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The Wordpress ODBC Driver is a powerful tool that allows you to connect with live data from Wordpress, directly from any applications that support ODBC connectivity.

Access Wordpress data like you would a database - read, write, and update Wordpress Pages, Posts, Tags, Users, etc. through a standard ODBC Driver interface.

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Analyze WordPress Data in R


Create data visualizations and use high-performance statistical functions to analyze WordPress data in Microsoft R Open.

Access WordPress data with pure R script and standard SQL. You can use the CData ODBC Driver for WordPress and the RODBC package to work with remote WordPress data in R. By using the CData Driver, you are leveraging a driver written for industry-proven standards to access your data in the popular, open-source R language. This article shows how to use the driver to execute SQL queries to WordPress data and visualize WordPress data in R.

Install R

You can complement the driver's performance gains from multi-threading and managed code by running the multithreaded Microsoft R Open or by running R linked with the BLAS/LAPACK libraries. This article uses Microsoft R Open (MRO).

Connect to WordPress as an ODBC Data Source

Information for connecting to WordPress follows, along with different instructions for configuring a DSN in Windows and Linux environments.

To connect to WordPress, set the URL property and other authentication properties. WordPress supports Basic (User and Password) and OAuth2.0 authentication, though Basic is recommended for a testing environment only. To connect with OAuth you will need to register an app with WordPress.

See the Getting Started guide in the CData driver documentation for more information.

When you configure the DSN, you may also want to set the Max Rows connection property. This will limit the number of rows returned, which is especially helpful for improving performance when designing reports and visualizations.

Windows

If you have not already, first specify connection properties in an ODBC DSN (data source name). This is the last step of the driver installation. You can use the Microsoft ODBC Data Source Administrator to create and configure ODBC DSNs.

Linux

If you are installing the CData ODBC Driver for WordPress in a Linux environment, the driver installation predefines a system DSN. You can modify the DSN by editing the system data sources file (/etc/odbc.ini) and defining the required connection properties.

/etc/odbc.ini

[CData WordPress Source] Driver = CData ODBC Driver for WordPress Description = My Description Url = http://www.yourwordpresshost.com

For specific information on using these configuration files, please refer to the help documentation (installed and found online).

Load the RODBC Package

To use the driver, download the RODBC package. In RStudio, click Tools -> Install Packages and enter RODBC in the Packages box.

After installing the RODBC package, the following line loads the package:

library(RODBC)

Note: This article uses RODBC version 1.3-12. Using Microsoft R Open, you can test with the same version, using the checkpoint capabilities of Microsoft's MRAN repository. The checkpoint command enables you to install packages from a snapshot of the CRAN repository, hosted on the MRAN repository. The snapshot taken Jan. 1, 2016 contains version 1.3-12.

library(checkpoint) checkpoint("2016-01-01")

Connect to WordPress Data as an ODBC Data Source

You can connect to a DSN in R with the following line:

conn <- odbcConnect("CData WordPress Source")

Schema Discovery

The driver models WordPress APIs as relational tables, views, and stored procedures. Use the following line to retrieve the list of tables:

sqlTables(conn)

Execute SQL Queries

Use the sqlQuery function to execute any SQL query supported by the WordPress API.

categories <- sqlQuery(conn, "SELECT Id, Name FROM Categories", believeNRows=FALSE, rows_at_time=1)

You can view the results in a data viewer window with the following command:

View(categories)

Plot WordPress Data

You can now analyze WordPress data with any of the data visualization packages available in the CRAN repository. You can create simple bar plots with the built-in bar plot function:

par(las=2,ps=10,mar=c(5,15,4,2)) barplot(categories$Name, main="WordPress Categories", names.arg = categories$Id, horiz=TRUE)