GC Image Users' Guide
New Features and Improvements in Release 2.0
GC Image Release 2.0 (March 2009) has many new features and improvements.
See the GC Image Users' Guide for full documentation.
GC Image R2.0 introduces mesh objects for
comprehensive group analysis. A mesh object is a collection of panels that
supports shared edges and vertices. Chemically similar compounds often form a
cluster of peaks. A panel of a mesh can be drawn to include the peaks of
desired compounds and exclude the peaks of other compounds. The mesh allows a
set of panes that can be used for comprehensive analysis, i.e., covering all of
the relevant regions of the chromatogram. GC Image R2.0 provides a suite of
tools that can be used to create complex mesh objects in a short amount of
GC Image R2.0 allows users to define graphic groups. A graphic group allows
reporting of summed blob set features for a set of graphics. Each graphic group
is comprised of a set of graphics with the same group name that are either
areas or included graphics.
GC Image R2.0 has significant improvements for the Computer Language for
Identifying Chemicals (CLIC)™:
- CLIC supports a set of mathematical functions such as power(), sqrt(),
ln() and so on.
- CLIC supports nested functions and expressions.
- Users can specify the peak MS or integrated blob MS with any MS function
with "@" operator (for example "MassRank@peak(1)").
- CLIC supports eight new MS functions, MassRank(), Correlation(),
FirstDerivativeCorrelation(), Euclidean(), AbsoluteValue(),
FirstDerivativeAbsoluteValue(), LeastSquares() and
- The Ordinal() function supports multiple m/z arguments.
- GC Image R2.0 allows users to perform customized global
qualitative/quantitative analysis on all blobs with any number of CLICs in
- GC Image R2.0 allows users to perform customized local
qualitative/quantitative analysis on any blob with Analysis CLIC in Blob
Linear Retention Index
GC Image R2.0 allows users to define one linear retention
index calibration table for each column and automatically computes the
linear retention index for all analytes (blobs and area objects).
GC Image R2.0 has significant improvements for quantitative analysis:
- GC Image R2.0 allows users to define qualifier and quantifier ions through
Qualifier/Quantifier Ion Table in Blob
- GC Image R2.0 allows users to perform internal/external standard
calibration with TIC or quantifier ion responses.
- GC Image R2.0 reports the summarized amount and amount source for blob
sets in Blob Set Table.
Blob Analysis Tools
GC Image R2.0 provides several new blob analysis tools and improvements.
GC Image R2.0 has several improvements for template matching:
GC Image R2.0 allows users to define a set of rules to filter blob table
with Filter Report.
Multi-Run Comparison Report
GC Project R2.0 allows users to compare blobs, areas and blob sets from
multiple images and examine the changing trends with Multi-Run Comparison Report.
New and Improved I/O Support
- GC Image R2.0 can export and import mzXML
- GC Image R2.0 can read modulation periods recorded in the comment field
(e.g., "mod=8.0;") of Shimadzu QGD and
- GC Image R2.0 allows users to specify an intensity threshold to filter
out spectral peaks during import.
New and Improved Operations
- GC Image R2.0 allows users to specify LIMS
numbers for images.
- GC Image R2.0 allows users to specify Minimum Volume Filter for Blob
- GC Image R2.0 allows users to set all Blob Detection settings in
- GC Image R2.0 provides standardized and improved mouse behaviors in all
- GC Image R2.0 allows users to lay out multiple ion chromatogram windows
with Windows menu.
- GC Image R2.0 allows users to double click to reset zoom in MS
- GC Image R2.0 allows users to configure the blob information in the title
of MS Viewer.
- GC Image R2.0 allows users to copy the selection in MS Viewer to the
clipboard as various formats.
- GC Image R2.0 provides a setting to save a combined CSV table in Summary
- GC Project R2.0 reports detailed run time for each processing step in
Process Runs and Auto Process.
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 © 2001–2009
by GC Image, LLC, and the University of Nebraska.