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Graphing and analysis software designed for scientists and engineers. QtiPlot - is a graphing and analysis software for scientists and engineers. According to the author of QtiPlot his purpose was to develop a free, platform independent clone of Origin. The result is still far away from it's model, but there's a "wish to" list which he is constantly working on. The program uses the GNU Scientific Library 1.6, for 2D-graphing Qwt 0.2.4, and for 3D-visualization Qwt3D 0.2.5 - these libraries will be installed by this installer. If you would like more information about QtiPlot please see the ReadMe file inside the installation folder. Here are some key features of "QtiPlot": · QtiPlot is cross-platform: it works on all systems supported by Qt, including Windows, Linux/Unix and Mac OS X systems. · QtiPlot is fully scriptable via Python, which gives you the possibility to use powerfull existing scientific tools, such as SciPy, thus bringing unlimited data analysis power. · OpenGL based 3D plotting: height maps, user defined functions and parametric surfaces. · Publication quality 2D plots: Error Bars, Multilayer Plots, Bar Plots, Pie Plots, Vector Plots, Contour and Image Plots. · Statistical Plots: Box/Whiskers Diagramms, Histograms. · Easy export of plots to vector formats (EPS, PS, PDF, SVG) and to various raster image formats (BMP, JPG, PNG, TIFF etc ...) · Powerful and versatile spreadsheets and calculations in column-logic. · Easy ASCII-Import/Export of single or multiple files. · Linear and nonlinear curve fitting with weighting and estimation of statistical errors of the fit-parameters. The accuracy of QtiPlot can be verified with the Statistical Reference Datasets Project of the National Institute of Standards and Technology (NIST). · Multi-peak fitting with Gaussian and Lorentzian peak profiles. · Built-in data analysis routines: statistics, sorting, FFT, data smoothing (Savitzky-Golay, FFT smoothing, and moving window average), data filtering (low/high/band pass and band block filters), convolution/deconvolution, correlation, interpolation, numerical integration/differentiation, etc... · Matrices optimized for image analysis. · Templates support: all the settings for plots (2D/3D), tables and matrices can be saved to ASCII files and restored later on for a fast editing process. · Project files based on folders, a powerful project explorer with extensive built-in features: drag and drop, searching facilities, etc... · Import of Origin 7.5 files. Requirements: · an installation of Trolltech's Qt/Mac 3.3 C++ framework (a download bookmark for an installer package of Qt/Mac 3.3.4 GPL-Edition is provided with the installer). Limitations: · You can't save your work to project files. · You can't use it for more than 10 minutes per session. What's New in This Release: · Easy import of data from Excel workbooks (.xls files) and from Open Document Format spreadsheets (.ods files). · Lowess data smoothing (thanks to Jonas B?hr). · QtiPlot now recognizes a lot of fundamental constants: the user can type pi, Pi, e, c, h, hbar, k, Na, g, etc... in a spin box and the constant is automatically calculated (see the user manual fore more details). · Implemented an Origin-like image profile plot tool. · Added two new zoom tools for horizontal and vertical zooming/panning. · Added two format options for time scales: "M" (used to display minutes as: h*60 + m) and "S" (used to display the total number of seconds). · Improved copy/paste of plot layers. · Improved export to the SVG format. · Modified the layer geometry dialog so that it operates on the layer canvas area, thus making the alignment of layers a lot easier. · Added the possibility to customize x/y zero lines in an Origin-like manner: they have the same pen as the yLeft/xBottom axes. · Fixed the behavior of data reader tools with respect to non numerical data.

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