How to reverse gradient of colormap in Matlab?

Question

Yoni Verhaegen -WE-1718- 2022-3-24

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1679449-how-to-reverse-gradient-of-colormap-in-matlab

回答： KSSV 2022-3-24

I have the data below in Matlab:

However, when I plot it, yellow is given to the values close to 1 and dark blue to the values close to 0. How can I reverse the order of the colorbar, so that yellow is given to the values close to 0 and dark blue to the values close to 1?

Thanks!

x_fract=[0  0.5 1.5 2.5 3.5 4.5 5.5 6.5 7.5 8.5 9.5 10.5    11.5    12.5    13.5    14.5    15.5    16.5    17.5    18.5    19.5    20.5    21.5    22.5    23.5    24.5    25.5    26.5    27.5    28.5    29.5    30.5    31.5    32.5    33.5    34.5    35.5    36.5    37.5    38.5    39.5    40.5    41.5    42.5    43.5    44.5    45.5    46.5    47.5    48.5    49.5    50.5    51.5    52.5    53.5    54.5    55.5    56.5    57.5    58.5    59.5    60.5    61.5    62.5    63.5    64.5    65.5    66.5    67.5    68.5    69.5    70.5    71.5    72.5    73.5    74.5    75.5    76.5    77.5    78.5    79.5    80.5    81.5    82.5    83.5    84.5    85.5    86.5    87.5    88.5    89.5    90.5    91.5    92.5    93.5    94.5    95.5    96.5    97.5    98.5    99.5    100.5   101.5   102.5   103.5   104.5   105.5   106.5   107.5   108.5   109.5   110.5   111.5   112.5   113.5   114.5   115.5   116.5   117.5   118.5   119.5   120.5   121.5   122.5   123.5   124.5   125.5   126.5   127.5   128.5   129.5   130.5   131.5   132.5   133.5   134.5   135.5   136.5   137.5   138.5   139.5   140.5   141.5   142.5   143.5   144.5   145.5   146.5   147.5   148.5   149.5   150.5   151.5   152.5   153.5   154.5   155.5   156.5   157.5   158.5   159.5   160.5   161.5   162.5   163.5   164.5   165.5   166.5   167.5   168.5   169.5   170.5   171.5   172.5   173.5   174.5];
y_fract=1-((1 ./ (0.962+exp((x_fract-3.252)))));
xx=[x_fract;x_fract];
yy=[y_fract;y_fract];
zz=zeros(size(xx));
hs=surf(xx,yy,1-zz,yy,'EdgeColor','interp','LineWidth', 3); %// color binded to "y" values
colormap('parula')
colorbar
view(2) 

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Answer 1

KSSV 2022-3-24

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1679449-how-to-reverse-gradient-of-colormap-in-matlab#answer_925754

在 MATLAB Online 中打开

x_fract=[0 0.5 1.5 2.5 3.5 4.5 5.5 6.5 7.5 8.5 9.5 10.5 11.5 12.5 13.5 14.5 15.5 16.5 17.5 18.5 19.5 20.5 21.5 22.5 23.5 24.5 25.5 26.5 27.5 28.5 29.5 30.5 31.5 32.5 33.5 34.5 35.5 36.5 37.5 38.5 39.5 40.5 41.5 42.5 43.5 44.5 45.5 46.5 47.5 48.5 49.5 50.5 51.5 52.5 53.5 54.5 55.5 56.5 57.5 58.5 59.5 60.5 61.5 62.5 63.5 64.5 65.5 66.5 67.5 68.5 69.5 70.5 71.5 72.5 73.5 74.5 75.5 76.5 77.5 78.5 79.5 80.5 81.5 82.5 83.5 84.5 85.5 86.5 87.5 88.5 89.5 90.5 91.5 92.5 93.5 94.5 95.5 96.5 97.5 98.5 99.5 100.5 101.5 102.5 103.5 104.5 105.5 106.5 107.5 108.5 109.5 110.5 111.5 112.5 113.5 114.5 115.5 116.5 117.5 118.5 119.5 120.5 121.5 122.5 123.5 124.5 125.5 126.5 127.5 128.5 129.5 130.5 131.5 132.5 133.5 134.5 135.5 136.5 137.5 138.5 139.5 140.5 141.5 142.5 143.5 144.5 145.5 146.5 147.5 148.5 149.5 150.5 151.5 152.5 153.5 154.5 155.5 156.5 157.5 158.5 159.5 160.5 161.5 162.5 163.5 164.5 165.5 166.5 167.5 168.5 169.5 170.5 171.5 172.5 173.5 174.5];

y_fract=1-((1 ./ (0.962+exp((x_fract-3.252)))));

xx=[x_fract;x_fract];

yy=[y_fract;y_fract];

zz=zeros(size(xx));

hs=surf(xx,yy,1-zz,yy,'EdgeColor','interp','LineWidth', 3); %// color binded to "y" values

cmap = flip(parula) ;

colormap(cmap)

colorbar

view(2)