EVOLUTION-MANAGER
Edit File: LUV.html
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><title>R: Create LUV Colors</title> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <link rel="stylesheet" type="text/css" href="R.css" /> </head><body> <table width="100%" summary="page for LUV {colorspace}"><tr><td>LUV {colorspace}</td><td style="text-align: right;">R Documentation</td></tr></table> <h2>Create LUV Colors</h2> <h3>Description</h3> <p>This function creates colors of class “LUV”; a subclass of the virtual <code><a href="color-class.html">color-class</a></code> class. </p> <h3>Usage</h3> <pre> LUV(L, U, V, names) </pre> <h3>Arguments</h3> <table summary="R argblock"> <tr valign="top"><td><code>L, U, V</code></td> <td> <p>these arguments give the L, U and V coordinates of the colors. The values can be provided in separate <code>L</code>, <code>U</code> and <code>V</code> vectors or in a three-column matrix passed as <code>L</code>.</p> </td></tr> <tr valign="top"><td><code>names</code></td> <td> <p>a vector of names for the colors (by default the row names of <code>L</code> are used).</p> </td></tr> </table> <h3>Details</h3> <p>The <code>L</code>, <code>U</code> and <code>V</code> values give the coordinates of the colors in the CIE (1976) <i>L*u*v*</i> space. This is a transformation of the 1931 CIE XYZ space which attempts to produce perceptually based axes. Luminance takes values between 0 and 100, and the other coordinates take values between -100 and 100. The <i>a</i> and <i>b</i> coordinates measure positions on green/red and blue/yellow axes. </p> <h3>Value</h3> <p>An object of class <code>LUV</code> which inherits from class <code>color</code>. </p> <h3>Author(s)</h3> <p>Ross Ihaka </p> <h3>See Also</h3> <p><code><a href="RGB.html">RGB</a></code>, <code><a href="HSV.html">HSV</a></code>, <code><a href="XYZ.html">XYZ</a></code>, <code><a href="LAB.html">LAB</a></code>, <code><a href="polarLAB.html">polarLAB</a></code>, <code><a href="polarLUV.html">polarLUV</a></code>. </p> <h3>Examples</h3> <pre> ## Show the LUV space set.seed(1) x <- RGB(runif(1000), runif(1000), runif(1000)) y <- as(x, "LUV") head(x) head(y) plot(y) </pre> <hr /><div style="text-align: center;">[Package <em>colorspace</em> version 1.4-1 <a href="00Index.html">Index</a>]</div> </body></html>