About line/time series status

Echoview uses line/time series status to:

indicate the quality of the measurement (for time series) or segment (for line data) between two points
manage the display of breaks between measurements or segments
use as a quality-control tool for Editable and Virtual line types in bathymetric applications

The status of the measurement or line segment between two consecutive data points is taken from the point to the right. Echoview considers the validity of the time series points when determining line/time series status.

Invalid data points may be due to:

a no-data value (in some cases)
a data point outside the valid range of the data type
a reserved value
a duplicate value or multiple values at a single time

The data type and data format determine how invalid data are handled.

Notes:

Virtual bottom feature data use the None status for no data.
CSV files exported by an Echoview version prior to Echoview 15, or manually created CSV files (Heading, Pitch, Roll, Speed (water current) and length), do not have a Status header. Upon use in Echoview 15, the derived variables from such data are assigned status values.

Breaks in data

A valid data point combined with a status of None is used to represent a break in the time series.

Derived or calculated data types

Line/time series status is assigned to derived or calculated time series variables. Time series include data types under: Raw lines, Raw attitude, Raw movement, Virtual bottom feature and the Virtual transmission time series.

You may manually assign a break in time series data contained in CSV files.

Echoview expects that a time series consists of a series of single measurements at unique times. When multiple measurements occur at a single time, only one measurement is used. A message is displayed flagging the issue. Vessel log data handling also checks for out of sequence or erroneous distance measurements.

Virtual line and Editable line types

A line/time series status of good or bad is automatically assigned to line data when a time series is created by line picking.

Breaks in editable lines are stored in a shorter way. Breaks in virtual lines are stored in an longer way. This difference affects both echogram display and exported data.

To manually assign line status for these line types:

Make a line active by selecting it from the Line and Surface tool list .
Select the section of the line to which you are assigning a line status, using one of the selection tools.
On the Shortcut menu (right-click), point to Set Line Status and then click the required line status

Notes:

When you assign line status manually, new interpolated coordinate points are created.
If you choose None, the section of the line will be deleted.
User-defined keyboard shortcuts are available for each type of line status.

Segment color and thickness

Echoview has the following line/time series status values for time series measurements (or line segments) displayed in graphs and echograms. On echograms, lines are drawn in line/time series status colors with a thickness. Global custom line/time series status colors and thickness may be specified for all time series in the EV File Properties dialog box or local color and thickness may be set for a particular time series variable in the Time Series Properties dialog box.

Status export value	Description
0	None None is not displayed. It represents an undefined time series position.
1	Unverified Unverified or uncertain status is displayed in the default color of cyan.
2	Bad Bad is displayed in the default color of magenta.
3	Good Good is displayed in the default color of green for editable and virtual time series. Good is displayed in the default color of yellow for raw time series.

Usage of line/time series status in Echoview

Line/time series status has the following uses:

Only pings with a good exclude-below line status are used to calculate the mean line depth (Exclude_below_line_depth_mean) and mean line range (Exclude_below_line_range_mean).
Pings with a bad exclude-below line status can optionally be excluded from analyses (on the Analysis page of the Variable Properties dialog box).
The exclude-below line status of a ping is the status of the chosen exclude-below line at the time of the ping.
Use the Time series set status operator to change the status of time series measurements.