Re: [ferret_users] calcuting RMSE

To: afwande juliet <afwandej965@xxxxxxxxx>

Subject: Re: [ferret_users] calcuting RMSE

From: Kwesi Quagraine <starskykwesi@xxxxxxxxx>

Date: Mon, 10 Oct 2016 17:18:53 +0200

Cc: ferret_users <ferret_users@xxxxxxxx>

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Hello Juliet, I think you are getting this error because the time axis of the two datasets look different. First of all sharing how you regridded the data might throw more light unto your current situation. From the look of things, one of your dataset has a non-calendar axes.

Kwesi

On Mon, Oct 10, 2016 at 4:35 PM, afwande juliet <afwandej965@xxxxxxxxx> wrote:

Dear ALL, I am trying to calculate RMSE for two datasets over a box for MAM seasons for 1997 only. I have re-gridded the data so that have same grid information. But I get the error below. Could some help me. Also attached are two datasets am using

yes? set region/x=32E:40E/y=8N:18S
yes? let p=pre[d=2]-pr[d=1]
yes? let q = p^2
yes? let r = q[l=1:3@sum]
yes? let s = r/3
yes? let m = s^0.5
yes? list m
           *** NOTE: Ambiguous coordinates on T axis: PRE[D=2]-PR[D=1]
**ERROR: illegal limits: PR is not in the range T=35488:35579
          Axis extremes are T=19970301:19970532
yes? set region/x=32E:40E/y=8N:18S
yes? let p=pre[d=2]-pr[d=1]
yes? let q = p^2
yes? let r = q[l=1:3@sum]
yes? let s = r/3
yes? let m = s^0.5
yes? list m
           *** NOTE: Ambiguous coordinates on T axis: PRE[D=2]-PR[D=1]
**ERROR: illegal limits: PR does not exist at T=19970516
          Axis extremes are T=19970516

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References:

[ferret_users] calcuting RMSE
- From: afwande juliet