Algorithm (Workflow)

This function, rgbofall, is designed to convert various input formats into RGB color values represented as doubles between 0 and 1. The function can handle character inputs, numeric arrays, and other formats, converting them into a standardized RGB format.

Input Parameters

• x: The input can be a character (e.g., 'b'), a string of characters (e.g., 'yg'), or a numeric array (e.g., [255 0 64]).

Output

• rgb: The output is an RGB value where each component is a double between 0 and 1.

Algorithm Steps

1. Initialize a color table ctab with the characters 'kbgcrmyw', representing black, blue, green, cyan, red, magenta, yellow, and white.
2. Check if the input x is a character array:
   • Determine the number of characters nc in x.
   • Initialize an nc by 3 matrix rgb with NaN values.
   • For each character in x, convert it to an RGB value using the char2rgb function and store it in the rgb matrix.
   • Normalize the rgb values by dividing by 255.
3. If x is a numeric array with three columns and any value greater than 1:
   • Normalize the array by dividing by 255 to convert it to a range between 0 and 1.
4. If x is a numeric array with three columns and all values are less than or equal to 1:
   • Return the array as is, assuming it is already in the correct range.
5. If x is a single row or column vector:
   • Determine the number of elements nc in x.
   • Initialize an nc by 3 matrix rgb with NaN values.
   • For each element in x, map it to a character in ctab and convert it to an RGB value using char2rgb.
   • Normalize the rgb values by dividing by 255.
6. If none of the above conditions are met, assume x is already in the correct RGB format and return it as is.