Initial text.

vignettes/PimentelGomes.Rmd

 ---
-title: "Vignette Title"
-author: "Vignette Author"
+title: "Análise dos dados em Pimentel-Gomes (2009)"
+author: "Walmes Zeviani"
 date: "`r Sys.Date()`"
 output: rmarkdown::html_vignette
 vignette: >
-  %\VignetteIndexEntry{Vignette Title}
+  %\VignetteIndexEntry{Análise dos dados em Pimentel-Gomes (2009)}
   %\VignetteEngine{knitr::rmarkdown}
   %\VignetteEncoding{UTF-8}
 ---
 
-Vignettes are long form documentation commonly included in packages. Because they are part of the distribution of the package, they need to be as compact as possible. The `html_vignette` output type provides a custom style sheet (and tweaks some options) to ensure that the resulting html is as small as possible. The `html_vignette` format:
+Essa *vignette* tem como objetivo fazer a análise dos conjuntos de dados
+do livro Pimentel-Gomes (2009), a décima quinta edição da obra **Curso
+de Estatística Experimental**.
+
+Para instalar o [`legTools`][], faça
+
+```{r, eval=FALSE}
+library(devtools)
+install_git("http://git.leg.ufpr.br/leg/legTools.git")
+
+```
+
+```{r}
+library(legTools)
+packageVersion("legTools")
+
+```
+[`legTools`]: http://git.leg.ufpr.br/leg/legTools
+
+
+## Delineamento Inteiramente Casualizado
+
+Considere os dados disponíveis na página 62 referentes à valores
+fictícios de um experimento de alimentação de porcos no qual se usou 4
+níveis do fator ração. O experimento foi instalado em um delineamento
+inteiramente casualizado com 5 animais (unidades experimentais) para
+cada nível de ração. A variável resposta medida foi o ganho de peso dos
+animais (kg).
+
+Esses dados fazem parte do pacote `legTools` e estão no *data frame*
+`wgpigs`. Alternativamente, pode-se fazer o download do mesmo no formato
+texto separado por tabulação.
+
+```{r}
+## url <- "http://blog.leg.ufpr.br/~leg/legTools/dataset/wgpigs.txt"
+## browseURL(url)
+## wgpigs <- read.table(file=url, header=TRUE, sep="\t")
+
+library(legTools)
+
+data(wgpigs)
+str(wgpigs)
+
+```
+
+
+
+<!--==================================================================== -->
+
+Vignettes are long form documentation commonly included in
+packages. Because they are part of the distribution of the package, they
+need to be as compact as possible. The `html_vignette` output type
+provides a custom style sheet (and tweaks some options) to ensure that
+the resulting html is as small as possible. The `html_vignette` format:
 
 - Never uses retina figures
 - Has a smaller default figure size
-- Uses a custom CSS stylesheet instead of the default Twitter Bootstrap style
+- Uses a custom CSS stylesheet instead of the default Twitter Bootstrap
+  style
 
 ## Vignette Info
 
-Note the various macros within the `vignette` setion of the metadata block above. These are required in order to instruct R how to build the vignette. Note that you should change the `title` field and the `\VignetteIndexEntry` to match the title of your vignette.
+Note the various macros within the `vignette` setion of the metadata
+block above. These are required in order to instruct R how to build the
+vignette. Note that you should change the `title` field and the
+`\VignetteIndexEntry` to match the title of your vignette.
 
 ## Styles
 
-The `html_vignette` template includes a basic CSS theme. To override this theme you can specify your own CSS in the document metadata as follows:
+The `html_vignette` template includes a basic CSS theme. To override
+this theme you can specify your own CSS in the document metadata as
+follows:
 
     output: 
       rmarkdown::html_vignette:
@@ -29,7 +88,8 @@ The `html_vignette` template includes a basic CSS theme. To override this theme
 
 ## Figures
 
-The figure sizes have been customised so that you can easily put two images side-by-side. 
+The figure sizes have been customised so that you can easily put two
+images side-by-side.
 
 ```{r, fig.show='hold'}
 plot(1:10)
@@ -42,11 +102,13 @@ You can enable figure captions by `fig_caption: yes` in YAML:
       rmarkdown::html_vignette:
         fig_caption: yes
 
-Then you can use the chunk option `fig.cap = "Your figure caption."` in **knitr**.
+Then you can use the chunk option `fig.cap = "Your figure caption."` in
+**knitr**.
 
 ## More Examples
 
-You can write math expressions, e.g. $Y = X\beta + \epsilon$, footnotes^[A footnote here.], and tables, e.g. using `knitr::kable()`.
+You can write math expressions, e.g. $Y = X\beta + \epsilon$,
+footnotes^[A footnote here.], and tables, e.g. using `knitr::kable()`.
 
 ```{r, echo=FALSE, results='asis'}
 knitr::kable(head(mtcars, 10))