# Re: [ferret_users] calculating Temporal RMSE

```Hi, I guess I have confused you!

let's try this, you said you have data for 1997, 12 months for 1997,
i.e, the time axis shows you 12 points ( l 1:12)

for MAM

yes? let p = (obsrved-model)
yes? let q = p^2
yes? let r = q[l=3:5@sum] !for MAM
yes? let s = r/3
yes? let m = s^0.5
yes? plot m

For OND

yes? let p = (obsrved-model)
yes? let q = p^2
yes? let r = q[l=10:12@sum] !for OND
yes? let s = r/3
yes? let m = s^0.5
yes? plot m

On 10/5/16, afwande juliet <afwandej965@xxxxxxxxx> wrote:
> Thanks will try only that my data is for only 2 seasons MAM and OND 1997, I
> don't know whether it will accept now that you are talking about
> climatology
>
> On Oct 5, 2016 7:54 AM, "Arijeet Dutta" <arijeet.uoh@xxxxxxxxx> wrote:
>
>> Hi,
>> you can list the output
>> e.g.
>> yes?list/file = name.dat m ! 'm' is the desired rmse following last mail
>>
>> Check
>> http://ferret.pmel.noaa.gov/Ferret/documentation/users-
>> guide/commands-reference/LIST
>>
>> Reg
>> Arijeet
>>
>> On 10/5/16, afwande juliet <afwandej965@xxxxxxxxx> wrote:
>> > Thanks But my aim is to get the values in kind of table or something
>> >
>> > On Oct 5, 2016 7:00 AM, "Arijeet Dutta" <arijeet.uoh@xxxxxxxxx> wrote:
>> >
>> >> !say you want it for JJAS and you have the climatology
>> >> yes? let p = (obsrved-model)
>> >> yes? let q = p^2
>> >> yes? let r = q[l=6:9@sum] !for JJAS
>> >> yes? let s = r/4
>> >> yes? let m = s^0.5
>> >> yes? plot m
>> >>
>> >> Regards
>> >> Arijeet
>> >>
>> >> On 10/4/16, afwande juliet <afwandej965@xxxxxxxxx> wrote:
>> >> > Dear All
>> >> > I want to calculate temporal root mean square error between the
>> >> > Observed
>> >> > and Model output for different seasons. I have tried to search here
>> but
>> >> > I
>> >> > dont get clear way to do. Kindly if someone has an idea how to .
>> >> >
>> >> > http://ferret.pmel.noaa.gov/static/Ferret_search/ferret_
>> >> mail_archives.html
>> >> >
>> >>
>> >
>>
>
```