Line Bitmap
This operator is used to create a bitmap based on two specified lines. It marks as false any data point with a depth above the start line or below the stop line. There is an option to invert the output so that false data points become true and vice versa.
See also: The Effect of No data samples on the Wideband Frequency Response graph page.
Echoview accepts a single operand of the following data types as input:
- Angular position
- Boolean
- Color
- Complex angular position
- Complex power dB
- Complex Sv
- Complex TS
- Linear
- Power dB
- Pulse compressed complex angular position
- Pulse compressed complex power dB
- Pulse compressed complex Sv
- Pulse compressed complex TS
- Sv
- TS
- Unspecified dB
Settings
The Line Bitmap Variable Properties dialog box pages include (common) Variable Properties pages and these operator pages:
Operands page
Line Bitmap page
Settings |
Description |
Start line |
Specify the two lines to use to create the bitmap. Data points located above the start line or below the stop line are assigned a value of 'false'. Note: The start line must be located at a depth that is above depth of the stop line or all data will be marked as 'false'. |
Stop line |
|
Invert output |
Select this option to invert the output, i.e. mark 'false' data points as 'true' and vice versa. |