## Mapping to the MetabolOMIC Manifold

I recently had the pleasure of giving a presentation on one of my favorite topics, network mapping, and its application to metabolomic and genomic data integration. You can check out the full presentation below.

November 2, 2014 | Categories: Uncategorized | Tags: biochemical network, chemical similarity network, data analysis, data visualization, DeviumWeb, genomics, metabolomics, MetaMapR, network mapping, topological data analysis | Leave a comment

## 2014 Metabolomic Data Analysis and Visualization Workshop and Tutorials

Recently I had the pleasure of teaching statistical and multivariate data analysis and visualization at the annual Summer Sessions in Metabolomics 2014, organized by the NIH West Coast Metabolomics Center.

Similar to last year, I’ve posted all the content (lectures, labs and software) for any one to follow along with at their own pace. I also plan to release videos for all the lectures and labs including use cases for the freely available data analysis software listed below.

You can check out the introduction lecture to the covered material below.

New additions to the course include lecture and lab on Data normalization and updated and improved software.

Software

Stay tuned for videos of all of the material!

2014 Metabolomics Data Analysis and Visualization Tutorials Dmitry Grapov is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.

October 11, 2014 | Categories: Uncategorized | Tags: biochemical network, data analysis, data visualization, demo, DeviumWeb, lectures, metabolomics, MetaMapR, r-bloggers, tutorial, west coast metabolomics center, workshop | Leave a comment

## Multivariate Data Analysis and Visualization Through Network Mapping

Recently I had the pleasure of speaking about one of my favorite topics, Network Mapping. This is a continuation of a general theme I’ve previously discussed and involves the merger of statistical and multivariate data analysis results with a network.

Over the past year I’ve been working on two major tools, DeviumWeb and MetaMapR, which aid the process of biological data (metabolomic) network mapping.

DeviumWeb– is a shiny based GUI written in R which is useful for:

- data manipulation, transformation and visualization
- statistical analysis (hypothesis testing, FDR, power analysis, correlations, etc)
- clustering (heiarchical, TODO: k-means, SOM, distribution)
- principal components analysis (PCA)
- orthogonal partial least squares multivariate modeling (O-/PLS/-DA)

MetaMapR– is also a shiny based GUI written in R which is useful for calculation and visualization of various networks including:

- biochemical
- structural similarity
- mass spectral similarity
- correlation

Both of theses projects are under development, and my ultimate goal is to design a one-stop-shop ecosystem for network mapping.

In addition to network mapping,the video above and presentation below also discuss normalization schemes for longitudinal data and genomic, proteomic and metabolomic functional analysis both on a pathway and global level.

As always happy network mapping!

June 27, 2014 | Categories: Uncategorized | Tags: biochemical network, chemical similarity network, correlation network, Cytoscape, data analysis, data visualization, DeviumWeb, ggplot2, metabolomics, MetaMapR, multivariate, network mapping, O-PLS, R, r-bloggers, shiny, statistical analysis | 6 Comments

## ASMS 2014

I’ve recently participated in the American Society of Mass Spectrommetry (ASMS) conference and had a great time. I met some great people and have a few new ideas for future projects. Specifically giving a go at using self-organizing maps (SOM) and the R package mcclust for clustering alternatives to hierarchical and k-means methods.

I had the pleasure of speaking at the conference in the Informatics-Metabolomics section, and was also a co-author on a project detailing a multi-metabolomics strategy (primary metabolites, lipids, and oxylipins) for the study of type 1 diabetes in an animal model. Keep an eye out for my full talk in an upcoming post.

June 26, 2014 | Categories: Uncategorized | Tags: American Society of Mass Spectrommetry, ASMS, biochemical network, chemical similarity network, conference, data analysis, data visualization, DeviumWeb, metabolomics, MetaMapR, network mapping, networks, self-organizing maps | 1 Comment