how to add a label to a contourf plot next to colourbar?

Question

Tony Castillo 2021-6-2

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https://ww2.mathworks.cn/matlabcentral/answers/846285-how-to-add-a-label-to-a-contourf-plot-next-to-colourbar

评论： Tony Castillo 2021-6-3

采纳的回答： Joseph Cheng

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Hello mathcoders,

I want to add a label next to the colourbar for adding the variable's name, how can I do it?. The resulting plot and code is attached to these brief lines. Also I have noticed that when adding months labels it only present till June, but when remove the colourbar it prints till December, how can I solve this?.

Thanks in advance

figure(1)
irradiation_alongyear=[Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec];
contourf(irradiation_alongyear)
colorbar
ylabel('Hours of the day', 'Fontsize', 14)
xticklabels(LastName)
title('Irradiation distribution along the year','FontSize',14)

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Scott MacKenzie 2021-6-2

It might help if you post the code that created the figure. Your code crashes with the following error:

Unrecognized function or variable 'Jan'.

Error in test3 (line 7)

irradiation_alongyear=[Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec];

Tony Castillo 2021-6-3

I apologize for not sharing more data, I guess that it but be doable with the part of the code that I shared.

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Answer 1

Joseph Cheng 2021-6-2

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链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/846285-how-to-add-a-label-to-a-contourf-plot-next-to-colourbar#answer_715475

编辑：Joseph Cheng 2021-6-2

在 MATLAB Online 中打开

you can set a ylabel by passing the colorbar handles into ylabel

[X,Y] = meshgrid(1:12,1:24);

Z = sin(X) + cos(Y);

figure(1),contourf(Z)

lastname = {'jan','feb','mar','apr','may','jun','jul','aug','sep','oct','nov','dec'};

ylabel('hours of the day')

xticks([1:12]);xlim([1 12]);

xticklabels(lastname)

hbar = colorbar;

ylabel(hbar,'Varname');

here essentially i generated a dummy set of data to contourf() then force the x limits to 1 to 12 for the month then set hbar as the colorbar handles such that ylabel() knows what to label

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Joseph Cheng 2021-6-2

actually figured out why it was set to only half the months or so. as you set the ticklabels because of say the scaling for display changes the ticks it'll take the first X. so to remedy this i edited my initial response to also force the number of ticks to be 12 such that matlab doesn't auto populate what they should be

Tony Castillo 2021-6-3