Hi Emilio,

It is always more helpful to provide a reproducible example snippet of the code and data you currently
have and a text representation of the result that you want to achieve. This way those who view your
question are more likely to provide a response. 

I would also discourage the use of links as it provides additional and sometimes inconvenient
material for the person who would like to help. Please provide a summary of the operation rather
than the documentation. 

Best regards,

Marcel