Question

I want to plot only data that is greater than or equal to 6 and less than or equal to 12 on the colorbar. I have written the following. But am unable to include other restrictions:

scatter(x(log_gnd>=6), y(log_gnd>=6), 5, log_gnd(log_gnd>=6));

I also want to divide the colorbar into only 4 segments.

Answer 1

Plot data points greater than or equal to 6 and lower than or equal to 12 (and function reference).

indices = log_gnd>=6 & log_gnd<=12;    
scatter(x(indices), y(indices), 5, log_gnd(indices));

Concerning the division of colorbar into 4 segments, following code divides colorbar with labels. If you would like for numbers to be there remove 'YTickLabel', {'First', 'Second', 'Third'} from the code.

colorbar('YTick', [7.5 9 10.5], 'YTickLabel', {'First', 'Second', 'Third'});