[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
20010406: time issues in meteosat imagery
- Subject: 20010406: time issues in meteosat imagery
- Date: Fri, 06 Apr 2001 16:44:41 -0600
>From: address@hidden (Chris Hennon)
>Organization: Ohio State University
>Keywords: 200104061848.f36ImGL26255 McIDAS METEOSAT time
Chris,
>For some reason, many of the meteosat-7 images I've been collecting have a
>time value of 24:00:00 instead of 00:00:00:
This is bad since 24:00:00 is not recognized as a valid time in McIDAS.
>IMGLIST METSAT-7.230 242
>
>Image file directory listing for:METSAT-7
>
> Pos Satellite/ Date Time Center Band(s)
> sensor Lat Lon
> --- ------------- ------------ -------- ---- ---- ------------
> 230 METEOSAT7 27 NOV 98331 24:00:00 0 0 8
> 231 METEOSAT7 28 NOV 98332 06:00:00 0 0 8
> 232 METEOSAT7 28 NOV 98332 12:00:00 0 0 8
> 233 METEOSAT7 28 NOV 98332 18:00:00 0 0 8
> 234 METEOSAT7 28 NOV 98332 24:00:00 0 0 8
> 235 METEOSAT7 29 NOV 98333 06:00:00 0 0 8
> 236 METEOSAT7 29 NOV 98333 12:00:00 0 0 8
> 237 METEOSAT7 29 NOV 98333 18:00:00 0 0 8
> 238 METEOSAT7 29 NOV 98333 24:00:00 0 0 8
> 239 METEOSAT7 30 NOV 98334 06:00:00 0 0 8
> 240 METEOSAT7 30 NOV 98334 12:00:00 0 0 8
> 241 METEOSAT7 30 NOV 98334 18:00:00 0 0 8
> 242 METEOSAT7 30 NOV 98334 24:00:00 0 0 8
>IMGLIST: done
>
>This presents a problem because when I try to list them, I am not allowed:
>
>IMGLIST METSAT-7.ALL TIME=24
>Image file directory listing for:METSAT-7
>IMGLIST: CXADIR CALLED WITH BAD TIME 24
>IMGLIST: done
Right. The interface is enforcing the concept that times can range from
00:00:00 to 23:59:59.
>Hence I can't process the images in my script that you've shown
>me how to use (GEWCOMP2), since it can't process the number '24'. Is
>there a workaround (without manually changing all of the times to '00')?
I believe that you will need to change those times from 24:00:00 to 00:00:00.
This is not hard. You will need to use the IMGCHA command to do it:
IMGCHA METSAT-7.230 TIME=00:00:00
>Thanks.
You can roll IMGCHA into a little McBASI script that does a complete list
and then reads back in the images that have 24:00:00 as their time and
then change them in one go.
Tom