how to display colorbar levels from '-10^6' to '10^6' ?

labels=arrayfun(@(c1_Positive)['10^',int2str(c1_Positive)],c1_Positive,'uniformoutput',false);

set(ax1,'TickLabels',labels);

labels2=arrayfun(@(c1_Negative)['-10^',int2str(c1_Negative)],c1_Negative,'uniformoutput',false);

set(ax1,'TickLabels',labels2);

[Adam]

What are you trying to achieve and in which version of Matlab?

caxis( [-10^6 10^6] )

will set the colourbar range to that. I don't know what you are trying to do in your code though since you are assigning labels to an axes, and then overwriting them with another set.

In recent versions of Matlab a colourbar is an object rather than an axes explicitly.

[SHANMUKHA REDDY AMARAVADI]

I have a contour of count data having minimum number being -10^5 and maximum number being in 10^5. I want my colorbar to show these '10^' levels (which makes it easy to identify the number of counts) both positive and negative. I am using matlab 2016b

Answer 1

[Adam]

c = colorbar;

labels=arrayfun(@(c)['10^',int2str(c)],-6:6,'uniformoutput',false);
set( c, 'TickLabels', labels, 'TickLabelInterpreter', 'none' );

works, but the result is ugly and far less readable than the default way of presenting the information.