- 1 Introduction
- 1.1 How To Use This Document
- 1.2 What is GBTIDL?
- 1.3 Main Features of GBTIDL
- 1.4 Where can I run GBTIDL?
- 1.5 Obtaining GBTIDL
- 1.6 User Documentation
- 2 Quick Start Example of GBTIDL
- 3 Getting Started
- 3.1 Starting GBTIDL
- 3.2 Getting Help with Commands
- 4 Accessing Data Files
- 4.1 Working Online
- 4.2 Accessing SDFITS Data After an Observing Run
- 4.3 Creating SDFITS Files
- 4.4 Accessing SDFITS Files
- 4.5 Accessing Multiple SDFITS Files Simultaneously
- 4.6 Summary of the Location of Data
- 4.7 Listing the Contents of Data Files
- 5 Data Containers
- 5.1 Overview
- 5.2 Data Containers and Pointers
- 5.3 About the Primary Data Container
- 5.4 Examining and Changing Data Containers
- 5.5 Data Container Operations
- 6 Data Retrieval and Calibration
- 6.1 Calibrating Data
- 6.2 Retrieving Individual Records
- 6.3 Getting Scan Header Information
- 7 The Plotter
- 7.1 GUI Features
- 7.2 Auto Update (Freeze/Unfreeze)
- 7.3 Zooming
- 7.4 Printing Spectra and Creating Postscript Plots
- 7.5 Generating ASCII Data
- 7.6 Annotating the Display
- 7.7 Other Plotter Procedures
- 7.8 Colors
- 8 Data Analysis
- 8.1 Using the Stack
- 8.2 Removing Baselines
- 8.3 Averaging Data
- 8.4 Averaging Data not Aligned in Frequency
- 8.5 Smoothing Data
- 8.6 Fitting Gaussian Profiles
- 8.7 Introduction to Flagging and Blanking Data
- 8.8 Statistics
- 8.9 Using the Select and Find Features
- 8.10 Mapping
- 8.11 Other Analysis Procedures
- 9 Saving and Retrieving Data
- 9.1 keep
- 9.2 nsave
- 9.3 Retrieving Data from the Output File
- 10 Writing Your Own Procedures
- A. The !g Structure
- B. Tips on Using Data Containers for Experts
- C. Contents of the Spectrum Data Container
- D. Contents of the Continuum Data Container
- E. More about Flagging Data
- E..1 Using Flags in GBTIDL
- E..2 Using Flags in Data Retrieval and Averaging Procedures
- E..3 Listing Flags
- E..4 Undoing Flags
- E..5 Weighting Issues not Addressed by this Flagging Scheme
- F. Other GBTIDL Features and Examples
- F..1 Customizing the output of the list procedure
- F..2 Making postage stamp plots
- F..3 Example reduction sessions with sample data sets
- G. Reducing Continuum Data
- H. More Information
- H..1 Contributing Procedures
- H..2 Bugs and Enhancements
- H..3 General Hints and Tips
- H..4 GBTIDL FAQ
- H..5 Who Developed GBTIDL?
- H..6 Installing GBTIDL on a Mac
- Index