how to get a color bar like shown in figure??

i need a log colorbar as in figure attached. how to get that

Answer 1

[KSSV]

cb = colorbar();
cb.Ruler.Scale = 'log';
cb.Ruler.MinorTick = 'on';

[SHANMUKHA REDDY AMARAVADI]

I forgot to mention that my data also has negative values. cb.Ruler.Scale='log'; is showing an error. I am using Matlab 2016b. my data is of large range from negative to positive. axis.Ticks range is -150000 to 100000, so when I use logspace it is only giving '0' and 'inf'.

[SHANMUKHA REDDY AMARAVADI]

I don't know why, but your solution didn't work for me, may be my question should be a bit more informative. I have the solution now. thank you very much for the response.

Answer 2

[SHANMUKHA REDDY AMARAVADI]

c=logspace(min(ax1.Ticks), max(ax1.Ticks), ceil(max(ax1.Ticks)));

c1= linspace((-1)*floor(log10(abs(min(ax1.Ticks)))), ceil(log10(max(ax1.Ticks))), 6);

j=1;

for i=1:length(c1)

    if c1(i) > 0

        c1_Positive(j,1)=c1(i);

        j=j+1;

    else

        c1_Negative(i,1)=abs(c1(i));

    end

end

labels1=arrayfun(@(c1_Negative) ['-10^',int2str(c1_Negative)],c1_Negative,'uniformoutput',false);

set(ax1,'TickLabels',labels1);

hold on;

labels2=arrayfun(@(c1_Positive) ['10^',int2str(c1_Positive)],c1_Positive,'uniformoutput',false);

set(ax1,'TickLabels',labels2);

I am trying to display the values as 10^ for some of them and -10^ for remaining. but I am unable to do that at a time. can anyone help me?? thanks in advance.