McIDAS User's Guide
Version 2010.1
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Manages and lists dataset names on the local server.
DSSERVE
ADD dataset format bfile efile [keywords] "comment
DSSERVE DEL dataset
DSSERVE LIST group format
The dataset parameter must be specified in the group/descriptor format. The total length of dataset, including the slash, must be 21 characters or less. The group name is limited to eight characters or less and the descriptor name is limited to 12 characters or less. The group name cannot be entirely numeric. The following characters are not valid in the group or descriptor name: slash ( / ), period ( . ), blank ( ), left bracket ( [ ), right bracket ( ] ).
The ADD option overwrites an existing ADDE dataset name without warning. This means you cannot assign the same ADDE dataset name to more than one dataset, even if the datasets have different file formats.
After adding the dataset name, the ADD option maps the dataset's group name to the local server in the DATALOC table. If the group name is already mapped to a remote server, the DATALOC table entry is not changed.
Use the DIRFILE='mask' keyword to access non-McIDAS format files or McIDAS area, grid or MD files with names other than AREAnnnn, GRIDnnnn and MDXXnnnn (where nnnn is a 4-digit number) and/or files outside the MCPATH and REDIRECT directories. The mask value contains the location and names of the files (i.e., the directory and file masks), and is specified using standard Unix substitution rules and wildcards. The file mask consists of all characters after the last slash; everything before and including the last slash is the directory mask. For example, if you specify DIRFILE='/home/user/goes/images/199?/Conus*', then /home/user/goes/images/199?/ is the directory mask, Conus* is the file mask, and the entry matches all files beginning with "Conus" that reside in any /home/user/goes/images/ subdirectory whose name is four characters long and begins with "199". If you don't specify any slashes in mask, there is no directory mask so the entry is treated as a file mask only and its file(s) must be located in a MCPATH directory.
Absolute position numbers in datasets created using the DIRFILE keyword are determined in the order that the files are found by the server, beginning with position 1. Thus, the absolute position number of a file can change if another file is added to or removed from the dataset. Relative position numbers work as expected, so position 0 is the most recent image, -1 is the next most recent, etc.
You can access Aqua AIRS Level 1b HDF files with the IMG* commands by using DSSERVE to assign a dataset name to the files. When doing so, specify "AIRS" in the format parameter, TYPE=IMAGE, and the directory and file masks in the DIRFILE keyword. The file names must match the standard naming convention that includes the 5-minute granule number (JPL format).
GeoTIFF images are similar to TIFF images, but include calibration and navigation information. They are used by the GIS community and can be viewed with ARCVIEW or other GIS software packages.
You can create GeoTIFF image files from other TYPE=IMAGE datasets. To do so, make a GeoTIFF image dataset with a DSSERVE command similar to: DSSERVE ADD GEOTIFF/GOES GEOT 1 9999 TYPE=IMAGE "GeoTIFF GOES image files. Then specify GEOTIFF/GOES as the destination dataset with a positive position number in an IMGCOPY, IMGFILT, IMGOPER or IMGREMAP command. If you use IMGCOPY, IMGFILT or IMGOPER, the source image must be in a rectilinear projection. If you use IMGREMAP, the source image can be in any projection, but you must specify PRO=RECT to make the destination GeoTIFF image a rectilinear projection. IMGFILT, IMGOPER, and IMGREMAP save the image with BRIT calibration. IMGCOPY can save it with other calibrations by using the UNIT keyword.
The output file name consists of the descriptor name and position number followed by .tif. For example, the command IMGCOPY GOESEAST/VIS GEOTIFF/GOES.300 SIZE=ALL creates an output file named GOES0300.tif.
You can access GRIB files in GRIB1 or GRIB2 format with the GRD* commands by using DSSERVE to assign a dataset name to the files. When doing so, specify "GRIB" in the format parameter, TYPE=GRID, and the directory and file masks in the DIRFILE keyword. Only GRIB1 and GRIB2 files from the NOAAPORT data stream have been tested and are fully supported.
You can access MODIS Level 1b HDF files with the IMG* commands by using DSSERVE to assign a dataset name to the files. When doing so, specify "MODS" in the format parameter, TYPE=IMAGE, and the directory and file masks in the DIRFILE keyword.
You can access MODIS Level 2 MOD06 (cloud top properties), MOD07 (atmospheric profile) and MOD35 (cloud mask) products in HDF format with the IMG* commands by using DSSERVE to assign a dataset name to the files. When doing so, specify "MODX" in the format parameter, TYPE=IMAGE, and the directory and file masks in the DIRFILE keyword.
You can access MODIS Level 2 MOD04 (aerosol), MOD28 (sea surface temperature), and MODR (corrected reflectance) products in HDF format with the IMG* commands by using DSSERVE to assign a dataset name to the files. When doing so, specify "MOD4" (for MOD04 aerosol products), "MOD8" (for MOD28 sea surface temperature products), or "MODR" (for MODR corrected reflectance products) in the format parameter, TYPE=IMAGE, and the directory and file masks in the DIRFILE keyword.
You can access MODIS (and potentially other) HDF files as point data in MODS-format datasets created using DSSERVE with the TYPE, DIRFILE and INFO keywords. The TYPE keyword specifies the data type (POINT) of the HDF files in the dataset. The DIRFILE keyword specifies the directory and file masks to locate the HDF files. The INFO keyword specifies the name of the configuration file that maps the HDF file parameter names to McIDAS parameter names. The configuration file must be tailored specifically to the HDF files in the dataset. Two sample configuration files, named MOD06.cfg and MOD07.cfg, are available in the ~mcidas/data directory. Refer to those files when creating configuration files for your HDF point datasets.
When creating MODIS HDF image or point datasets, the file names must match the standard Goddard DAAC (Distributed Active Archive System) or MODIS direct broadcast naming conventions. In the DAAC convention, for example, 1 km Terra MODIS Level 1b HDF image files must follow the format MOD021KM.Ayyyyddd.hhmm.002.yyyyddd.hdf. Aqua files must begin with MYD instead of MOD, and 1/2 km and 1/4 km resolution files are denoted as HKM and QKM instead of 1KM. In the MODIS direct broadcast convention, for example, the same 1 km Terra image files must follow the format t1.yyddd.hhmm.1000m.hdf. Aqua files must begin with a1 instead of t1, and 1/2 km and 1/4 km files are denoted as 500m and 250m instead of 1000m. Similarly, these two naming conventions can be applied to the MODIS Level 2 products in HDF format.
You can access real-time segmented Meteosat Second Generation Level 1.5 files transmitted by EUMETSAT with the IMG* commands by using DSSERVE to assign a dataset name to the files. When doing so, specify "MSGT" in the format parameter, TYPE=IMAGE, and the directory and file masks in the DIRFILE keyword. Also, the dataset descriptor must be "HRV" if the dataset contains high resolution visible channel (band 12) data, and either "FD" or "VISIR" if the dataset contains full disk low resolution visible and infrared channel (bands 1-11) data.
You can access MTSAT HRIT files with the IMG* commands by using DSSERVE to assign a dataset name to the files. When doing so, specify "MTST" in the format parameter, TYPE=IMAGE, and the directory and file masks in the DIRFILE keyword. The file names must match the JMA segmented image file naming convention described at https://www.ssec.wisc.edu/mcidas/doc/sdi_man/current/mtsat_hrit-3.html.
You can access netCDF grid and point files in NCDF-format datasets created using DSSERVE with the TYPE, DIRFILE and INFO keywords. The TYPE keyword specifies the data type (GRID or POINT) of the netCDF files in the dataset. The DIRFILE keyword specifies the directory and file masks to locate the netCDF files. The INFO keyword specifies the name of the configuration file that maps the netCDF file parameter names to McIDAS parameter names. The configuration file must be tailored specifically to the netCDF files in the dataset. Two sample configuration files, named netcdfgrid.cfg and netcdfpoint.cfg, are available in the ~mcidas/data directory. Refer to those files when creating configuration files for your netCDF grid and point datasets.
You can create netCDF image files from other TYPE=IMAGE datasets. To do so, make a netCDF image dataset with a DSSERVE command similar to: DSSERVE ADD NETCDF/GOES NCDF 1 9999 TYPE=IMAGE "netCDF GOES files. Then specify NETCDF/GOES as the destination dataset with a positive position number in an IMGCOPY, IMGFILT, IMGOPER or IMGREMAP command. The output file name consists of the descriptor name and position number followed by .nc. For example, the command IMGCOPY GOESEAST/VIS NETCDF/GOES.300 SIZE=ALL creates an output file named GOES0300.nc that's mapped to position 300 of the dataset NETCDF/GOES.
You can access AVHRR Level 1b files containing MetOp-A FRAC or POES/NOAA KLM and later (NOAA-15, -16, -17 and later) imagery from NOAA CLASS (http://www.class.noaa.gov) with the IMG* commands by using DSSERVE to assign a dataset name to the files. When doing so, specify "LV1B" in the format parameter, TYPE=IMAGE, and the directory and file masks in the DIRFILE keyword. To process the data (during client command data requests) using the file's line-by-line lat/lon navigation (rather than the orbital navigation at the beginning of the file), also include the keyword INFO=LALO. You can compare the two navigation types by using DSSERVE to make two datasets that are identical except that one includes INFO=LALO.
The two types of files that can be used are 10-bit files (which inherently have all channels) and 16-bit files that contain all channels. You can obtain 16-bit files with only one channel from CLASS, but they won't work in McIDAS ADDE servers.
You can copy POES/NOAA KLM and later AVHRR data in McIDAS readable format (McIDAS Area with 192 byte doc section) to the CLASS Level 1b file format with IMGCOPY by using DSSERVE to assign a dataset name to the files. When doing so, specify "LV1B" in the format parameter, TYPE=IMAGE, and the directory and file masks in the DIRFILE keyword. The output file name consists of the descriptor name and position number followed by the extension .l1b. For example, the command IMGCOPY WALLOPS/N17HRPT LV1B/17HRPT.2 SIZE=SAME DOC=YES BAND=ALL creates an output file named 17HRPT0002.l1b in the directory specified in the DIRFILE keyword. The IMGCOPY command must include SIZE=ALL or DOC=YES with BAND=ALL and SIZE=SAME or SIZE= with any value for its lines parameter and either 2048 (for HRPT or LAC data) or 409 (for GAC data) for its ele parameter.
When adding a SYSN-format dataset, the descriptor portion of the dataset name must exactly match a satellite name in the text file ~mcidas/data/CORE.SAT. The server uses this file to map the descriptor to the correct sensor source number and locate the needed information in the dataset's system navigation files. For example, NAV/GOES9, NAV/GOES-9, NAV/G9, NAV/G-9 and NAV/WEST are all valid dataset names because all the descriptors are entries in the CORE.SAT file. You cannot add new satellite names or edit existing names in CORE.SAT; you must use a satellite name that exists in the SSEC-supplied version of the file.
When adding a TEXT-format dataset, you must specify the text file name with the INFO keyword. The file name is case-sensitive. If you do not include the full path name, the file must be located in a MCPATH or REDIRECT directory. For example, you can create a TEXT-format dataset containing a NORAD Two-Line Element (TLE) file, then list and display its data with the NAVCALC and NAVDISP commands. To do so, place the TLE file into a MCPATH or REDIRECT directory, then make the dataset with a command similar to: DSSERVE ADD NAV/MODIS TEXT INFO='TLE.TXT' "TLE file with TERRA and AQUA orbits.
DSSERVE
This entry lists information about all datasets on the local server.
DSSERVE ADD LOCALDATA/AREAS AREA 1 9999 "Areas in my data directory
This entry assigns the dataset name LOCALDATA/AREAS to areas 1 through 9999 on the local server.
DSSERVE ADD NAV/NOAA-14 SYSN 1 6 "NOAA-14 System Navigation
This entry assigns the dataset name NAV/NOAA-14 to system navigation files 1 through 6 on the local server.
DSSERVE ADD HURRICANE/GOES-WV-8KM AREA 6001 6100 "Hurricane Bob images
This entry assigns the dataset name HURRICANE/GOES-WV-8KM to areas 6001 through 6100 on the local server.
DSSERVE ADD ADMIN/SATDATA TEXT INFO='/u/oper/mcidas/info/satdata.txt' "Listing of all available satellite data
This entry assigns the dataset name ADMIN/SATDATA to the text file /u/oper/mcidas/info/satdata.txt. Use the READ command to list the file.
DSSERVE ADD GOES/VIS_4KM HDF TYPE=IMAGE INFO='/users/ingest/hdfdata' "GOES-8 HDF data
This entry assigns the dataset name GOES/VIS_4KM to HDF image data on the local server. The directory specified with the INFO keyword is used by the locally-developed HDF server to locate the data.
DSSERVE LIST HURRICANE
This entry lists information about all datasets in the group HURRICANE on the local server.
DSSERVE DEL HURRICANE/GOES-WV-8K
This entry deletes the dataset name HURRICANE/GOES-WV-8K from the local server, but does not affect the data to which the dataset name was assigned.
DSSERVE ADD GRID/NETCDF NCDF TYPE=GRID INFO='NCDF_ETA.CFG' DIRFILE='/home/user/netcdf/grids/ETA*'
This entry assigns the dataset name GRID/NETCDF to netCDF grid files whose names begin with ETA and are located in the /home/user/netcdf/grids/ directory. The INFO keyword specifies the configuration file (NCDF_ETA.CFG) that maps the netCDF file parameter names to McIDAS parameter names.
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