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15.0 Creating an ADDE Dataset

In this document we describe how to create an ADDE dataset from a collection of data files.

Table of Contents:

Deciding where to put the dataset files

The workshop machines are setup with a /data/workshop/mcidas directory which is writable by the user mcidas. This will be the directory used to store the data files for our example dataset.

Accumulating the data files to be included in the dataset

For this exercise, we will FTP a set of imagery from the Unidata-Wisconsin archive maintained at the SSEC at the University of Wisconsin-Madison. 

machine: unidata2.ssec.wisc.edu
user: unidata3
pass: unirec7
directory: neartime/<choose a day>

Grab all of the GOES 11 IR files. 

cd /data/workshop/mcidas
ftp unidata2.ssec.wisc.edu
  <user> unidata3
  <pass> unirec7
  cd neartime
  dir
  cd <day chosen>
  binary
  prompt
  mget *.goes11ir
  quit

Configuring McIDAS to be able to access the data files in the dataset

For this, we need to run a McIDAS file REDIRECT command to tell McIDAS where the data files live: 

DMAP *.go*
This listing is most likely empty. 

REDIRECT ADD *.go* "/data/workshop/mcidas
Verify that you can see the images from your McIDAS session: 

DMAP *.go*

Deciding on the group and descriptor name(s) for the ADDE dataset

For lack of anything more creative, let's call our dataset UNIREC/GOES11-IR.

Creating the server mapping table entries that define the dataset

To create the server mapping table entry for the new dataset group/descriptor use the DSSERVE command.

First, review the online help for the DSSERVE command. Then use the DIRFILE= keyword option of DSSERVE to setup your dataset. 

DSSERVE ADD UNIREC/GOES11-IR AREA TYPE=IMAGE DIRFILE=/data/workshop/mcidas/*.goes11ir "GOES-11 10.7 um images from the Unidata-Wisconsin archive
See if you can now list the definition for the dataset: 

DSINFO IMAGE UNIREC
If all has gone correctly to this point, produce a short listing of the images in the UNIREC/GOES11-IR dataset: 

IMGLIST UNIREC/GOES11-IR.ALL
IMGDISP UNIREC/GOES11-IR 1 SF=YES STA=KSLC EU=IMAGE REFRESH='ERASE G 1;MAP H 1 GRA=1;MAP X 5 ST=UT COU=ALL GRA=1'


Table of contents Previous: Applying Lessons Learned Next: IR Channel Differencing

 
 
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