General trace and log analysis patterns allow the application of uniform diagnostics and anomaly detection across diverse software environments. It includes troubleshooting, debugging, describing, and explaining problems and incidents on various operating systems and platforms. It is also helpful in recording network traces, malware, general data, narratives, and text and image analysis (space-like narratology). This course, organized as a pattern language dictionary and cross-referenced with classification, explains and teaches more than 200 traces and log analysis patterns.

A Guide to Learning Software Trace and Log Analysis Patterns

## Projective space
When we have a [split trace](https://www.educative.io/courses/guide-learning-software-trace-log-analysis-patterns/split-tensor-dimension-extension-homotopy) with hundreds of separate trace files and a smaller split trace with fewer files that were recorded simultaneously with the larger split-trace (for example, a client from a client-server environment), we can “project” the smaller [message space](https://www.educative.io/courses/guide-learning-software-trace-log-analysis-patterns/hedges-interspace-layered-transition-poincare) into the larger message space as depicted in the following diagram:


# Projective space
When we have a [split trace](https://www.educative.io/courses/guide-learning-software-trace-log-analysis-patterns/split-tensor-dimension-extension-homotopy) with hundreds of separate trace files and a smaller split trace with fewer files that were recorded simultaneously with the larger split-trace (for example, a client from a client-server environment), we can “project” the smaller [message space](https://www.educative.io/courses/guide-learning-software-trace-log-analysis-patterns/hedges-interspace-layered-transition-poincare) into the larger message space as depicted in the following diagram:


This lesson introduces the following analysis patterns: projective space, relative density, shared point, sheaf of activities, and small DA+TA.

Getting Started

Activity

Block and Data

Error and Large Scale

Message 1

Message 2

Trace as a Whole

Trace Set

Vocabulary, Memory, Code and Text

Conclusion

Index

Projective, Relative, Shared, Sheaf, Small DA+TA

Projective space