Re: Error

From: Mary Haley <haley_at_nyahnyahspammersnyahnyah>
Date: Wed, 3 Jun 2009 10:09:57 -0600 (MDT)


I still don't have enough information. Subsets of your data has
missing values, so the dim_rmvmean is going to give you missing values
back. This is not an error, but the correct way in which "dim_rmvmean"
behaves. You are basically calculating the average of
an array of all missing values, so there's nothing to do but return
a missing value. These missing values are detected by
the presence of your "_FillValue" attribute, which indicates the
value of your missing value.

You need to be more specific about what you are expecting out of your

It would help if you can send your script, and explain in more detail
why you think there's an error.


On Wed, 3 Jun 2009, Ibraheem Khan wrote:

> Hi Mary,
> I am calculating time averaged precipitation anomaly using "dev_2.ncl". Yes, you are right about "lat x lon x time" array. According to visual inspection, the right most array is over sea surface and has missing values. I used "@_FillValue" attribute but still the same error in the output.
> Please help to rectify this error.
> Thanks
> -Ibraheem
> ----- Original Message -----
> From: "Mary Haley" <>
> To: "Ibraheem Khan" <>
> Cc: "ncl-talk" <>
> Sent: Wednesday, June 3, 2009 9:36:25 AM GMT -06:00 US/Canada Central
> Subject: Re: Error
> Ibraheem,
> You didn't give much information here, but I assume you are talking
> about the "dim_rmvmean" function, and I'm going to asssume you have a
> "lat x lon x time" array that you are passing to dim_rmvmean.
> What it's telling you is that at a particular lat,lon point, all the
> time values for that point are missing. That means "dim_rmvmean" value
> at that point will also be missing.
> The "8829 rightmost sections..." warning is indicating that you have
> 8829 lat,lon points where all the time values are missing.
> If you don't think your data should have this much missing data,
> then you may want to double-check the source of your data and make
> sure it is correct.
> Otherwise, I'm not sure what you're trying to accomplish, so I don't
> know how to help you beyond this point. We need more information
> about what it is you're trying to calculate.
> --Mary
> On Tue, 2 Jun 2009, Ibraheem Khan wrote:
>> Hi,
>> The requirement of "dev_2.ncl" (available on NCL website) is to reorder the data but the right most array is missing data values. No output with following error:
>> :8829 rightmost sections of the input array contained all missing values
>> anyone who can help in this regard to handle missing values.
>> Thanks
>> -Ibraheem
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Received on Wed Jun 03 2009 - 10:09:57 MDT

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