如果值等于某个数字，则将值从一列复制到另一列
[英]Copy values from one column to another if values equal to a certain number
问题描述
Could anyone show me how to copy values in the column( m/z ) to a new column if its value equals to 300 or 305?
如果列的值等于 300 或 305，谁能告诉我如何将列（ m/z ）中的值复制到新列？ If its value doesn't equal to 300 or 305, put 0 in the new column.如果它的值不等于 300 或 305，则在新列中输入 0。 It should look as follows.它应该如下所示。
1 个解决方案
解决方案1
0 2019-11-22 18:24:40
You could do:你可以这样做：
df['300'] = 0
df['305'] = 0
df['300'][df['m/z'] == 300] = 300
df['305'][df['m/z'] == 305] = 305
But i'm sure there might be a better way haha但我相信可能有更好的方法哈哈
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