Virtual Colour Atlas: Help Menu

Colour Order Systems

Colour Systems

Colour Ranges

Additional Functionality

Link to Virtual Colour Atlas App - Launches the app in a new tab

Toolbar Controls

AUTOSIZE.png
Chart auto-size ON/OFF

When ON the chart will be scaled to fit within the available screen space, when OFF the chart is generated full-size based on the sample size and separation (if this exceeds the available screen size then the chart is displayed within a scrollable window).

EXTENDED.png
Show extended samples ON/OFF

When OFF the chart displays only the sample points that are present in the physical atlas, when ON interpolation and/or extrapolation algorithms are applied to the atlas sample points to generate additional samples either to extend the sample base beyond the original set or fill in gaps.

SWAPAXES.png
Swap axes ON/OFF

Systems with 90 degree opponent (x/y like) axes (CIE, CIELab, CIELuv, Colorcurve and OSA-UCS) have the option to be displayed with their axes inverted (i.e. toggling this option swaps the horizontal and vertical axes).  Note: Only applies when Auto-sizing is switched OFF.

HALFPOINTS.png
Show half-point samples ON/OFF

Samples in an atlas are displayed in a regular arrangement.  Some systems (Colorcurve and OSA-UCS) have additional samples (half-point samples) that do not adhere to this regular arrangement and this option switches the display of these samples ON or OFF.

PREVIOUSCHART.png
NEXTCHART.png
Previous & Next Chart

Moves to the previous or next chart in the current sequence based on the underlying atlas and the selected viewing plane.  For example: for Munsell Hue 5YR this will be 2.5YR (previous) or 7.5YR (next), and for Munsell Chroma 6 this will be 4 and 8.

BACKGROUND.png
Background Colour

Opens a drop-down dialog that allows for the specification of the background colour the charts are displayed against.

ZoomOut.png
ZoomIn.png
Zoom Out & Zoom In

Most Charts (not RAL or BS:5252) can be zoomed.  Zooming calculates the values of the intermediary points between the known sample points by interpolation - increasing the number of samples displayed.  Zoom at 100%, 200%, 400% and 800%.

SAMPLE.png
Sample Size & Spacing

Opens a dialog that allows for the specification of the shape (rectangle or circle) and size (width and height, or radius) of the samples in a chart, and the spacing (gap) between the samples. Can be set for any system (not a global setting).

Sample Size & Spacing

Due Q4 2021