[R] R how to find outliers and zero mean columns?

[Jordan Meyer]

I strongly suggest checking out some R tutorials. Most of these tasks are
basic data management that are likely covered in just about any tutorial.
I'm afraid that this isn't the appropriate forum for such basics.
On Mar 30, 2016 9:14 PM, "Norman Pat" <normanmath1 at gmail.com> wrote:

> Hi team
>
> I am new to R so please help me to do this task.
>
> Please find the  attached data sample. But in the original data frame I
> have 350 features and 400000 observations.
>
> I need to carryout these tasks.
>
> 1. How to Identify features (names) that have all zeros?
>
> 2. How to remove features that have all zeros from the dataset?
>
> 3. How to identify features (names) that have outliers such as 99999,-1 in
> the data frame.
>
> 4. How to remove outliers?
>
>
> Many thanks
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