Changes between Version 11 and Version 12 of Dev/GribFormat


Ignore:
Timestamp:
May 13, 2016, 4:53:09 PM (9 years ago)
Author:
Dimitar Misev
Comment:

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  • Dev/GribFormat

    v11 v12  
    33
    44Decoding GRIB files in rasdaman can be enabled by specifying `--with-grib` when configuring rasdaman. In this case the [https://software.ecmwf.int/wiki/display/GRIB/Home libgrib_api] library must be installed; this library transparently supports both GRIB 1 and 2.
     5
     6== inv_grib (rasql) ==
     7
     8Petascope should send to rasdaman:
     9
     10{{{
     11UPDATE myCoverage AS m SET m[0:720,0:360,0:1, 0:1] ASSIGN VALUES inv_grib($1, "#messages")
     12}}}
     13
     14The format of #messages is as follows:
     15
     16{{{#!javascript
     17{
     18  "messageDomains": [
     19    "[0:0,0:0,0:719,0:360]",
     20    "[0:0,1:1,0:719,0:360]",
     21    "[0:0,2:2,0:719,0:360]",
     22    ..
     23  ]
     24}
     25}}}
     26
     27The messageDomains should be ordered to match the message order in the GRIB file.
     28
     29The X/Y are required to be the last dimensions as this is efficient and simple (no need to reorder stuff further in rasdaman, besides row-major -> column major for each message).
    530
    631== WCSTImport ==
    … …  
    106131]
    107132}}}
    108 
    109 == rasdaman ==
    110 
    111 Petascope should send to rasdaman:
    112 
    113 {{{
    114 UPDATE myCoverage AS m SET m[0:720,0:360,0:1, 0:1] ASSIGN VALUES inv_grib($1, "#messages")
    115 }}}
    116 
    117 #messages should be as follows:
    118 
    119 {{{#!javascript
    120 {
    121   "messageDomains": [
    122     "[0:0,0:0,0:719,0:360]",
    123     "[0:0,1:1,0:719,0:360]",
    124     "[0:0,2:2,0:719,0:360]",
    125     ..
    126   ]
    127 }
    128 }}}
    129 
    130 The messageDomains should be ordered to match the message order in the GRIB file.
    131 
    132 The X/Y are required to be the last dimensions as this is efficient and simple (no need to reorder stuff further in rasdaman, besides row-major -> column major for each message).