octave - 如何为散点函数中的每个值分配颜色 - GNU Octave

Question

如何使用 GNU Octave 中的 scatter 函数为每个绘制值分配颜色？

Answer 1

这是一个很好的说明性示例:

X = linspace(0, 4 * pi, 100);                       % Create points (100 elements)
Y = 100 * sin(X); 

S = Y + 100;                                        % Sizes array. All values need 
                                                    % to be larger than 0

C = [linspace(0,1,100); ones(1,100); ones(1,100)]'; % create hsv triplets at full 
                                                    % saturation and value that
                                                    % cover the whole colour 
                                                    % (i.e. hues) spectrum

C = hsv2rgb(C);                                     % convert to rgb triplets; to
                                                    % be used as a 'colour array'

scatter(X,Y,S,C,'filled','MarkerEdgeColor','k');    % fill bubbles, black border