Differences
This shows you the differences between two versions of the page.
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calc_areas [2011/04/20 22:36] hermann created |
calc_areas [2013/07/10 17:17] (current) admin [Notes] |
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| ===== Inputs ===== | ===== Inputs ===== | ||
| - | ^ Name ^ Type ^ Description ^ | + | ^ Name ^ Type ^ Description ^ |
| - | | Categorical Map | [[Categorical Map Type|Categorical Map ]] | Map containing classes or categories. | | + | | Categorical Map | [[Categorical Map Type|Categorical Map]] | Map containing classes or categories. | |
| ===== Output ===== | ===== Output ===== | ||
| - | ^ Name ^ Type ^ Description ^ | + | ^ Name ^ Type ^ Description ^ |
| - | | Areas | [[Lookup Table Type|Lookup Table ]] | Table containing the areas for each map category. | | + | | Areas | [[Table Type|Table]] | Area of each map category in cells, hectares and square meters. | |
| ===== Group ===== | ===== Group ===== | ||
| - | Map Algebra | + | [[Functor List#Map Algebra|Map Algebra]] |
| ===== Notes ===== | ===== Notes ===== | ||
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| Only the areas corresponding to class or categories defined in the input map header are calculated. | Only the areas corresponding to class or categories defined in the input map header are calculated. | ||
| + | If the cell dimensions are represented using degrees, the areas in hectares and square meters becomes an approximation. All cells are always supposed to be of the same size. | ||
| + | |||
| + | The table containing the resulting area has the following format. | ||
| + | |||
| + | ^ Column Name ^ Key or Data? ^ Column Type ^ Description ^ | ||
| + | | "Category" | Key | Real | Category in the feature map | | ||
| + | | "Area_In_Cells" | Data | Real | Area of corresponding category in cells | | ||
| + | | "Area_In_Hectares" | Data | Real | Area of corresponding category in hectares | | ||
| + | | "Area_In_Square_Meters" | Data | Real | Area of corresponding category in square meters | | ||
| ===== Internal Name ===== | ===== Internal Name ===== | ||
| CalcAreas | CalcAreas | ||