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geoscene3d:toolbox:toolbox_grid_operations:grid_value_operations [2020/02/12 20:37] – rebecca130301_gmail.com | geoscene3d:toolbox:toolbox_grid_operations:grid_value_operations [2020/03/22 19:05] (current) – external edit 127.0.0.1 | ||
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(Select a single 2D or 3D grid file) | (Select a single 2D or 3D grid file) | ||
- | Use this operation to manipulate the values in a single grid file. Both floating point value grids and discrete value grids may be manipulated although most operations are available only to floating point value grids. Some of the operations are similar to the ones used in the [[: | + | Use this operation to manipulate the values in a single grid file. Both floating point value grids and discrete value grids may be manipulated although most operations are available only to floating point value grids. Some of the operations are similar to the ones used in the [[: |
==== Operating ==== | ==== Operating ==== | ||
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After the operation type has been selected various settings in the form are enabled. When pressing " | After the operation type has been selected various settings in the form are enabled. When pressing " | ||
- | __Operation: | + | __Operation: |
__Value:__ Numeric value used in several operation types\\ | __Value:__ Numeric value used in several operation types\\ | ||
__Get Blank Value:__ Retrieves the blank value for the current grid to the " | __Get Blank Value:__ Retrieves the blank value for the current grid to the " | ||
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Performs a simple box smooth of the grid. Each node in the produced grid is a simple mean of the nodes in the old grid within the specified box size. Larger boxes will smooth more that smaller boxes. In most cases the box should not be larger than 1 or 2. | Performs a simple box smooth of the grid. Each node in the produced grid is a simple mean of the nodes in the old grid within the specified box size. Larger boxes will smooth more that smaller boxes. In most cases the box should not be larger than 1 or 2. | ||
- | __Box Radius: __ Controls the size of the smooth box. A radius of 1 will include the center node as well as all the neighboring nodes (2D Grids = 9 nodes, 3D Grids = 27 nodes). A radius of 2 will include the center node as well as all the neighboring two nodes in all directions (2D Grids = 25 nodes, 3D Grids = 125 nodes). | + | __Box Radius:__ Controls the size of the smooth box. A radius of 1 will include the center node as well as all the neighboring nodes (2D Grids = 9 nodes, 3D Grids = 27 nodes). A radius of 2 will include the center node as well as all the neighboring two nodes in all directions (2D Grids = 25 nodes, 3D Grids = 125 nodes). |
==== Discrete Value Grid Operations (3D) ==== | ==== Discrete Value Grid Operations (3D) ==== | ||
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Each node in a discrete value grid represents an integer value. That value is usually associated with a symbol from a symbol list. The symbol list is assigned in the main form of the Toolbox. The operation replaces all occurrences of a specified value with a new specified value. | Each node in a discrete value grid represents an integer value. That value is usually associated with a symbol from a symbol list. The symbol list is assigned in the main form of the Toolbox. The operation replaces all occurrences of a specified value with a new specified value. | ||
- | __Existing: __ Select the symbol that should be replaced. The list contains the symbols currently used in the grid. | + | __Existing: |
- | __New: __ Select the symbol that should replace the existing symbol selected above. The list contains all the symbols available in the current symbol list. | + | __New:__ Select the symbol that should replace the existing symbol selected above. The list contains all the symbols available in the current symbol list. |
- | __Blank Symbol: __ If this check box is checked the selected existing symbol will be replaced with blank values | + | __Blank Symbol:__ If this check box is checked the selected existing symbol will be replaced with blank values |
- | __Fill Down: __ Blank nodes are assigned the value from the first node above that is not blank. | + | __Fill Down:__ Blank nodes are assigned the value from the first node above that is not blank. |
- | __Fill Up: __ Blank nodes are assigned the value from the first node below that is not blank. | + | __Fill Up:__ Blank nodes are assigned the value from the first node below that is not blank. |