How to plot 2 x-axis with pcolor and colormap

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Shan Chu 2016-6-15

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https://ww2.mathworks.cn/matlabcentral/answers/290152-how-to-plot-2-x-axis-with-pcolor-and-colormap

评论： Chad Greene 2016-6-16

Dear all, I have troubles with plotting 2 x-axis with colormap. It seems like the first axis size will change with the function colormap. Also, the value of the colormap isn't right

X = rand(100,100);
x = linspace(1,100,100);
x2 = linspace(0.1,60,100);
y = linspace(100,200,100);
figure
ax1 = axes();
pcolor(ax1, x,y,X);
shading flat
h = colorbar;    
ax2 = axes( 'Position', get(ax1, 'Position'), 'XAxisLocation', 'top', 'Xlim', [x2(1), x2(end)], 'YLim', get(ax1, 'YLim'), 'YTickLabel', []);
uistack(ax2, 'bottom')
shading flat
h = colorbar
ylabel(h, '| \kappa |')
colormap jet

Could you please help? Thanks

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Chad Greene 2016-6-16

The second set of axes has no data associated with it, so the caxis values won't be right. What exactly are you trying to plot on the second set of axes?

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