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Topic: Shifting NaNs to top of matrix
Replies: 6   Last Post: Mar 25, 2013 6:49 AM

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ladidalimey

Posts: 24
Registered: 8/6/10
Re: Shifting NaNs to top of matrix
Posted: Mar 22, 2013 10:14 AM
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Thanks. Unfortunately I need the rest of the data to be in the same order.

L.


"Loren Shure" <Loren.Shure@mathworks.com> wrote in message
news:kihnul$agh$1@newscl01ah.mathworks.com...
>
> "ladidalimey" <ladidalimey@gmail.com> wrote in message
> news:dwE2t.91776$ZZ.35711@fx06.fr7...

>> Hi,
>>
>> I'm trying to do the following:
>>
>> Take this example matrix:
>>
>> test = [nan 1 nan 1
>> 1 1 1 1
>> nan 1 1 nan]
>>
>> I want to shift all the nans to the top of each column so there is only
>> numerical data below, resulting in:
>>
>> [nan 1 nan nan
>> nan 1 1 1
>> 1 1 1 1]
>>
>> Any ideas for a way of doing this without resorting to a loop?
>>
>> Thanks.
>>
>> L.
>>
>>
>>

>
> You can use sort with the 'descend' option if you don't care how the
> non-NaN values are sorted.
>
>
> --
> --Loren
>
> http://blogs.mathworks.com/loren





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