João Daniel

João Daniel has asked 34 questions and find answers to 9 problems.

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About

I'm a BA statistic's student at UFMG (Brasil), and co-founder at Tecto - a startup in the data analysis field. I've experience in programming (C, Java, HTML, CSS, Ruby, RoR) and data analysis.

João Daniel questions

Avoiding IF in a simple mapping function
Count the number of negative values at the end of a vector
RSpec isn't generating spec files for my models and controllers
Place centered text between navigation buttons from Twitter Bootstrap
Keep record of login time and session duration - Java - Spring Security
How to test controller with Rspec - #show action
UI design with GWT
Get more information from User - Spring Security
How to change axis-label color in ggplot2?
Loops in R - Need to use index, anyway to avoid 'for'?

João Daniel answers

Multivariate GARCH packages [closed]
How to convert continuous variable to discrete in R?
Ignore outliers in ggplot2 boxplot + faceting + "free" options
Taking a disproportionate sample from a dataset in R
Forecasting time series data
Control number of decimal places on xtable output in R
How to load packages in R automatically?