>From: Edward Hindman <address@hidden>
>Organization: CCNY
>Keywords: 200203060049.g260nKK25416 McIDAS DSSERVE
Hi Ward,
>My student Kamal Thapa and I are conducting a study using McIDAS. We have
>been able to download historic images from the SSEC and analyze them
>using McIDAS following instructions at
>
>www.sci.ccny.cuny.edu/~hindman/eas308/LECT16.htm
Sounds good so far...
>In fact, you wrote a portion of those instructions last spring earning
>yourself the "E-mail visiting professor" title.
Yes, a title I am proud of :-)
>Just today we found the DSSERVE LIST MYDATA and the DSSERVE ADD
>MYDATA/IMAGES AREA 1 9999 "All images in AREA format commands do not
>work; we cannot append MYDATA to our McIDAS session to analyze the
>downloaded images.
Hmm... This is strange to say the least.
>We are running McIDAS at address@hidden
>As soon as possible, could you run McIDAS on Cirrus and
>see what you learn and advise us how to correct our instructions in Lect16?
Will do.
>Thank you!
No worries.
Here is what I found:
First, the DSSERVE invocation will update a file called RESOLV.SRV, and
this file should be located (created/maintained) in your McIDAS working
directory. In the case of the user you are interested in, this would
be in /home/wxnut/mcidas/data. I took a quick look at this file, and
saw that it was 1 byte in length:
address@hidden data]$ ls -alt RESOLV.SRV
-rw-r--r-- 1 wxnut mcidas 1 Mar 5 15:07 RESOLV.SRV
This is very strange since the entries that get written into RESOLV.SRV
are somewhat long. A quick probe of the file shows that the one character
was bogus. Given this, I deleted the file:
address@hidden data]$ rm RESOLV.SRV
Now, since the object is to setup the MYDATA dataset, and since Unidata
McIDAS is delivered with a McIDAS BATCH file to setup this dataset,
I decided to try and use the BATCH file. What I found was not good:
Program terminated, segmentation violation
This tells me that there is something wrong with the executable for
DSSERVE. In order to find this problem, I will need to rebuild the
executable for DSSERVE, and to do that, I will need the login to
cirrus as the user 'mcidas'. Hold on, I just guessed it.
Since I have to run to a meeting (wild fire mitigation), I manually
created the RESOLV.SRV file in ~wxnut/mcidas/data. I can now look at
the AREA files in that directory:
address@hidden data]$ imglist.k MYDATA/IMAGES.1002
Image file directory listing for:MYDATA/IMAGES
Pos Satellite/ Date Time Center Band(s)
sensor Lat Lon
--- ------------- ------------ -------- ---- ---- ------------
1002 G-10 IMG 10 JAN 02010 02:00:00 24 137 4
imglist.k: done
I will look into the DSSERVE failure more later tonight or tomorrow
morning.
One quick comment:
There are several AREA files with improper names:
AREA611
AREA614
...
AREA923
AREA files must be named AREAnnnn, where nnnn can vary from 0001 to 9999.
nnnn _must_ be a 4 digit number.
Tom
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