| Tool Name | Grid Calculator |
| Tool ID | 1 |
| Library ID | grid_calculus |
| Version | 1.0 |
| Author(s) | O.Conrad (c) 2023 |
| + | Addition |
| - | Subtraction |
| * | Multiplication |
| / | Division |
| abs(x) | Absolute Value |
| mod(x, y) | Returns the floating point remainder of x/y |
| int(x) | Returns the integer part of floating point value x |
| sqr(x) | Square |
| sqrt(x) | Square Root |
| exp(x) | Exponential |
| pow(x, y) | Returns x raised to the power of y |
| x ^ y | Returns x raised to the power of y |
| ln(x) | Natural Logarithm |
| log(x) | Base 10 Logarithm |
| pi() | Returns the value of Pi |
| sin(x) | Sine, expects radians |
| cos(x) | Cosine, expects radians |
| tan(x) | Tangent, expects radians |
| asin(x) | Arcsine, returns radians |
| acos(x) | Arccosine, returns radians |
| atan(x) | Arctangent, returns radians |
| atan2(x, y) | Arctangent of x/y, returns radians |
| min(x, y) | Returns the minimum of values x and y |
| max(x, y) | Returns the maximum of values x and y |
| gt(x, y) | Returns true (1), if x is greater than y, else false (0) |
| x > y | Returns true (1), if x is greater than y, else false (0) |
| lt(x, y) | Returns true (1), if x is less than y, else false (0) |
| x < y | Returns true (1), if x is less than y, else false (0) |
| eq(x, y) | Returns true (1), if x equals y, else false (0) |
| x = y | Returns true (1), if x equals y, else false (0) |
| and(x, y) | Returns true (1), if both x and y are true (i.e. not 0) |
| or(x, y) | Returns true (1), if at least one of both x and y is true (i.e. not 0) |
| ifelse(c, x, y) | Returns x, if condition c is true (i.e. not 0), else y |
| rand_u(x, y) | Random number, uniform distribution with minimum x and maximum y |
| rand_g(x, y) | Random number, Gaussian distribution with mean x and standard deviation y |
| xpos(), ypos() | The coordinate (x/y) for the center of the currently processed cell |
| col(), row() | The currently processed cell's column/row index |
| ncols(), nrows() | Number of the grid system's columns/rows |
| nodata(), nodata(g) | No-data value of the resulting (empty) or requested grid (g = g1...gn, h1...hn) |
| cellsize(), cellsize(g) | Cell size of the resulting (empty) or requested grid (g = h1...hn) |
| cellarea(), cellarea(g) | Cell area of the resulting (empty) or requested grid (g = h1...hn) |
| xmin(), xmin(g) | Left bound of the resulting (empty) or requested grid (g = h1...hn) |
| xmax(), xmax(g) | Right bound of the resulting (empty) or requested grid (g = h1...hn) |
| xrange(), xrange(g) | Left to right range of the resulting (empty) or requested grid (g = h1...hn) |
| ymin(), ymin(g) | Lower bound of the resulting (empty) or requested grid (g = h1...hn) |
| ymax(), ymax(g) | Upper bound of the resulting (empty) or requested grid (g = h1...hn) |
| yrange(), yrange(g) | Lower to upper range of the resulting (empty) or requested grid (g = h1...hn) |
| zmin(g) | Minimum value of the requested grid (g = g1...gn, h1...hn) |
| zmax(g) | Maximum value of the requested grid (g = g1...gn, h1...hn) |
| zrange(g) | Value range of the requested grid (g = g1...gn, h1...hn) |
| zmean(g) | Mean value of the requested grid (g = g1...gn, h1...hn) |
| zstddev(g) | Standard deviation of the requested grid (g = g1...gn, h1...hn) |
| Name | Type | Identifier | Description | Constraints |
|---|---|---|---|---|
| Input | ||||
| Grids | grid list, input, optional | GRIDS | in the formula these grids are addressed in order of the list as 'g1, g2, g3, ...' | |
| Grids from different Systems | grid list, input, optional | XGRIDS | in the formula these grids are addressed in order of the list as 'h1, h2, h3, ...' | |
| Output | ||||
| Result | grid, output | RESULT | ||
| Options | ||||
| Resampling | choice | RESAMPLING | Available Choices: [0] Nearest Neighbour [1] Bilinear [2] Cubic 1 [3] Cubic 2 Default: 3 | |
| Formula | text | FORMULA | Default: (g1 - g2) / (g1 + g2) | |
| Use No-Data | boolean | USE_NODATA | Check this in order to include no-data cells in the calculation. | Default: 0 |
| Data Type | data type | TYPE | Available Choices: [0] bit [1] unsigned 1 byte integer [2] signed 1 byte integer [3] unsigned 2 byte integer [4] signed 2 byte integer [5] unsigned 4 byte integer [6] signed 4 byte integer [7] unsigned 8 byte integer [8] signed 8 byte integer [9] 4 byte floating point number [10] 8 byte floating point number Default: 9 | |