Gwyddion A modular program for SPM (scanning probe microscopy) data visualization and analysis.
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data visualizer visualize visualizer analyze data analyzer image analysis

Gwyddion Description

A modular program for SPM (scanning probe microscopy) data visualization and analysis. Gwyddion is primarily intended for analysis of height fields obtained by means of scanning probe microscopy techniques (AFM, MFM, STM, SNOM/NSOM), however it can be generally used for any other height field and image analysis.Gwyddion is Free and Open Source software, covered by GNU General Public License. It aims to provide multiplatform modular program for 2D data analysis that could be easily extended by modules and plug-ins. Moreover, the status of free software enables to provide source codes to developers and users, which makes the further program improvement easier.Gwyddion works on Mac OS X, GNU/Linux, Microsoft Windows, and FreeBSD operating systems on common architectures, all systems can be used also for development.Its graphical user interface is based on Gtk+ and port to other systems supported by Gtk+ should be possible. Here are some key features of "Gwyddion": · visualization: false color representation with different types of mapping · shaded, logarithmical, gradient- and edge-detected, local contrast representation, Canny lines · OpenGL 3D data display: false color or material representation · easily editable color maps and OpenGL materials · basic operations: rotation, flipping, inversion, data arithmetic, crop, resampling · leveling: plane leveling, profiles leveling, three-point leveling, facet leveling, polynomial background removal, leveling along user-defined lines · value reading, distance and angle measurement · profiles: profile extraction, measuring distances in profile graph, profile export · filtering: mean, median, conservative denoise, Kuwahara, minimum, maximum, checker pattern removal · general convolution filter with user-defined kernel · statistical functions: Ra, RMS, projected and surface area, inclination, histograms, 1D and 2D correlation functions, PSDF, 1D and 2D angular distributions, Minkowski functionals, facet orientation analysis · statistical quantities calculated from area under arbitrary mask · row/column statistical quantities plots · ISO roughness parameter evaluation · grains: threshold marking and unmarking, watershed marking · grain statistics: overall and distributions of size, height, area, volume, boundary length, bounding dimensions · intergral transforms: 2D FFT, 2D continuous wavelet transform (CWT), 2D discrete wavelet transform (DWT), wavelet anisotropy detection · fractal dimension analysis · data correction: spot remove, outlier marking, scar marking, several line correction methods (median, modus) · removal of data under arbitrary mask using Laplace or fractal interpolation · automatic xy plane rotation correction · arbitrary polynomial deformation on xy plane · 1D and 2D FFT filtering · fast scan axis drift correction · mask editting: adding, removing or intersecting with rectangles and ellipses, inversion, extraction, expansion, shrinking · simple graph function fitting, critical dimension determination · force-distance curve fitting · axes scale callibration · merging and immersion of images · tip modelling, blind estimation, dilation and erosion What's New in This Release: · Application · Translations updated: Czech, French, Russian. · About dialog shows optional features compiled into the specific build. · Libraries · libgwyprocess: Missing data field invalidation after Laplace iteration was added, fixing wrong color scales after Laplace interpolation data removal. · libgwyddion: Lorentzian fitting preset parameter estimator was corrected. · libgwyprocess: Broken Fourier transformations of large prime sizes with stride larger than one were fixed in simpleFFT (does not affect FFTW). · libgwydraw: GwySelection has a new virtual method crop(). · libgwydraw: Function for filtering objects in GwySelection was added. · libgwyapp: Layout of previews in file dialogs, broken by Gtk+ 2.16, was corrected. · libgwydgets: GwyDataView provides real offsets of displayed data field. · libgwydgets: Truncated logarithmic axes were really fixed. · Modules · Selection manager tool (new): Copies selections to other chanels and files. · FFT profile (new): Reads radial FFT modulus profiles. · PSIA: Format version 1.0.2 is supported. · OLS, JPK: GwyTIFF is used instead of libTIFF for file loading. This should fix a number of TIFF-related problems, namely on MS Windows. · RHK SM3: Bug that prevented loading of some SM3 files was fixed. · WSxM: Files produced by Nanonics AFM are supported. · Pixmap export: libTIFF is no longer used, TIFF files are written directly. · Rawfile: Support for 64bit integer built-in types was added. · Rawfile: Updating the preview with Alt+U uses the new value of just-editted field. · Layer modules: Support for crop() method was added. · Point layer: Can display selection as vectors from the origin (new property "draw-as-vector"). · Other · Win32 installer offers to choose the language to use. · Gwyddion no longer directly uses libTIFF on any platform (it used to be optionally linked with libTIFF).

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