
GPA (Geometrical Phase Analysis) plug-in for Gatan DigitalMicrograph
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Version 4.14
June 2026

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Contact

General enquiries on the GPA for DigitalMicrograph should be sent to: 
HREM Research Inc.
14-48 Matsukazedai
Higashimatsuyama 
Saitama 355-0055
Japan

email: mailto:support@hremresearch.com
Website: http://www.hremresearch.com /

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Files
	- GPA64.gtk: compiled script file
	- GPA64.dll: dll file
	- GPA Phase Manual v4.0.pdf (help file) and some test images
	- gpa4dm.pdf: pdf manual 
	- gpa4dm.chm: quick reference file (compiled html)
	- ReadMe64.txt: this file

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Installation
	Installation is straightforward. Just copy the files to the following folders.
	Go to \Gatan\Plugins folder: GPA64.gtk, GPA64.dll
	Go to \Gatan\Help folder: gpa4dm.pdf, gpa4dm.chm
	
[NOTE] These Gatan folders may be found at two places, namely in "Program files" and/or "ProgramData" 
of Windows 7.  Since the Program files folder is no longer accessible to regular users, Gatan 
recommends to use the latter ProgramData folder to install the plug-in and help files. 
	
[NOTE] IPU plug-in and HREM Mouse tool plug-in should be also installed to run this plug-in.
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Release Notes
4.14   Add Fringe spacing and improve Repeat Project
4.13.1 Fixing the bag on Setup dialog for Define Reference
4.13   Update Repeat Project and Scan distortion correction
4.12.1 Scan correction works with the binning
4.12   Scan-line correction for the original STEM image
4.11.1 Improvement of power spectrum calculation
4.11   Accuracy of scan distortion correction has been improved
4.10   Show Reference Area command is added
4.9    Scan distortion correction using multi-reference area
4.8    Modifications for GMS 3.x
4.7.1  bug-fix for 2D displacement command
4.7    1D and 2D displacement commands
4.6    DLL optimization for GMS 2.x by using INTEL C++ Compiler
4.5    Scan distortion correction
4.0.1  Windows 8 supported by a 64bit version 
4.0    strain from multi-phases
3.1    GMS 2.0 support
3.0    Polynomial fit for Lens distortion, Complex input image, Rotatable ROI
2.0    Second version that works with IPU/HREM Mouse plug-ins
1.0    The first release