plotting dates on x axis with labels auto generated for 1st Jan each year?

Hi, I'm plotting monthly data (generally the 16th of the month) over 20 or more years with the dates held as datenum's.

I'm generating my plots in code.

Does anyone know if there's a way to force/tell matlab to just have yearly points on the x axis, ie datetick('x',24,'keepticks'))

BUT have these autogenerated to the beginning of each year? So while the label will read say "2007", that point will be "01/01/2007".

Thanks for any help,

Tom.

Answer 1

[Andrei Bobrov]

EDIT (0:20 MDT 09.12.2011)

input data (e.g.):

n = 22*12-7;
datedata = datenum(bsxfun(@plus,[1990 12 16],[zeros(n,1) (0:n-1)' zeros(n,1)]));

solution:

n2 = diff(year(dte([1,end])));
x = datenum(bsxfun(@plus,[1991 1 1],[(0:n2-1)' zeros(n2,2)])); 
plot(datedata,rand(numel(datedata),1));grid on
set(gca,'XTick',x);
datetick('x','yyyy','keepticks')

Answer 2

[tombola]

Hi, thanks. My dates will generally be the datenum equivalent of 16/12/1990 16/01/1991 16/02/1991 16/03/1991 16/04/1991 16/05/1991 16/06/1991 up to, say, 16/04/2012 (they may not all be the 16th, there could be others)

Is there any way to plot this data with labels 1990 1991 ... 2012 where each label is the 1st of Jan that year, ie, 01/01/1990 01/01/1991 ... 01/01/2012

Thanks a lot,

Tom