GC Image Users' Guide
New Features and Improvements in Release 1.9
GC Image Release 1.9 (January 2008) has many new features and
improvements. See the GC Image Users' Guide for
In GC Image R1.9, rectangle and polygon objects can be flagged as
areas for reporting. An area object can be used to indicate a
region of pixels for a chemical(s) for reporting. Area objects have the
graphic shape metadata and most of computed attributes of blobs (i.e.,
the attributes in the blobs table).
GC Image R1.9 has several improvements for the Computer Language for
Identifying Chemicals (CLIC)™:
MS Arithmetic Operations
GC Image R1.9 now supports point-wise and mass/z-wise
Arithmetic Operations between two GCxGC-MS images and between GCxGC and
Summary Reports in GC Image and GC Project
In GC Image R1.9, Summary Reports replace
Simple Reports, providing improved reporting in GC Image and GC Project.
Summary Reports provide summary information about multiple 2D chromatograms,
with selectable sections for metadata, image view, blob table, blob set table,
excluded blob table, and area table. Summary Reports can be generated
from GC Image, from GC Project, and from automated processing in Import,
Process Runs, and Auto Processing. Among the improvements in GC Image R1.9
There is an option to save the blob table, blob set table, excluded blob table,
and area table in separate CSV-format files with hyperlinks in the Summary
GC Project has an option to save a single Summary Report or multiple individual
Summary Reports for multiple images.
GC Project Wizard
GC Image R1.9 has a GC Project Wizard that guides
users step-by-step in creating a project.
Improved GC Project
GC Image R1.9 has an improved GC Project which:
Allows users to import previously processed
images into a project.
Allows users to create and edit Vials
in a Vial List Table.
Provides a built-in Report Viewer for all reports in XML, HTML, CSV, and text
Provides a menu option and a toolbar button to invoke GC Image.
GC Image R1.9 supports sequence tables
in GC Project. GC Project provides a spreadsheet interface to edit sequence
tables and use sequence tables to automatically processing runs and associate
runs with vials. GC Project can export sequence tables in CSV and XML formats,
which can be imported by Agilent ChemStation. GC Project can import sequence
information from Agilent ChemStation and Shimadzu GCMSsolution.
Blob Table and Blob Set Table Improvements
GC Image R1.9 has several improvements of blob
tables and blob set tables.
GC Image R1.9 remembers the column sorting orders for Blob Table, Blob Set
Table and Template Object Table.
GC Image R1.9 remembers customized column widths for Blob Table, Blob Set Table
and Template Object Table.
The metadata dialog can be invoked by right clicking on a row in Blob Set Table
and Template Object Table.
GC Image R1.9 allows users to directly add blobs to template through a button
on Blob Table Dialog Toolbar.
New and Improved Operations
GC Image R1.9 allows users to skip baseline correction through a menu option.
GC Image R1.9 provides two new Draw Blob tools: Draw Ellipse blob and Draw
GC Image R1.9 has an option to set the minimum peak intensity threshold in blob
detection to use a SNR-relative value (the previous method) or an absolute
GC Image R1.9 provides an interactive tool to transform templates with different
scales, translates, and shears.
The blob metadata dialog can be invoked by right clicking on Image Viewer in
Point and Blob MS palette modes.
GC Image R1.9 allows users to set Characteristic Ions, group color, and blob
color for multiple blobs in the Multiple Blobs Metadata dialog and the Multiple
Template Peak Metadata dialog.
The number of decimal digits for floating-point mass/z
and intensity can be set individually in Mass Spectrum Viewer.
GC Image R1.9 provides a button to reset the configuration to the default
setting for Local Blob Detection.
GC Image R1.9 provides an additional hot-key, Ctrl-Z to invoke Undo.
GC Image R1.9 provides Undo for configuring the amount table and calibration
New and Improved Visualization
GC Image R1.9 allows users to define up to 4 color maps for one image and use
one key to toggle among multiple color maps (with the 'c' key).
GC Image R1.9 provides an interface to perform hierarchical clustering
GC Image R1.9 shows tick marks on the Intensity Axis (Z Axis) in
GC Image R1.9 allows users to use the mouse to change the view angle in the
3D View's Information Mode.
GC Image R1.9 allows users to zoom in and out with the mouse wheel in
the 3D View.
GC Image R1.9 shows calibration curves in the Configure Calibration Table
GC Image R1.9 shows the TIC value in the Mass Spectrum Viewer.
GC Image R1.9 show Deconvolution/Unmixing results in a bigger and re-sizable
GC Image R1.9 shows pixel coordinates and value at the cursor location on the
status bar in the Multi-Projections tool.
New and Improved I/O Support
GC Image R1.9 can import JEOL MassCenterFormat
GC Image R1.9 provides a new, streamlined workflow for importing images into GC
GC Image R1.9 can read modulation periods recorded in the comment field (e.g.,
"mod=8.0;") of Agilent ChemStation data folders (.D) and Agilent Mass
Spectral data files (.MS).
GC Image R1.9 allows users to crop, prepend, and append data in both the first
and second dimensions during importation.
GC Image R1.9 allows users to select ion ranges (e.g.,
"40, 65.8-66.8, 71.8-72.8") when importing mass spectral image files.
GC Image R1.9 provides a new Automated Action for saving summary reports in the
Import Parameters dialog.
GC Image R1.9 has an option to automatically scale imported images to fit the
current Image Viewer.
GC Image R1.9 provides recently used files dropdowns for configurations
and templates in Import Parameters Dialog, Process Runs and Auto Processing.
GC Image R1.9 provides menus to save and load import parameters and automation
The people of GC Image welcome your
suggestions of new features, your comments about existing features and
documentation, and reports of any problems. We strive to make GC Image meet the
needs of our users in their many GCxGC applications.
Contents Next: Introduction
GC Image™ Users' Guide © 2001–2007 by GC Image, LLC, and
the University of Nebraska.