Dear IDV users, Our meteorologists make intensive use of IDV. NCEP GFS data is most, served by a thredds data server via OpenDAP. When selecting large data fields (e.g. for vertical soundings), it is desirable to only select a sub-region of data to speed up loading times. However, the screen where the data region is selected does not allow the region to cross the 0-meridian. This is problematic when forecasting for north west Europe. To reproduce: - select data source (NCEP global grib file) - select variable (2 m temperature) - select time steps in "Times" tab - select spatial region in "Region" tab The map shown in this region is (correctly) running from 0 to 360, representing the grib file configuration. I cannot drag the region past the 0 meridian. Is there a way to work around this, other than re-writing the complete set of grib files to encompass -180:180? We know how to do this technically, but it's rather inpractical to re-grid gigabytes of data every 6 hours just to deal with the 0 meridian ... It would be great if IDV would allow drawing the region across the 0 meridian, effectively selecting a region from e.g. 340E:360E and from 0:20E, combining them into one. Any other workarounds are also much appreciated! Kind regards, Hein Zelle -- Dr. Hein Zelle Advisor Meteorology & Oceanography Tel: +31 (0)527-242299 Fax: +31 (0)527-242016 E-mail: hein.zelle@xxxxxxxxxxxxx Website: www.bmtargoss.com BMT ARGOSS b.v. Voorsterweg 28, 8316 PT Marknesse, the Netherlands Postal address: P.O. Box 61, 8325 ZH Vollenhove, the Netherlands Registered in The Netherlands, Registered no. 39060160. Unless otherwise agreed by BMT ARGOSS in writing, all work, services, goods or products supplied by BMT ARGOSS shall be subject to and governed by BMT ARGOSS' own terms and conditions which are available for inspection from BMT ARGOSS on request. ----Confidentiality Notice & Disclaimer---- The contents of this e-mail and any attachments are intended for the use of the mail addressee(s) shown. If you are not that person, you are not allowed to read it, to take any action based upon it or to copy it, forward, distribute or disclose the contents of it and you should please delete it from your system. BMT ARGOSS does not accept liability for any errors or omissions in the context of this e-mail or its attachments which arise as a result of internet transmission, nor accept liability for statements which are those of the author and clearly not made on behalf of BMT ARGOSS.