[julia-users] Re: Grouping - Dataframes

[Philip Sivyer]

Hi
Looked at the link and wondering how I can convert my txt file.
The code below works nicely - how can I get my test.txt file with Col1 & 
Col2 data to be like iris?
What do I need to change in the below code?

using DataFrames
using RDatasets
iris = dataset("datasets", "iris")
by(iris, :Species, size)
by(iris, :Species, df -> mean(df[:PetalLength]))
by(iris, :Species, df -> DataFrame(N = size(df, 1)))

Regards

On Sunday, February 22, 2015 at 8:06:59 PM UTC, Philip Sivyer wrote:

> Hi
> Is it possible to summarize data in a data frame eg
>
> Col1  Col2
> A 2
> A 2.5
> B 7
> B 2
>
> I would like sum Col2 grouping by Col1 - output would be
> A , 4.5
> B,9
>
>
> Regards
>
>
>

[julia-users] Re: Grouping - Dataframes

[Philip Sivyer]

Hi
I get 
":Col1 anonymous function))" when I try *(df,:Col1,x->sum(x[:Col2]))*
Any ideas.
Will take a look at the link in a minute
Regards


On Sunday, February 22, 2015 at 8:06:59 PM UTC, Philip Sivyer wrote:

> Hi
> Is it possible to summarize data in a data frame eg
>
> Col1  Col2
> A 2
> A 2.5
> B 7
> B 2
>
> I would like sum Col2 grouping by Col1 - output would be
> A , 4.5
> B,9
>
>
> Regards
>
>
>

[julia-users] Grouping - Dataframes

[Philip Sivyer]

Hi
Is it possible to summarize data in a data frame eg

Col1  Col2
A 2
A 2.5
B 7
B 2

I would like sum Col2 grouping by Col1 - output would be
A , 4.5
B,9


Regards

[julia-users] Re: api - web scraping

[Philip Sivyer]

Thanks for the link
Regards

On Saturday, February 21, 2015 at 11:49:10 AM UTC, pip7...@gmail.com wrote:

> Any web scraping library or modules for the Julia language.
> If so, any links  - examples.
> Regards
>