Search
Select by comparing the source field value Use option using the given Condition to the given value or values, which can be values from a field, a specified value, or the result of an expression that evaluates to a numeric data type. A Channel option allows choosing the source channel to use from a multi channel image.
Use options:
- channel average - Use the average value for the given Channel for pixels in the tile. For example, if the image has a single channel with pixel values giving terrain elevation, this will be the average terrain elevation in the tile.
- channel maximum - Use the maximum value for the given Channel for pixels in the tile. For example, if the image has a single channel with pixel values giving terrain elevation, this will be the maximum terrain elevation in the tile.
- channel minimum - Use the minimum value for the given Channel for pixels in the tile. For example, if the image has a single channel with pixel values giving terrain elevation, this will be the minimum terrain elevation in the tile.
- channel std deviation - Use the standard deviation of values for the given Channel for pixels in the tile.
- channel std deviation pop - Use the square root of the population variance of values for the given Channel for pixels in the tile.
- channel sum - Use the sum of values for the given Channel for pixels in the tile.
- channel variance - Use the sample variance of values for the given Channel for pixels in the tile.
- channel variance pop - Use the population variance of values for the given Channel for pixels in the tile.
- number of channels - Use the number of channels in the tile.
- number of missing pixels - Use the number of NULL pixels in the tile.
- number of pixels - Use the number of non-NULL pixels in the tile.
- x size - Use the x size of the tile in number of pixels. A 128x128 tile will have an x size of 128.
- y size - Use the y size of the tile in number of pixels. A 128x128 tile will have a y size of 128.
Condition options:
- between - Select records with values between the At least and At most values, inclusive.
- equal (=) - Select records with values equal to the given value.
- greater (>) - Select records with values greater than the given value.
- greater or equal (>=) - Select records with values greater than or equal to the given value.
- less (<) - Select records with values less than the given value.
- less or equal (<=) - Select records with values less than or equal to the given value.
- not equal (<>) - Select records with values not equal to the given value.
If we would like to select records that are NOT variations of the above, for example not between, select on the basis of one of the above and press Ctrl-I or Edit - Select Inverse to invert the selection. Selecting using between and then pressing Ctrl-I is the equivalent of "not between" the given values.
Launch the template by choosing a tile field in the Select pane and then double-clicking the Search template. When the template launches we can specify options.
Search : channel average
Use the average value for the given Channel for pixels in the tile. For example, if the image has a single channel with pixel values giving terrain elevation, this will be the average terrain elevation in the tile.
Search : channel maximum
Use the maximum value for the given Channel for pixels in the tile. For example, if the image has a single channel with pixel values giving terrain elevation, this will be the maximum terrain elevation in the tile.
Search : channel minimum
Use the minimum value for the given Channel for pixels in the tile. For example, if the image has a single channel with pixel values giving terrain elevation, this will be the minimum terrain elevation in the tile.
Search : channel std deviation
Use the standard deviation of values for the given Channel for pixels in the tile.
Search : channel std deviation pop
Use the square root of the population variance of values for the given Channel for pixels in the tile.
Search : channel sum
Use the sum of values for the given Channel for pixels in the tile.
Search : channel variance
Use the sample variance of values for the given Channel for pixels in the tile.
Search : channel variance pop
Use the population variance of values for the given Channel for pixels in the tile.
Search : number of channels
Use the number of channels in the tile.
Search : number of missing pixels
Use the number of NULL pixels in the tile.
Search : number of pixels
Use the number of non-NULL pixels in the tile.
Search : x size
Use the x size of the tile in number of pixels. A 128x128 tile will have an x size of 128.
Search : y size
Use the y size of the tile in number of pixels. A 128x128 tile will have a y size of 128.