title: Knitr ignoring fig.pos?
body: <p>I am trying to insert a figure in a RMarkdown document but am having trouble getting it to appear in the right place.  The figure below shows the problem: when using a figure caption, the figure appears at the top of the page rather than below the relevant paragraph in the document. </p>
  
  <p><a href="https://i.stack.imgur.com/0FgIJ.png" rel="noreferrer"><img src="https://i.stack.imgur.com/0FgIJ.png" alt="enter image description here"></a> </p>
  
  <p>Here is the code for this minimum working example: </p>
  
  <pre><code>---
  title: "Untitled"
  author: "Author"
  date: "27 February 2017"
  output: 
    pdf_document:
      fig_cap: yes
      keep_tex: yes
  ---
  
  ```{r setup, include=FALSE}
  knitr::opts_chunk$set(echo = TRUE, fig.pos= "h")
  ```
  
  ## R Markdown
  
  This is an R Markdown document. Markdown is a simple formatting syntax for authoring HTML, PDF, and MS Word documents. For more details on using R Markdown see &lt;http://rmarkdown.rstudio.com&gt;.
  
  \newpage
  
  ## Including Plots
  
  You can also embed plots, for example:
  
  ```{r pressure, echo=FALSE, fig.cap = "Hello"}
  plot(pressure)
  ```
  
  Note that the `echo = FALSE` parameter was added to the code chunk to prevent printing of the R code that generated the plot.
  </code></pre>
  
  <p>And here is the relevant part of the LaTeX output; note that the <code>fig.pos</code> option is ignored:</p>
  
  <pre><code>You can also embed plots, for example:
  
  \begin{figure}
  \centering
  \includegraphics{test_files/figure-latex/pressure-1.pdf}
  \caption{Hello}
  \end{figure}
  
  Note that the \texttt{echo\ =\ FALSE} parameter was added to the code
  chunk to prevent printing of the R code that generated the plot.
  </code></pre>
  
  <p>My set-up is described below.  I'm pretty sure this worked in previous version of knitr, but I don't have a note of which version that might have been.</p>
  
  <pre><code>&gt; sessionInfo()
  R version 3.3.2 (2016-10-31)
  Platform: x86_64-w64-mingw32/x64 (64-bit)
  Running under: Windows &gt;= 8 x64 (build 9200)
  
  locale:
  [1] LC_COLLATE=English_United Kingdom.1252  LC_CTYPE=English_United Kingdom.1252   
  [3] LC_MONETARY=English_United Kingdom.1252 LC_NUMERIC=C                           
  [5] LC_TIME=English_United Kingdom.1252    
  
  attached base packages:
  [1] stats     graphics  grDevices utils     datasets  methods   base     
  
  loaded via a namespace (and not attached):
   [1] backports_1.0.5 magrittr_1.5    rprojroot_1.2   htmltools_0.3.5 tools_3.3.2    
   [6] yaml_2.1.14     Rcpp_0.12.9     stringi_1.1.2   rmarkdown_1.3   knitr_1.15.1   
  [11] stringr_1.2.0   digest_0.6.12   evaluate_0.10  
  </code></pre>