[thredds] OpenDAP constraint expression

• To: thredds@xxxxxxxxxxxxxxxx
• Subject: [thredds] OpenDAP constraint expression
• From: "ashwinD12 ." <winash12@xxxxxxxxx>
• Date: Thu, 26 May 2016 18:36:33 +0530

Hello,
           I am not sure whether I will get any help for asking such a
basic question on OpenDAP constraint expression but if this is not the
forum for getting clarifications on OpenDAP constraint expression please
let me know the appropriate forum.


I I have this URL -
http://www.esrl.noaa.gov/psd/thredds/dodsC/Datasets/ncep.reanalysis2/pressure/air.2014.nc.ascii?air[408:603][2][20:34][26:40]
'



This is the output of a program that fetches data from a THREDDS server. I
am wanting to replicate the functionality by coming up with that URL myself.

Can somebody explain to me what the values in parenthesis are ?

This is the input I give

variable='air',level=850,
months.minmax=c(5,5), years.minmax=c(2014,2014),
lat.southnorth=c(5, 40), lon.westeast=c(65, 100),

I am wanting data for month of May 2014, latitude between 5 N and 40 N and
longitude 65 E and 100 E for the pressure level 850 hPa.

How does that input get translated to the above URL ?

Regards,
Ashwin.

• Follow-Ups:
  • Re: [thredds] OpenDAP constraint expression
    • From: James Gallagher