How to set a colorbar using specific RGB values and limit values? (2024)

The attached file contains a contour plot code which gets the following colorbar:

Please run the attached code to see the colorbar I'm currently obtaining (using a jet colorbar).

% colorbar question

clear;clc

A=[1.941 1947.138 625.500 0.001599 14.014

5.939 1947.077 1289.900 0.000775 19.300

9.938 1947.015 581.960 0.001718 22.987

13.936 1946.950 758.890 0.001318 28.259

17.933 1946.882 1333.500 0.000750 31.257

21.931 1946.812 217.800 0.004591 20.110

25.929 1946.739 446.300 0.002241 23.991

29.926 1946.662 261.310 0.003827 20.253

33.260 1945.329 293.540 0.003407 21.296

36.326 1943.093 4547.300 0.000220 18.993

40.058 1942.137 638.980 0.001565 14.785

44.057 1942.110 268.030 0.003731 18.367

48.056 1942.084 248.240 0.004028 18.609

52.055 1942.056 374.330 0.002671 28.995

56.054 1942.028 1213.400 0.000824 23.916

60.054 1941.998 126.760 0.007889 27.747

64.053 1941.968 628.800 0.001590 16.702

68.051 1941.937 316.540 0.003159 25.726

72.050 1941.905 198.610 0.005035 26.283

76.049 1941.871 246.990 0.004049 21.835

80.048 1941.836 216.320 0.004623 16.395

84.047 1941.800 150.220 0.006657 17.376

88.045 1941.762 234.310 0.004268 13.832

92.044 1941.722 28.310 0.0353 5.897

1.824 1945.123 392.850 0.002546 14.733

5.820 1945.023 159.100 0.006285 18.993

9.816 1944.919 581.530 0.001720 21.716

13.811 1944.812 512.470 0.001951 21.257

17.807 1944.699 214.740 0.004657 32.690

21.802 1944.582 7111.000 0.000141 19.865

25.796 1944.459 40.650 0.0246 19.236

29.791 1944.330 408.570 0.002448 21.704

33.139 1943.253 20.157 0.0496 16.667

36.228 1941.406 45.401 0.0220 19.619

39.965 1940.547 36.044 0.0277 21.503

43.963 1940.498 517.490 0.001932 22.070

47.961 1940.447 503.470 0.001986 20.255

51.959 1940.395 640.280 0.001562 29.378

55.957 1940.341 148.020 0.006756 23.256

59.954 1940.285 695.240 0.001438 25.728

63.951 1940.227 52.922 0.0189 23.278

67.949 1940.167 74.723 0.0134 16.712

71.946 1940.104 202.610 0.004936 14.442

75.943 1940.038 162.530 0.006153 22.836

79.939 1939.970 313.060 0.003194 31.804

83.936 1939.898 199.050 0.005024 17.033

87.932 1939.824 152.240 0.006569 13.796

91.929 1939.745 125.130 0.007992 7.540

1.701 1943.011 384.880 0.002598 15.792

5.696 1942.879 213.860 0.004676 18.482

9.689 1942.743 443.110 0.002257 20.597

13.683 1942.602 535.490 0.001867 20.139

17.676 1942.455 169.240 0.005909 20.209

21.669 1942.302 642.590 0.001556 16.612

25.662 1942.142 422.030 0.002369 17.110

29.654 1941.976 4123.000 0.000243 19.104

33.014 1941.106 24.004 0.0417 17.199

36.123 1939.584 15.608 0.0641 20.787

39.865 1938.813 1870.500 0.000535 21.935

43.861 1938.743 431.630 0.002317 22.631

47.858 1938.670 25.172 0.0397 20.826

51.854 1938.595 567.980 0.001761 26.448

55.851 1938.517 173.370 0.005768 24.556

59.847 1938.437 382.260 0.002616 25.764

63.843 1938.353 356.150 0.002808 25.527

67.838 1938.266 341.330 0.002930 17.118

71.834 1938.176 258.650 0.003866 11.283

75.829 1938.082 29.999 0.0333 11.573

79.824 1937.984 311.460 0.003211 30.600

83.819 1937.883 227.970 0.004387 17.021

87.814 1937.776 151.200 0.006614 13.476

91.808 1937.665 151.010 0.006622 8.100

1.567 1940.692 384.870 0.002598 16.725

5.559 1940.534 386.550 0.002587 18.166

9.552 1940.372 498.560 0.002006 19.432

13.544 1940.203 537.360 0.001861 19.138

17.535 1940.030 168.210 0.005945 18.321

21.527 1939.850 356.010 0.002809 16.273

25.518 1939.664 406.370 0.002461 16.747

29.508 1939.471 4157.500 0.000241 18.232

32.879 1938.771 26.815 0.0373 18.019

36.003 1937.528 15.534 0.0644 21.087

39.750 1936.841 3401.900 0.000294 22.145

43.746 1936.750 618.790 0.001616 22.334

47.741 1936.655 35.707 0.0280 20.814

51.736 1936.557 281.230 0.003556 23.143

55.731 1936.457 175.170 0.005709 23.629

59.726 1936.353 164.400 0.006083 24.666

63.720 1936.245 201.820 0.004955 25.196

67.714 1936.134 339.340 0.002947 17.284

71.708 1936.018 322.740 0.003098 10.790

75.702 1935.899 32.243 0.0310 10.311

79.696 1935.775 97.517 0.0103 14.638

83.689 1935.646 151.340 0.006608 14.587

87.682 1935.512 150.830 0.006630 11.879

91.675 1935.373 152.300 0.006566 8.259

1.418 1938.141 384.210 0.002603 17.366

5.410 1937.956 408.330 0.002449 18.067

9.400 1937.766 636.350 0.001571 18.735

13.391 1937.572 633.730 0.001578 18.507

17.381 1937.373 534.120 0.001872 17.722

21.371 1937.168 523.520 0.001910 16.456

25.361 1936.959 664.740 0.001504 16.666

29.350 1936.745 4573.900 0.000219 17.556

32.731 1936.224 30.296 0.0330 17.962

35.873 1935.295 31.815 0.0314 20.403

39.627 1934.719 3264.300 0.000306 22.167

43.621 1934.598 1165.700 0.000858 21.976

47.614 1934.474 267.040 0.003745 20.134

51.608 1934.347 282.380 0.003541 19.813

55.601 1934.216 187.840 0.005324 19.716

59.594 1934.081 125.860 0.007945 19.951

63.586 1933.943 126.510 0.007905 20.009

67.579 1933.801 209.800 0.004766 16.208

71.571 1933.654 271.320 0.003686 10.129

75.563 1933.503 87.792 0.0114 9.139

79.555 1933.348 90.154 0.0111 9.242

83.546 1933.187 136.170 0.007344 9.380

87.537 1933.022 150.800 0.006631 9.006

91.528 1932.852 154.120 0.006488 8.047

1.256 1935.343 378.440 0.002642 17.755

5.246 1935.143 445.620 0.002244 18.090

9.236 1934.940 1464.600 0.000683 18.402

13.226 1934.732 1486.600 0.000673 18.164

17.215 1934.520 1464.900 0.000683 17.438

21.205 1934.305 1455.700 0.000687 16.525

25.194 1934.085 1474.000 0.000678 16.513

29.182 1933.862 4996.600 0.000200 16.802

32.569 1933.436 38.394 0.0260 16.726

35.722 1932.685 46.085 0.0217 17.921

39.479 1932.177 1215.300 0.000823 22.366

43.472 1932.038 1160.500 0.000862 21.779

47.464 1931.896 579.430 0.001726 18.674

51.457 1931.749 492.920 0.002029 16.120

55.449 1931.599 324.460 0.003082 13.764

59.441 1931.446 118.570 0.008434 12.013

63.432 1931.289 116.440 0.008588 11.813

67.424 1931.127 166.740 0.005997 11.466

71.415 1930.962 206.150 0.004851 8.868

75.406 1930.792 88.028 0.0114 7.657

79.396 1930.619 88.969 0.0112 7.558

83.387 1930.440 129.280 0.007735 7.873

87.377 1930.258 151.360 0.006607 7.960

91.367 1930.070 161.070 0.006208 7.603];

X = A(:,1);

Y = A(:,2);

Z = A(:,3);

[xq,yq]=meshgrid(linspace(min(X),max(X),100),linspace(min(Y),max(Y),100));

zq=griddata(X,Y,Z,xq(:),yq(:),'cubic');

figure()

[c,h]=contourf(xq,yq,reshape(zq,100,100));

hold on

colormap(jet)

h = colorbar;

set( h, 'YDir', 'reverse' );

I would like to obtain the same contour plot but with these colors and values for the ploting colorbar, i defined also RGB values for eacth limit value.

colorbarlimits=[6.5696e+000

9.4236e+000

1.3517e+001

1.9390e+001

2.7813e+001

3.9896e+001

5.7228e+001

8.2089e+001

1.1775e+002

1.6890e+002

2.4228e+002

3.4753e+002

4.9851e+002

7.1508e+002

1.0257e+003

1.4713e+003];

RGB=[153 0 0

204 0 0

153 76 0

204 102 0

153 153 0

204 204 0

76 153 0

102 204 0

0 153 0

0 204 0

0 153 76

0 204 102

0 76 153

0 102 204

0 0 153

0 0 204];

How to set a colorbar using specific RGB values and limit values? (2024)
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