change ticklabels using m_map

Hi!

I have problems to change ticklabels using m_map.

My labels for longitude and latitude are overlapping, so I tried to set specific labels for the longitude. The longitude range for my map is -180 to 180.

I have used the following command.

m_grid('xaxis','middle','xtick',5,'xticklabel',{'120W','60W','0','60E','120E'},'ytick',5);

The result with this command is always, that I got longitude labels from -180 to 180. I tried many other things which are recommended just for Matlab, but it is still not working.

Does someone know how to change the labels using m_map?

Answer 1

[Fernand ASSENE]

Hi Lena Frey. I got the same issue as you, and i found that "help m_grid" shows wrong way to use "xtick" option, It's very annoying. Or it works depending on MATLAB version you use, i don't know.

help proposes to use "xtick" option as :

 'xtick',[ num | [value1,value2, ...]  % num = number of ticks

Above a wright way to use this option that i found :

 'xtick',([value1 value2, ...])

This is an example

m_grid('linewi',2,'linest','none','tickdir','out',...
     % set "xtick"/"ytick" values as you want, but must ranging from min to max of each coordinate
       'xtick',([-40 -30 -20 -10 0 10]),...  % longitude   
       'xticklabel',{'40°W','30°W','20°W','10°W','0','10°E'}); % name longitude ticks as you want
       'ytick',([-6 -4 -2 0 2 4 6])); % latitude        
       'xticklabel',{'6°S','4°S','2°S','0','2°N','4°N','6°N'}); % name latitude ticks as you want

I hope it will be useful for someone.