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Overview
Key Features
2D
Plot Types
3D Plot Types
Stats Plot Types
Importing Data
2D Gallery
3D Gallery
Animations
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Key Graphis features include:
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15 2D (1 independent
variable) Plot Types consisting
of nine "visualization" plot types, allowing the
graphing of line, area, bar, contour, text and error bar plots. In
addition, six "data analysis" plot types are available for plotting
statistical distributions, histograms, probability plots, box plots, and for
curve fitting. 2D curves can be plotted in Cartesian, polar or
parametric coordinates.
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12 3D (2 independent variables) Plot Types
allowing creation of surface plots, bar plots, line plots, scatter
plots, 3D object plots, and mesh plots. The 3D object plot allows
common 3D objects such as cubes, cylinders and spheres to be
positioned in 3D space, while the mesh plot provides the capability
to draw any 3D object which can be defined as a set of vertices and
elements. A wide range of options is available within the plot
types. For example, surfaces can be colourmapped, texture mapped,
transparent, display contours, and have up to 8
translate/rotate/scale operations applied to them. Annotation can be
added to a 3D graph using a 3D text plot. 3D curves can be plotted
in Cartesian, polar, cylindrical or parametric coordinates.
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Nonlinear Regression.
In addition to the linear regression provided
by Graphis' standard regression plot, the graph plotting software
provides a full multidimensional nonlinear regression tool.
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Analytical Curve Definition.
Curves can be defined by entering expressions into Graphis. This
feature is implemented using the VBScript scripting language, but
remains largely transparent to the user. For example, to plot
sin(x), simply enter y = sin(x). A curve defined in this way may be
as simple as one line, or may consist of a large number of lines.
Complex formulae can be evaluated with knowledge of just a few basic
scripting rules. You can create your own library of VBScript
functions in a text file which Graphis loads automatically. These
functions can then be called when defining a Graphis curve
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Tabular Curve Definition.
Tabular curves are those for which the data is entered into a table.
The data for a tabular curve may be entered directly into its table,
or may be imported from another source. To aid in this process,
Graphis provides spreadsheets into which data can be imported from
character - delimited text files using an Excel-like data import
feature. Analytical and tabular curves can be plotted on the same
graph allowing comparison of empirical and analytical data
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Colourmap Editor.
In
addition to providing "built-in" colourmaps, Graphis provides a
colourmap editor tool which can be use to create colourmaps based on
either RGB or HSL components
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Full control of all graphical elements,
e.g. values of axis extents and divisions, colour and font of axis
labels and titles, colour and settings for grid, walls, legend,
title, colour key, graph background. In addition to the automatic
axis tick labelling provided by Graphis, you can add your own ticks
and tick labels at arbitrary positions. Log scaling and Date/Time
Axis Labelling is available on 2D graphs
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High Quality OpenGL Graphics
is used for 3D graphs. Interactive manipulation of 3D graph
quantities such as viewing position, scaling,
surface plotting and lighting is provided.
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