Skip to main content

Step by step instructions to introduce Latex equations in R markdown into Google Blogger


Here are step by step instructions to publish latex equations into google blooger account blogs using R. I was trying to figure out how to do this using copy and paste of the html generated from the knit2html function.
Unfortunately this does not work. It turns out that there is a simple fix between the copy and paste phase where one has to modiy the script used for MathJax on the webpage for \(\LaTeX\) to work.
Note that for my examples I have used examples from \(\LaTeX\) for Complete Novices by Nicola. L. C. Talbot.
Suppose this is the Latex text that I want to publish on Google Blogger. This is created in RStudio as a simple Rmd file.
-------------------------------------------
A linear equation in line $y = mx + c$

A linear equation with equation references
Equation ~\ref{eqn:linear} is a linear function
\begin{equation}
\label{eqn:linear}
f(x) = mx + c
\end{equation}
If you convert this to html using the knit2html function the resulting output does not translate the math equations at all. You will notice that the Latex symbol in the book reference above does not conver to Latex version.
So the steps that need to be followed are:
  • Run knit2html on the Rmd file knit2html(yourfile.Rmd)
  • Edit the resulting html file.
  • Find and replace this section of the code
<script type="text/javascript" src="https://c328740.ssl.cf1.rackcdn.com/mathjax/2.0-latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML">
</script>
with this
<script src='http://cdn.mathjax.org/mathjax/latest/MathJax.js' type='text/javascript'>
MathJax.Hub.Config({
HTML: ["input/TeX","output/HTML-CSS"],
TeX: { extensions: ["AMSmath.js","AMSsymbols.js"],
equationNumbers: { autoNumber: "AMS" } },
extensions: ["tex2jax.js"],
jax: ["input/TeX","output/HTML-CSS"],
tex2jax: { inlineMath: [ ['$','$'], ["\\(","\\)"] ],
displayMath: [ ['$$','$$'], ["\\[","\\]"] ],
processEscapes: true },
"HTML-CSS": { availableFonts: ["TeX"],
linebreaks: { automatic: true } }
});
</script>
  • Copy and paste the full html code now into the Google blogger interface. Preview to check if to your taste and zou should be done.
  • You can see the results of the above code in this link

Comments

Popular posts from this blog

Basic Econometrics - Chapter 1 - Exercise 1

Exercise 1.1 Table 1.2 gives data on the Consumer Price Index (CPI) for seven industrialized countries with 1982-1984 = 100 as base of the index. a. From the given data, compute the inflation rate of each country. b. Plot the inflation rate for each country against time (i.e. use the horizantal axis for time and the vertical axis for the inflation rate) c. What broad conclusions can you draw abou the inflation experience in the seven countries? d. Which countries inflation seems to be most variable? Can you offer any explanation? ## Note here I have to skip several rows and add column names. Have a look at ## the raw data. Column names are c('Year', 'Canada', 'France', 'Germany', ## 'Italy','Japan', 'UK', 'US') cpi <- read.table("https://raw.githubusercontent.com/cablegui/Econometrics/master/OriginalData/Table%201.2.txt", skip = 6, col.names = c("Ye...

Step by step guide to installing and using miktex with RStudio (Windows)

Using miktex with Rstudio is very easy with the miktex portable app available from http://miktex.org/portable. Steps 1. Follow the instructions from http://miktex.org/portable to download and unzip the miktex portable application in a loccation of your choice. 2. In R write the following code in a script and save it. Note that the E:\\Software-Silo\\Miktex\\miktex\\bin location is the location where I unzipped the miktex portable application. # Install miktex y <- Sys.getenv("PATH") x <- paste0(y,";","E:\\Software-Silo\\Miktex\\miktex\\bin") Sys.setenv(PATH=x) 3. Run Miktex by double clicking the following application "miktex-portable.cmd" in the Miktex main directory. 4. Run step 2 in RStudio to install the path into R environment. 5. Open a new RNW in RStudio to test whether Miktex works . 6. Run Compile PDF in RStudio. It should be just at the top of the RNW file created in step 5. 7. You will now see a PDF file whic...

Installing and using ROracle in R

Hi, Hope this post keeps you in the best of health. I am an oracle user and wanted to know how to fetch database information in R. There is a package out there called ROracle but there are no binaries for it and it thus needs to be built and then installed. Here are the steps to install it on Windows 7 machines. 1. Download the package from http://cran.r-project.org/web/packages/ROracle/index.html. Since I wrote this post the latest that was available was  ROracle_1.1-12.tar.gz . 2. Place the package in the directory where R is installed. I placed mine in E:\R\R-3.0.2\bin folder. 3. Install RTools from http://cran.r-project.org/bin/windows/Rtools/. Since my R version is R-3.0.2 the toolkit I needed was RTools31.exe. 4. Install the Rtools software in the R home directory. I placed mine in E:\R\Rtools. Place all the extras in there too. For example I placed my 32 bit extras in E:\R\RExtras32 and the 64 bit in E:\R\RExtras64 folder. These extras are not necessary for ...