Re: Leap years and time tick marks

hi Victor,
 Since you are setting ttmMajorStride, time_axis_labels() has to tick every
365 or 366 days in your data (I'm assuming you'r using daily data set).
Now, if your data starts on 1-jan-1979, and then it reaches a leap year,
it'll get a 365th day on 31st December of that year (1980 in your case).
Since the format specified is "%y", it'll tick-mark only last two digits of
that year (80) and you'll get to see 80 twice. You can check this out by
setting ttmFormat to a long one (e.g., %y%c%d). Your best solution will be
to use ttmValues instead of ttmMajorStride:

resTick@ttmValues=(/(/1979,01,01,00,00,00/) \
                                     , (/1980,01,01,00,00,00/) \
                                     , (/1981,01,01,00,00,00/) \
                                   ... ...
                                    , (/1995,01,01,00,00,00/) \
                                      /)

This way you can explicitly specify where to tick mark the time axis.

Hope this helps,

--
*Arindam Chakraborty*
Centre for Atmospheric and Oceanic Sciences
Indian Institute of Science
Bangalore - 560 012, INDIA.
http://caos.iisc.ernet.in/ <http://caos.iisc.ernet.in/faculty/arch>
On Mon, Jul 23, 2012 at 9:25 PM, Victor Torres <vtpuente@gmail.com> wrote:
> Hi there,
>    I am plotting a time series of kelvin wave variance built from NOAA OLR
> data at a certain point in lat and lon, however, as this dataset contains
> information for leap years, when I plot the x-axis (this is, the time
> axis), this is out of phase (it can be seen in the attached figure with
> 365) and the values for years are repeated.
>
> To plot the time axis I am using this code:
>
> ;*****************************************************
> ; Set special resources for the time axis
> ;*****************************************************
>   resTick                = True
>   resTick@ttmFormat      = "%y"
>   resTick@ttmAxis        = "XB"
>   resTick@ttmMajorStride = 365
>   resTick@ttmMinorStride = 30
>
> If I use the value of 366 instead, I have the second plot (366, -now the
> years are not repeated but again everything is out of phase)
> Do you know any other way to plot a "nice" and correct time axis whenever
> we consider leap years?
>
> Thank you very much.
> Regards
>
> Victor Torres
>
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Received on Mon Jul 23 22:33:01 2012