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calc_w._of_e._probability_map [2011/07/26 20:13] hermann created |
calc_w._of_e._probability_map [2015/10/13 17:27] (current) admin |
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===== Inputs ===== | ===== Inputs ===== | ||
- | ^ Name ^ Type ^ Description ^ | + | ^ Name ^ Type ^ Description ^ |
- | | Landscape | [[Categorical Map Type|Categorical Map ]] | Map of land use and cover classes | | + | | Landscape | [[Categorical Map Type]] | Map of land use and cover classes. | |
- | | Weights | [[Categorical Map Type|Categorical Map ]] | Weights of Evidence coefficients | | + | | Weights | [[Categorical Map Type]] | Weights of Evidence coefficients. | |
- | | Transitions | [[Transition Set Type |Transition Set ]] | List of transitions for which spatial probability maps will be calculated. | | + | | Transitions | [[Transition Set Type]] | List of transitions for which spatial probability maps will be calculated. | |
- | | Transitions | [[Transition Set Type |Transition Set ]] | List of transitions for which spatial probability maps will be calculated. | | + | |
===== Optional Inputs ===== | ===== Optional Inputs ===== | ||
- | ^ Name ^ Type ^ Description ^ Default Value ^ | + | ^ Name ^ Type ^ Description ^ Default Value ^ |
- | | Cell Type | [[Cell Type Type|Cell Type ]] | Data cell type. | Unsigned 8 Bit Integer | | + | | Cell Type | [[Cell Type Type]] | Data cell type. | Unsigned 8 Bit Integer | |
- | | Null Value | [[Int Type|Int ]] | Null value | 0 | | + | | Null Value | [[Null Value Type]] | Null value. | Default | |
===== Output ===== | ===== Output ===== | ||
- | ^ Name ^ Type ^ Description ^ | + | ^ Name ^ Type ^ Description ^ |
- | | Probabilities | [[Map Type|Map ]] | Map of probabilities. | | + | | Probabilities | [[Map Type]] | Map of probabilities. | |
===== Group ===== | ===== Group ===== | ||
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===== Notes ===== | ===== Notes ===== | ||
- | The spatial transition probability maps depict the probability of a cell at position //(x,y)// to change from state <i>i</i> to state //j//. The spatial transition probabilities are calculated for each cell on the landscape raster map and for each specified transition. Dinamica employs the Weights of Evidence method, which uses a general polytomous logistic equation (see equation) to select the most favorable areas for each type of transition. The calculations are made using spatial variables stored in the GIS. | + | The spatial transition probability maps depict the probability of a cell at position //(x,y)// to change from state //i// to state //j//. The spatial transition probabilities are calculated for each cell on the landscape raster map and for each specified transition. Dinamica employs the Weights of Evidence method, which uses a general polytomous logistic equation (see equation) to select the most favorable areas for each type of transition. The calculations are made using spatial variables stored in the GIS. |
<m>P delim{lbrace}{i doubleright j delim{|}{A inter B inter C inter D cdots inter N}{|}}{rbrace}={e^sum{}{}{W^+}}/{1+e^sum{}{}{W^+}}</m> | <m>P delim{lbrace}{i doubleright j delim{|}{A inter B inter C inter D cdots inter N}{|}}{rbrace}={e^sum{}{}{W^+}}/{1+e^sum{}{}{W^+}}</m> |