中执行此操作?
让我们简单地将您的逻辑转换为代码:
val in_max = Seq("a","b","c")
val out_max = Seq("d","e","f")
val weight_max = Seq("g","h")
val df = Seq((in_max(0), in_max(1), "i"),
(out_max(0), out_max(2), "o"),
(weight_max(0), weight_max(1), "t"))
.toDF("v", "d", "c")
df.show
+---+---+---+
| v| d| c|
+---+---+---+
| a| b| i|
| d| f| o|
| g| h| t|
+---+---+---+