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	Product Overview Citrin Chart Types Worksheet Features & Import Capabilities Regression/Curve Fitting Worksheet Formula Editor Graphic Export Chart Customizing Tools Technical Support Purchasing a License

Citrin™ 1.x Product Overview

Citrin is a low-cost, high performance Mac OS X Universal application for interactive scientific graphing and curve fitting, providing:

Commonly used charts, such as scatter & line series, bar, column, area, 3-D (column, pyramid, prism, area and band), ternary scatter, pie, polar, box & whisker, histograms, probability charts, etc.
Numerous customizing tools, full Unicode support, diverse graphic export formats (PDF, PICT vector graphics, and bitmaps such as PNG, JPEG, TIFF, BMP, SGI, TGA, etc.), and support for drag & drop
Native worksheets that can import and store large data sets from diverse data formats
Curve fitting with built-in functions, as well as a module for user-defined, non-linear curve fitting with an interactive graphical interface
Flexible capabilities for applying error bars

Ease of Use of Citrin
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An Overview of Citrin 1.x Features

Citrin Graphic Viewer and Charts

The graphic viewer is Citrin's interface for data visualization and charting.

The graphic viewer can work simultaneously with multiple worksheets, and has a real-time, two way interaction with data.
The graphic viewer toolbar provides tools for interacting with data, zooming, moving and resizing graphics, creating tables and single-line text, and more.
Saved graphic viewer files do not store static blocks of data; they store references to the source documents containing the data. Hence, when you change and save the source documents, all graphic viewers that contain a reference to the modified data source will be updated.
The graphic sublayers manager allows creating multiple charts on each viewer page, overlaying X-Y charts, changing the stacking order of graphics, hiding/showing graphic objects, locking/unlocking objects in specific positions on the viewer page, modifying the transparency of fills, lines and markers, and more.

Curve Fitting and Regression

Curve fitting (pre-defined and user-defined) methods include:

Linear (X on Y and thru zero)
Polynomial
Exponential
Logarithmic
Power
Cubic spline interpolation
User-defined, non-linear curve fitting:
- Interactive graphical interface
- Using Levenberg-Marquardt "full Newton-type" method
- Providing a library of functions (any calculated new functions and their parameters can be stored as a library function for later use)

Error Bars

Adding error bars to charts allows a graphical display of the statistical probability of errors, the experimental and analytical errors, the data outliers, etc.

In Citrin, error bars can be applied to:
- Binary scatter
- Scatter series and line series charts (X-Y, double-Y, double-X, or double X-Y series)
- Column and bar charts (including stacked and clustered columns and bars)
- Area and stacked area charts
Error bars can be symmetrical or asymmetrical.
Error bars can be based on:
- Standard error
- Standard deviation
- Fixed values or values of a variable (e.g., calculated errors, etc.)

Citrin Worksheets

Worksheets are Citrin's data storage mechanism, and provide numerous data management functions and utilities. They also act as dynamic data sources for data analysis and visualization. Features include:

Tools for quality control of numeric data
Capabilities for sorting and transposing data, reordering rows or columns, etc.
Diverse import capabilities
Support for numeric, text, date and time data types
A built-in formula editor
A notebook for storing notes (e.g., literature references and other information)

Data Import Support

Citrin provides tools for importing:

Excel format (Excel 95 and above)
Delimited ASCII text files (tab, comma, semicolon, space, etc.)
Fortran formatted data
Delimited data matrix (numeric) (tab, comma, semicolon, space, etc.)
Binary numeric matrix formats (8 bit, 16 bit, 32 bit, and 64 bit data)

Drag & Drop Between Citrin and Other Applications

Support for drag & drop from Citrin into applications that support the operation (e.g., Keynote, Word, PowerPoint, Photoshop, etc.)
Support for drag & drop from other applications (e.g., LaTeX Equation Editor, graphic files from Finder, etc.) into Citrin

Graphic File Export Support

Supported graphic file export formats include:

Full PDF support for export and clipboard (when the viewer is in Quartz mode)
PICT vector graphics ((when the viewer is in QuickDraw mode)
Bit images (can be generated by both Quartz and QuickDraw):

BMP
JPEG
PNG
SGI Image
Bitmap PICT
TGA
TIFF
QuickTime Image
Photoshop

Citrin's Dynamic Nature

Citrin benefits from the pipeline design of Aabel (the Gigawiz flagship product), allowing real-time, two-way interaction between charts and their source worksheets, and between charts in the same or in different graphic viewers.

It enables simultaneous data analysis/data visualization from multiple data sources using a single interface, without the need to merge the data into a single worksheet.
Saved graphic viewer files are not static graphic files. They are dynamically linked to the data sources used to create the chart(s). As a result:
- Modifying the content of data sources will be immediately updated on the charts
- Each time you open a viewer document, all data source changes will be automatically updated on the charts
Citrin is the first low-cost commercial application that allows data brushing to highlight data interrelationships.

Customizing Tools for Data Representation

Numerous, easy to use tools are available for chart customizing:
Unicode Support

A palette that holds 176 Unicode characters/symbols/glyphs is available for data representation. Each item in this palette can be replaced by a Unicode character/glyph from the System character palette, and can be scaled from 50 to 200% of the initial size (100%) in 20 steps.
Citrin supports Unicode for storing data in worksheets, for graphing data, and for creating tables, and text lines.

Markers and Lines for Data Representation

Citrin markers: A palette with 175 marker symbols, each of which can be scaled from 50 to 200% of the initial size (100%) in 20 steps.
Line attributes: Controls for selecting different line types, thickness, and color.
Unicode glyphs/symbols.

Markers and Lines for Data Representation

Citrin markers: A palette with 175 marker symbols, each of which can be scaled from 50 to 200% of the initial size (100%) in 20 steps.
Line attributes: Controls for selecting different line types, thickness, and color.
Unicode glyphs/symbols.

Customizing Chart Axis Attributes

Flexible customizing tools are available for modifying the chart axis attributes, e.g., linear or logarithmic scale, forward or reverse, the axis range, changing extended date or numeric display formats, or modifying the attributes of axis lines, titles, labels, etc.

Color Management

The color palettes and color gradient palettes in Citrin are represented using default colors. However, you can freely change the items of a palette or create new color gradients from simple, complex, or pure colors, with a few clicks of the mouse.

Managing Transparency

The transparency manager allows separate control of transparency in fills, lines, and markers.

Quartz Patterns

Quartz patterns are available for customizing fills.
Quartz patterns are vector drawings (stencil patterns) and are designed for use with the Quartz graphic system and PDF.