With the increasing availability of granular data on the relationships between individual entities - such as persons (social media), countries (internatinal trade) and financial institutions (supervisory reporting) - network analysis offers many possibilities to extract useful information from such data. This post provides an introduction to network analysis in R using the powerful igraph package for the calculation of metrics and ggraph for visualisation. It marks the beginning of a more comprehensive treatment of network analysis on r-econometrics.