Re: [EXTERNAL] [ferret_users] minimum range for @DIN ?

[Xiaoyu Bai <xbai1@xxxxxxxx>]

I usually use at least two grids. My understanding is that @DDN needs to apply a weight, most of the time is the cosine effect. If there is only one grid, pyferret will possibly only consider the one grid's value only.  

Stay healthy,

Xiaoyu

On Thu, Jul 15, 2021 at 10:02 PM Ryo Furue <furue@xxxxxxxxxx> wrote:

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Dear Ferreters,

Does @DIN have a minimum range?  It seems that it stops shrinking when the integration range shrinks below the gridsize.

For a test, I define a variable which is always one and print the values of the integration over y=0:ylim, where ylim = 0, 0.5, 1, 1.5, . . . .

set data coads_climatology  ! grid spacing is 2°
let _ones_ = 1 + 0*y[gy=SST]

repeat/range=0:8/name=yy (let val = ones[y=0:`yy/2`@DIN]; say `val`)

I find that the value of the integral is constant when ylim <= dely and then it starts to linearly grow after that.

Perhaps this isn't intended?

Best regards,

Ryo

--

Xiaoyu