[datatable-help] Help coding

[Serdar Akin]

Hi,

I would do something like this:

## Create the table

DT        <- data.table(colour = rep(c("red", "blue", "green"), each= 3),
                         type = paste0('type', 1:3),
                         value = as.integer( rnorm(9, mean= 6, sd = 5)))

# Cast table and make it a contingence table
DT1        <- dcast.data.table(DT, colour ~ type, value.var = 'value', 
FUN = function(x) sum(x, na.rm = TRUE))


Den 12/03/17 kl. 04:49, skrev tuan173:
> Dear All,
> I am new to R, and trying to learn it.
> I need help with some coding. I have tried to make it, but it did not word.
> I have a data similar to this
>    <http://r.789695.n4.nabble.com/file/n4729632/Data.png>
> I want to make a table
> <http://r.789695.n4.nabble.com/file/n4729632/table1.png>
> And then fill the table with the values in the dataframe
> <http://r.789695.n4.nabble.com/file/n4729632/data2.png>
> My real data is much bigger than the example.
> I need advice to code for making a table, and then fill in the table.
> Thank you very much,
> Tuan
>
>
>
>
> --
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