One of the best ways to get started in Terra is to explore Featured Workspaces, which span a variety of possible use cases. They are standardized for completeness and ease of use to let you reproduce instructive results and learn established methodologies. The workspace description should have enough detail to allow you to run on the included sample data, and cost and time estimates give you the confidence to run on your own data.

You will find these resources in the Library - Showcase & Tutorials (access using the hamburger menu at the top left of your screen in Terra). 

Below is a list of available Featured Workspaces grouped by subject. Workspaces that include template or tutorial notebooks and what language they are in are noted in parentheses: (i.e. Py3).

Contents

Intro or Tutorials workspaces

• Terra Quickstart Workspace
• Jupyter Notebooks 101 (does not require R or Python coding)
• Terra Notebooks Playground (includes both R and Py3)
• PyGMQL playground
• Hail tutorial (Py3 notebook)
• Reproducing the paper Tetralogy of Fallot (Includes a cluster analysis in an R-based notebook)

Analysis-focused workspaces

• Probability of Being Signal comparison notebook (R) 
• Waddington-OT
• TOSC19 - Variant Spark
• idap - SNVs and Indels on tumor-normal samples

Data-focused workspaces (more coming soon!)

• Introduction to the TARGET dataset 
• ENCODE tutorial (includes R notebook)
• Introduction to TCGA dataset
• HCA Optimus pipeline

Workflow (pipeline)-focused workspaces

• Seq format conversion
• HCA Optimus pipeline
• DNA methylation pre-processing
• InferCNV SCP scRNA seq
• Cloud-based RNA sequencing (scRNA-Seq)
• Variant Calling with Spark Multicore

GATK showcase workspaces

• Germline SNPs and Indels GATK4 hg38
• Exome analysis pipeline
• Somatic CNV discovery - GATK4
• Somatic SNVs and Indels discovery - GATK4
• RNA-Germline variant calling
• Whole Genome Analysis pipeline
• CNN variant filter
• Germline SNPs and Indels GATK4 hg37
• SNP/Indel calling in mitochondria 

Intro or tutorial workspaces

Need to get up to speed on particular analysis packages or fundamentals? You'll find lots of useful, (mostly) notebooks-based analysis tools in these workspaces. You'll also find hands-on exercises to get you started, wrapped as complete packages with sample data and information on runtime cost.

Terra Quickstart Workspace: Start accessing, processing and analyzing data on Terra with hands-on exercises streamlined so you can get experience and see results quickly.

Working through the exercises and notebooks will give you an overall intro to Terra - a way to understand how to get work done while getting familiar with the functions and features of the platform - from the Data and Notebooks tabs to the Workflows and Job History tabs.

• Analyze data interactively with a Jupyter notebooks primer
• Create and interact with a cohort of data hosted in Terra's Data Library
• Import cohort data to a Terra workspace and run a quick analysis in a notebook (in R)
• Link unformatted genomics data in a Google bucket to your workspace data table for analysis
• Set up, launch, and monitor an analysis workflow using the linked data as input

Jupyter Notebooks 101: Maybe you have heard of Jupyter notebooks and you're interested using them  to do interactive analysis on large amounts of data. This workspace will help explain 1) what notebooks are and how to use them in biomedical research; 2) the relationship between a notebook and a workspace; 3) Jupyter Notebook basics: how to use a notebook, install packages, and import modules

Terra Notebooks Playground:  This workspace contains a set of Jupyter Notebooks that allow users to play with the interactive functionality of Jupyter notebooks, a web-based application that supports code in a variety of languages (R and Python, among others). Notebooks are organized into two categories: R and Python, and streamlines interaction with cloud-based resources.

PyGMQL Playground: an introduction to the GenoMetric Query Language and its engine. GMQL is a query language designed to handle tertiary genomic data. It operates downstream of raw data preprocessing pipelines and supports queries over thousands of heterogeneous datasets and samples. Based on Hadoop framework and Apache Spark platform, GMQL ensures high scalability, expressivity, flexibility and simplicity of use, as demonstrated by several biological query examples on ENCODE and TCGA datasets.

Hail notebook tutorial: Hail provides an open-source framework to analyze the largest genetic data sets in existence and to meet the exploding needs of hospitals, diagnostic labs, and industry. Hail's efficient and scalable framework currently powers dozens of major academic studies. This workspace is an introductory tutorial that demonstrates the basics of using the Hail package. It does not currently support Hail’s high-performance features and should not be used to attempt to run Hail at large scale. 

Reproducing the paper: Variant analysis of Tetralogy of Fallot: This workspace reproduces a classic example of a study to understand the genetics that underlie a particular phenotype. described by Matthieu Miossec and collaborators in the bioRxiv preprint "Deleterious genetic variants in NOTCH1 are a major contributor to the incidence of non-syndromic Tetralogy of Fallot (ToF). The workspace reproduces all steps in the study as closely as possible, from processing the raw data (BAM) files, to calling variants, to the clustering analysis that led to the final result. The workspace serves as a template of best practices for making your own work easily reproducible with a detailed explanation of how we reproduced the ToF study using a cloud-based analysis platform. Sample data and notebooks allow users to reproduce the process themselves.  

Analysis-focused workspaces

 PBS comparison analysis (ENCODE data): Learn how to search, analyze, and visualize ENCyclopedia Of DNA Elements (ENCODE) data. The resources in this workspace cover binning ENCODE ChIP-seq datasets into non-overlapping 5 kB bins and determining the signal enrichment in each bin. In addition to workflows that calculate the Probability of Being Signal, a notebook analyzes PBS workflow output to identify regions of interest

Waddington-OT: This tutorial provides a practical, hands-on introduction to inferring developmental trajectories with Waddington-OT. Single cell RNA-sequencing allows us to profile the diversity of cells along a developmental time-course by recording static snapshots at different time points. However, we cannot directly observe the progression of any individual cell over time because the measurement process is destructive... Waddington-OT is designed to infer the temporal couplings of a developmental stochastic process from samples collected independently at various time-points. 

TOSC19 Variant Spark: VariantSpark is a machine learning library for real-time genomic data analysis (for thousands of samples and millions of variants) and is...

• Built on top of Apache Spark and written in Scala
• Authored by the team at CSIRO Bioinformatics in Australia
• Uses a custom machine learning random forest implementation to find the most important variants attributing to a phenotype of interest

idap - SNVs and Indels in tumor-normal samples: A reproducible workflow integrating the analysis results from Mutect2 and Varscan2 for the detection of single nucleotide mutations and small deletions and insertions on paired tumor-normal samples. 

Data-focused workspaces (more coming soon!)

These highlight specific data sets and include examples of how to access and process data in those workspaces. Data sets can include public-access data with a broad range of audiences and use cases and restricted-access data for specific research groups.

Introduction to TARGET dataset: Practice retrieving data from the Genomic Data Commons Data Portal and running tools that use the TARGET dataset to create a panel-of-normals VCF (2-CNV_Somatic_Panel), then use the that VCF to identify somatic copy number variations (3-CNV_Somatic_Pair).

ENCODE: This workspace outlines how to access and analyze ENCODE ChIP-seq data. Steps include 1) exploring and exporting data in the ENCODE data explorer 2) binning the data into non-overlapping 5 KB bins and determining the signal enrichment in each bin using a WDL tool 3) using the output from 2 to identify 5 kB regions of interest and 4) zero in on these regions using IGV in a web browser. 

Intro to TCGA data: Practice accessing and analysing TCGA data with basic analysis Tools. Data processing workflows allow you to create a panel of normal VCF (1-Mutect2_PON) and then use the that VCF to perform somatic SNP and indel calling (Mutect2_GATK4).

HCA Optimus Pipeline: The Optimus pipeline, developed by the Data Coordination Platform of the Human Cell Atlas (HCA DCP), processes 3 prime single cell transcriptome data from the 10X Genomics v2 (and v3) assay. This workspace describes the pipeline and provides a fully reproducible example of the workflow.

Workflow (pipeline)-focused workspaces

These workspaces showcase workflows and tools for general use by the genomics community. Many contain tools developed at and supported by Broad.

Seq format conversion: Provides users with example WDL's for converting sequence data file formats for downstream analysis. Conversion methods include Paired FASTQ to Unmapped BAM, BAM to Unmapped BAM, and CRAM to BAM. The Validate BAM method is also added for confirming if SAM or BAM files are in the proper format.

HCA Optimus Pipeline: The Optimus pipeline, developed by the Data Coordination Platform of the Human Cell Atlas (HCA DCP), processes 3 prime single cell transcriptome data from the 10X Genomics v2 (and v3) assay. This workspace describes the pipeline and provides a fully reproducible example of the workflow.

DNA methylation pre-processing: Suite of tools to conduct methylation data analysis. Methods from this workspace can be used for alignment and quality control analysis for various protocols including Whole Genom Bisulfite Sequencing (WGBS), Reduced Representation Bisulfite Sequencing (RRBS) and Hybrid Selection Bisulfite Sequencing (HSBS).

InferCNV SCP scRNAseq: The purpose of inferCNV is to explore tumor single cell RNA-seq data to identify evidence for copy number variations such as deletion and gain of entire and/or large segments of chromosomes. inferCNV compares expression intensity of genes across positions of tumor genome to reference 'normal' cells. A resulting heatmap illustrates the relative expression intensities across each chromosome to depict higher or lower expression of regions of the tumor genome compared to expression in ‘normal’ cells...  

Cloud-based RNA sequencing (scRNA-Seq): This workspace reproduces major steps in the analysis used to generate Figure 2b in the paper "Nuclei multiplexing with barcoded antibodies for single-nucleus genomics" (Nature Communications, 2019 in press). In particular there are three workflows (tools) that:

• Generating RNA gene-count and hashtag count matrices (Cellranger Count)
• Demultiplexing nucleus-hashing data based on the hashtag count matrix (demuxEM)
• Processing the demultiplexed singlets for single-nucleus RNA-Seq analysis (including quality-control, dimension reduction, clustering analysis, and visualization) (scCloud)

Variant Calling with Spark Multicore: This workspace highights a pipeline for calling variants from aligned input data on a single multicore machine. The pipeline, ReadsPipelineSpark, includes the following GATK “Best Practices” tools:

• Mark Duplicates
• BQSR
• Haplotype Caller

GATK4 Best Practices showcase workspaces

Working examples of best practices GATK workflows, along with sample data and time and cost estimates.

Germline SNPs & Indels GATK4 hg38: Processing For Variant Discovery, HaplotypeCallerGVCF, and Joint Discovery workflows. These workflows make up the Pre-processing and Variant Discovery portions of the Best Practices for Germline SNP & Indel Discovery. The reference genome is hg38. 

Exome analysis pipeline: A fully reproducible example workflow for exome sequence data pre-processing and germline short variant discovery.

Somatic CNVs discovery - GATK4:The variant discovery portion of GATK CNV; one workflow creates a panel of normals and a second runs the GATK CNV pipeline on a matched pair with Oncotator. Detailed descriptions of the workflows are available in GATK's Best Practices Document.

Single sample Somatic SNVs and Indels: A fully reproducible example of somatic SNV and Indels variant discovery using the Mutect 2 workflow. Also includes a validation WDL for users planning to edit the WDL or workflows. Detailed description of the workflow is available in GATK's Best Practices Document.

Germline variant calling in RNAseq: Best Practices WDL workflow calls germline short variants (SNPs/Indels) from RNAseq data using GATK v4.1 and related tools. 

Whole Genome Germline SNPs and Indels: A fully reproducible example of data pre-processing and germline short variant discovery. This is the production version of the pipeline which contains several quality control task within the workflow in addition to the regular data processing. The workflow takes unmapped pair-end sequencing data (unmapped BAM format) and returns a GVCF and other metrics read for joint genotyping. 

CNN and variant filter: A fully reproducible example of a workflow filtering variants using GATK CNN. Supplemental workflows have been added for advanced users looking to generate and evaluate their own training model. Please read the following discussion to learn more about the CNN tool: Deep Learning in GATK4.

Germline SNPs & Indels GATK4 hg37: Processing For Variant Discovery, HaplotypeCallerGVCF, and Joint Discovery workflows. These workflows make up the Pre-processing and Variant Discovery portions of the Best Practices for Germline SNP & Indel Discovery. The reference genome is hg37. 

SNP/Indel calling in mitochondria - hg38: A fully reproducible example of mitochondrial SNP and Indel variant calling (including low allele frequencies 1-5%) from whole-genome sequencing data. The pipeline takes into consideration inherent mitochondrial characteristics such as circular DNA structure and presence of NuMts ("nuclear mitochondrial DNA segment" that transpose to the nuclear genome of eukaryotic organisms).