ncl_hsvrgb - Man Page

CALL HSVRGB (H, S, V, R, G, B)

#include <ncarg/ncargC.h>

void c_hsvrgb (float h, float s, float v, float *r,
float *g, float *b)

H

(REAL, input, range [0.,360.) )  represents the hue of the input color in HSV color space.

S

(REAL, input, range [0.,1.])  represents the saturation value of the input color in HSV color space.  Saturation is a measure of how much white light is mixed with the color. Saturation values of 0. represent grays (with a gray value equal to the value V). Saturation values of 1. are fully saturated colors. The hue is undefined when S=0. The fully saturated pure hues occur when S=1. and V=1.

V

(REAL, input, range [0.,1.])  represents the value of the input color in HSV color space.

R

(REAL, output, range [0.,1.])  represents the red intensity component of the output color in RGB color space.

G

(REAL, output, range [0.,1.])  represents the green intensity component of the output color in RGB color space.

B

(REAL, output, range [0.,1.])  represents the blue intensity component of the output color in RGB color space.

The C-binding argument descriptions are the same as the FORTRAN  argument descriptions.

Use the ncargex command to see the following relevant examples:  coex03, tcolcv, fcce02.

To use HSVRGB or c_hsvrgb, load the NCAR Graphics libraries ncarg, ncarg_gks, and ncarg_c, preferably in that order.  

See the colconv man page for a description of all Colconv error messages and/or informational messages.

Online: colconv, hlsrgb, rgbhls, rgbhsv, rgbyiq, yiqrgb, ncarg_cbind.

Hardcopy: NCAR Graphics Fundamentals, UNIX Version

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