Re: time series plotting

Hi James,

Another possibility is to remove the missing values from your array:

   ii = ind(.not.ismissing(X))
   X2 = X(ii) ; Assumes "ii" has some index values in it.
   stamp2 = stamp(ii)

Then plot X2 vs stamp2.

--Mary

On Wed, 10 Jan 2007, Verica Savic-Jovcic wrote:

> Hi James,
>
> Why don't you just plot in Markers mode instead of Line mode?
>
> Verica
>
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> http://www.atmos.ucla.edu/~verica/
>
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> "The art of being wise is the art of knowing what to overlook."
> William James
>
>
> On Jan 10, 2007, at 4:59 PM, James McPhee wrote:
>
>> Hi All,
>> I'm trying to plot a time series with data gaps. This is I have something
>> like
>>
>> X!0="time"
>> X&time=stamp
>> stamp_at_units="seconds since 1-1-1970 00:00:0.0"
>>
>> Most of the data is taken every 30 min, but some times are not available.
>> The unavailable times do not correspond to _FillValue values; instead, the
>> time corrdinate just doesn't include those time stamps. Therefore, if I use
>> gsn_csm_xy to plot the data, a straight line joins the last point before a
>> gap and the first point after the gap. I'd like the plot to actually show
>> the gap, for which I imagine I would have to somehow *insert* the missing
>> time stamps and corresponding _FillValue values into the time series. Is
>> there an efficient way to do this in NCL without going through a loop? can
>> I avoid inserting the missing time stamps at all and still have the desired
>> effect on the plot?
>>
>> Thanks much!
>>
>> James
>>
>> James McPhee
>> Profesor Asistente, Departamento de Ingenieria Civil
>> Facultad de Ciencias Fisicas y Matematicas, Universidad de Chile
>> Av. Blanco Encalada 2002 piso 3
>> Santiago, Chile
>> tel: +56-2-9784400
>> jmcphee_at_ing.uchile.cl
>> http://www.cec.uchile.cl/~jmcphee
>>
>>
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Received on Thu Jan 11 2007 - 09:13:56 MST