Re: SPI

Setareh,

Jonathan is correct. You are asking some very vague questions. You need to include more details.

The 588 value implies, perhaps, that you have 49 years of data (588/12 = 49) and not 42.

You *must* attempt to look at your code and understand what is happening before you send questions to ncl-talk.

Use "print" and "printVarSummary" to look at your time data and try to figure out why you have more than 42 years of data.
Perhaps the data was not subscripted properly.

--Mary

On Aug 3, 2013, at 8:57 AM, jbuzan wrote:

> You need to be explicit about what you are doing and how you programmed your code. I am sure that the vast majority of people on ncl-talk have no idea what you are actually asking.
>
> -Jonathan
>
>
> On Aug 3, 2013, at 6:26, Setareh Rahimi <setareh.rahimi@gmail.com> wrote:
>
>>
>> Dear all,
>>
>> I have calculated standardizes precipitation index (SPI), I used 42 years, but the values of SPI are 588, not 504. Why does it happen?
>> -
>> S.Rahimi
>>
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Received on Mon Aug 5 08:44:05 2013