Changes between Version 15 and Version 16 of Grass7/TemporalGISAlgebra


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Timestamp:
Jul 5, 2013, 8:53:55 AM (11 years ago)
Author:
huhabla
Comment:

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  • Grass7/TemporalGISAlgebra

    v15 v16  
    198198C = if(equal, Temp > 10.0, Prec / 3600.0 / 24.0 {equal,=/} td(Prec))
    199199}}} 
     200Compute the mean value of all maps from STRDS A that are located during time intervals of STRDS B if more than one map of A is contained in an interval of B, use A otherwise, the resulting time intervals are computed as temporal union and stored in C:
     201{{{
     202C = if(B {contain,#} A > 1, (B {contain, =+} A - B) / (B {contain,#} A), A)
     203}}}
     204Same expression with explicit definition of the temporal topology relation and temporal operators:
     205{{{
     206C = if(equal, B {contain,#} A > 1, (B {contain, =+} A {equal, =-} B) {equal,=/} (B {contain,#} A), A)
     207}}}
    200208
    201209All supported operators and functions are documented below.