[Opengeoscience-developers] long live CLT!

[Aashish Chaudhary]

Thanks Dave! It looks good to me.

- Aashish



On Wed, Aug 21, 2013 at 5:23 PM, David E DeMarle
<dave.demarle at kitware.com>wrote:

> From:
> { "_id" : ObjectId("52152cd35c01af00ce90dfdf"), "name" : "clt",
> "variables" : [         {       "units" : "%",    "dim" : [ ],    "range" :
> [     0,      100 ],  "name" : "clt",         "tags" : [ ] } ], "timeInfo"
> : { "numSteps" : 120, "dateRange" : [        [       1979.0849315068492,
>   1.0333333333333334,     1 ],      [       1988.8657534246574,
> 10.533333333333333,     16 ] ], "nativeRange" : [ 0, 119 ], "nativeDelta" :
> 1, "rawTimes" : [     0,      1,      2,      3,      4,      5,      6,
>    7,      8,      9,        10,     11,     12,     13,     14,     15,
>   16,     17,     18,     19,     20,     21,     22,       23,     24,
> 25,     26,     27,     28,     29,     30,     31,     32,     33,     34,
>     35,       36,     37,     38,     39,     40,     41,     42,     43,
>   44,     45,     46,     47,     48,       49,     50,     51,     52,
> 53,     54,     55,     56,     57,     58,     59,     60,     61,
> 62,     63,     64,     65,     66,     67,     68,     69,     70,     71,
>     72,     73,     74,       75,     76,     77,     78,     79,     80,
>   81,     82,     83,     84,     85,     86,     87,       88,     89,
> 90,     91,     92,     93,     94,     95,     96,     97,     98,     99,
>     100,      101,    102,    103,    104,    105,    106,    107,    108,
>    109,    110,    111,    112,    113,      114,    115,    116,    117,
>  118,    119 ], "stdDelta" : 30, "units" : "months since 1979-1-1 0",
> "nativeUnits" : "months", "stdTimeRange" : [ 722366, 725936 ] }, "basename"
> : "clt.nc", "spatialInfo" : [ -180, 175, -90, 90, 0, 0 ] }
>
> The interesting stuff is:
>  "timeInfo" : {
>     "rawTimes" : [ ...], # once GUI doesn't use this we can remove from
> db, we just have to make sure VTK gets a time from within this native
> system. We can convert in vtk_reader from rest if necessary.
>
>    "units" : "months since 1979-1-1 0", #keep around to rebuild converters
> from
>
>    "numSteps" : 120,
>
>    "nativeUnits" : "months", # in case we need to work in native system
> for better precision
>    "nativeDelta" : 1,
>    "nativeRange" : [ 0, 119 ],
>
>     #stdUnits defined to be days
>     "stdDelta" : 30,  # for usual case when we work in standardize system
> (days since 0-0-0)
>     "stdTimeRange" : [ 722366, 725936 ]
>
>     #human readable Y-M-D when we put cdtime or udunits in, these will be
> prettier
>     "dateRange" : [ [ 1979.0849315068492, 1.0333333333333334, 1 ],
>                           [ 1988.8657534246574, 10.533333333333333, 16 ] ],
>
>   }
>
> It is valid for most of the above to not exist when we import a non-time
> varying data set. It is also valid to have a single timestep, in which case
> numSteps=1 and *Delta == 0.
>
> Not going to put something like cdtime in just yet. When we do we'll have
> more time meta data (which calendar etc) and may end up switching what unit
> and basis "std" means. This though should be enough for rough comparisons
> of most data sets at hand now.
>
> David E DeMarle
> Kitware, Inc.
> R&D Engineer
> 21 Corporate Drive
> Clifton Park, NY 12065-8662
> Phone: 518-881-4909
>
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>
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>
>


-- 
| Aashish Chaudhary
| R&D Engineer
| Kitware Inc.
| www.kitware.com
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