Pcolor Plot returning error Color data input must be a matrix.

I keep getting the above error with my code, i am trying to use the pcolor funtion to plot cell dominance, from z which is a 546x1 double.

x1 = 1:26;

y1 = 1:21;

[X1,Y1] = meshgrid(x1,y1);

z = Ind(:,1);

i = pcolor(x1, y1, z);

Answer 1

[VBBV]

 h = pcolor(X1, Y1, z);  % use X1, Y1 instead of x1 , y1, z must be 21x26 matrix 

[Gurpreet Sidhu]

still gives the same error

[VBBV]

x1 = 1:26;
y1 = 1:21;
[X1,Y1] = meshgrid(x1,y1);
z = rand(21,26)

z = 21×26

0.1888 0.9982 0.2816 0.2672 0.7953 0.1147 0.6820 0.3750 0.8584 0.4191 0.6513 0.5506 0.3321 0.8901 0.6155 0.7335 0.1466 0.2384 0.0171 0.5042 0.2394 0.4561 0.3932 0.2752 0.6974 0.1031 0.4723 0.8583 0.8495 0.9722 0.8484 0.9573 0.9113 0.8421 0.7342 0.2141 0.8557 0.9822 0.0389 0.7136 0.2123 0.5461 0.6856 0.2915 0.4596 0.5401 0.4219 0.3357 0.4511 0.4680 0.9062 0.9302 0.8884 0.3787 0.3886 0.3494 0.3853 0.4297 0.8085 0.1674 0.2468 0.2919 0.8885 0.6969 0.5496 0.3333 0.2768 0.2268 0.1724 0.9669 0.6768 0.2383 0.8403 0.3709 0.9975 0.8570 0.4686 0.4797 0.7542 0.9777 0.4084 0.7667 0.6565 0.9964 0.6452 0.4857 0.2114 0.2795 0.2712 0.1581 0.0282 0.7049 0.3910 0.5266 0.2310 0.7170 0.4156 0.5564 0.2319 0.7203 0.6903 0.4689 0.5080 0.6725 0.0708 0.4481 0.2072 0.5526 0.1250 0.2533 0.8394 0.8890 0.4680 0.2118 0.6384 0.7210 0.5506 0.1634 0.8253 0.5629 0.4149 0.7974 0.3239 0.8546 0.5702 0.9668 0.3816 0.8181 0.6979 0.8209 0.2177 0.4071 0.7707 0.0964 0.2662 0.7966 0.0310 0.9695 0.4748 0.7575 0.5161 0.8137 0.9029 0.8458 0.1024 0.9861 0.6043 0.4503 0.1990 0.5854 0.6034 0.0120 0.1755 0.8278 0.6379 0.2990 0.2316 0.0929 0.3398 0.2779 0.6366 0.8083 0.0270 0.0752 0.1256 0.2551 0.8479 0.6320 0.6736 0.3915 0.6401 0.4456 0.9486 0.6970 0.8398 0.3892 0.4578 0.7566 0.1164 0.5244 0.4540 0.9588 0.9550 0.3150 0.3080 0.8580 0.2221 0.6122 0.9120 0.3432 0.6728 0.3726 0.8293 0.4377 0.1408 0.3379 0.0531 0.9126 0.9365 0.8051 0.7888 0.7231 0.6959 0.0759 0.6114 0.5676 0.9433 0.2048 0.4366 0.2252 0.9743 0.0459 0.3417 0.8460 0.6047 0.9179 0.5167 0.3725 0.6212 0.6349 0.9735 0.2232 0.0884 0.6001 0.0553 0.1379 0.0765 0.4224 0.0661 0.8758 0.0332 0.7527 0.1574 0.8150 0.1330 0.5853 0.0180 0.9696 0.1872 0.0895 0.0429 0.0119 0.9494 0.1353 0.1568 0.1998 0.8354 0.5755 0.2522 0.3130 0.0366 0.7725 0.4321 0.9243 0.7337 0.2372 0.1757 0.2391 0.3821 0.9804

h = pcolor(X1, Y1, z);