MATLAB: Plotting monthly precipitation and time

plottime

Hello There, Essentially I'm trying to plot x (time) and y (precipitation). x = [7/15/05 8/9/05 9/15/05 10/16/05 11/17/05 12/28/05 3/8/06 4/12/06 5/13/06 6/17/06 7/16/06 8/9/06 9/10/06 10/9/06 11/4/06 11/29/06 1/2/07];
y = [2.9 0.51 21.49 25.76 13.16 8.46 11.1 3.38 4.85 14.20 3.05 1.45 19.290 0.20 1.17 0.00 7.67];
The code i'm using is: figure(1) plot(x,y);grid;datetick('x','mm/dd/yyyy')
However my x axis is not plotting on the correct scale (attached figure). I seem to be missing a step. Any suggestions would be helpful! Cheers,

Best Answer

In R2014b or later, use datetimes, not datenums:
>> x = {'7/15/05' '8/9/05' '9/15/05' '10/16/05' '11/17/05' '12/28/05' '3/8/06' '4/12/06' '5/13/06' '6/17/06' '7/16/06' '8/9/06' '9/10/06' '10/9/06' '11/4/06' '11/29/06' '1/2/07'}
x =
  1×17 cell array
  Columns 1 through 9
    '7/15/05'    '8/9/05'    '9/15/05'    '10/16/05'    '11/17/05'    '12/28/05'    '3/8/06'    '4/12/06'    '5/13/06'
  Columns 10 through 17
    '6/17/06'    '7/16/06'    '8/9/06'    '9/10/06'    '10/9/06'    '11/4/06'    '11/29/06'    '1/2/07'
>> t = datetime(x,'InputFormat','MM/dd/yy')
t = 
  1×17 datetime array
Columns 1 through 9
   15-Jul-2005   09-Aug-2005   15-Sep-2005   16-Oct-2005   17-Nov-2005   28-Dec-2005   08-Mar-2006   12-Apr-2006   13-May-2006
Columns 10 through 17
   17-Jun-2006   16-Jul-2006   09-Aug-2006   10-Sep-2006   09-Oct-2006   04-Nov-2006   29-Nov-2006   02-Jan-2007
>> y = [2.9 0.51 21.49 25.76 13.16 8.46 11.1 3.38 4.85 14.20 3.05 1.45 19.290 0.20 1.17 0.00 7.67];
>> plot(t,y)
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