Re: [ferret_users] how to do embedded expression inside an embedded expression with grave accent

[Xiaoyu Bai <xbai1@xxxxxxxx>]

repeat/range=1:7/name=aa (use file_name_`aa`.nc) is a good idea. I have a handicap that I use let files_CNRM=spawn("ls -1 /home/xbai1/Tracmip/family1/*CNRM*.nc") to identify my files before I read them in. Ferret doesn't let me to use syntax `spawn("ls -1 /home/xbai1/Tracmip/family1/*CNRM*.nc")` because grave accent has the highest priority. 😹 

Thanks a lot. 

Xiaoyu

On Wed, Oct 10, 2018 at 11:52 AM Satyesh Ghetiya <satyeshghetiya@xxxxxxxxx> wrote:

Hi,

On Wed, Oct 10, 2018 at 9:05 PM Xiaoyu Bai <xbai1@xxxxxxxx> wrote:

Hi Ghetiya,

Yes, I wan to read all the files in through the repeat loop. When you say nested loop, do you mean let datset=0; repeat/range=1:8 (let datset=`datset+1`; use `files_CNRM[X=datset]`)? It didn't work.

^ Yes, you are correct, I also encountered similar problem, it seems ferret is not taking nested definition of variable.

The error message is like **ERROR: command syntax: DATSET // SET DAT/FORM=CDF `files_CNRM[X=datset]`. I feel datset needs a pair of grave accent to make it as an variable. However, ferret considers the nearest two grave accents as a pair. 

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G Satyesh

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Xiaoyu

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G Satyesh

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Xiaoyu