Re: [ferret_users] How to define a variable holding directory path?

["C. Shaji" <cshaji@xxxxxxxxxxxxxxxxxxxxx>]

Hello Ansley,
Thank you for the suggestions. It now works fine for me.

C. Shaji.

On Tue, October 20, 2009 5:29 am, Ansley Manke said:
> Hi -
> When you use the symbol to point to the entire path including the file
> name, it needs to have the quote marks. So when the script adds the file
> name, then the incoming path symbol needs to not have quotes around it.
> Also Ferret parses the / as a syntax element, I think this is what makes
> this a bit tricky.
>
> Define the path symbol without quotation marks, and without the last
> slash:
>
>     define symbol dirname = /home/myhome/var/data/month
>
> Then pass it into the script, maybe also with other arguments such as a
> month number
>
>     define symbol nmoth = `m`
>     if `m lt 10` then define symbol nmonth = 0`m`
>     go use_data ($dirname)  ($nmonth)
>
> inside the script give the path, then the last slash, and then append
> the filename which might contain other symbols.
>
>        use "($1)/sst_($2).nc"
>
> This would open up the file /home/myhome/var/data/month/sst_01.nc .  All
> of this works with remote dataset URL's too,
>
>     define symbol pathname =
>     http://ferret.pmel.noaa.gov/thredds/dodsC/data/PMEL
>
>
> To make the script more readable, it's a nice idea to define a
> meaningful symbol inside the script rather than just referring to ($1)
> and ($2).  The Documentation on Writing Go Tools discusses this further.
>
>
>
> C. Shaji wrote:
>> Hello All,
>> I would like to define a variable holding a directory path and then use
>> it
>> as an argument in calling program and pass it to the main programto use
>> it
>> there. Can somebody suggest me the correct format to do this?
>>
>> For eg. in the calling program
>> define symbol dirname = "?DATA/...../month"
>>
>> Thanks in advance,
>> C. Shaji
>>
>>
>>
>>
>