the EDIT section:

The edit-section offers tools to modify data, either the raw signal or calculated variables. Note that some functions are present only for certain analysis types: e.g. breathing cycle options are only available when analyzing respiration data.



the 'active event'-dropwdownlist

If multiple event types are available, select the one you wish to edit. The active event markers will be activated for drag-and-drop, insertion and  deletion.


the 'insert'-button

Use this button to insert an event (e.g. an R-wave-marker) by clicking with the mouse on a desired position on the graph of the active variable.


the 'insert 1'-button

If you wish to insert an r-wave marker exactly between two adjacent markers, select this button and click on the left half of the interval enclosed by the two markerks


the 'insert 2 '-button

This works exactly like 'insert 1' except that two markers will be inserted so that the interval is evenly divided in thirds.


the 'insert on peak'-button

This button looks for a local maximum near your mouse click and sets the r-wave on this maximum.



the '< insert'- & the ' insert >'-button

These two buttons are used for inserting r-wave-markers at a distance from a given marker that is decuded from preceding/subsequent present markers. If you have for instance a long interval of non-recognized r-waves, you can use these button repeatedly to fill the interval with a heart rate given before or after the blank period.

the 'delete'-button

Use this button to delete an event (e.g. an R-wave-marker)  by clicking with the mouse on a desired marker on the graph of the active variable.

the 'delete-box'-button

use this option to delete multiple r-wave-markers at a time, by drawing a rectangle around them

the 'exclude'-button

The exclusion box-tool allows to draw a rectangle with the mouse around a range of data values, that you consider to be of good quality. Values outside this range (above or below) are set to NaN. Values left and right of the drawn rectangle are not modified. This is mostly necessary if you wish to quickly edit long sequences of data without going in to every detail.




the 'insert box'-button

this option is meant specifically for ecg-data-editing to help you include multiple non-recognized r-waves, that in general have a normal waveform, but were missed by the identifaction algorithm. Draw a rectangle around the maxima of these r-waves, ignoring already recognized r-waves. anslab will insert one event marker for each lokal maximum found inside your selection box, that has a minimum distance to present markers.

the 'define artifact'-button

You can mark artifacts by using the 'define artifact'-button. After pushing this button, click twice on the data window to mark beginning and end of the artifact. A horizontal red bar is then displayed to symbolize the artifact definition. When variables are saved, artifact intervals will be filled with 'NaN's.


the 'remove artifact'-button
Click on a previously defined artifact marker to remove it.

the 'connect'-button
This tool is a combination of 'exclusion box' and 'interpolate': first values above or below the drawn rectangle are set to NaN, next these are interpolated from neighbouring values. You can use this tool to roughly 'cut' out large artifacts in your data, as shown in the example on the left.









the 'draw'-button
this button lets you modify the loaded signal by drawing lines defined by three clicks on the axis of the active variable, as demonstrated in the graph on the left.











the 'copy'- and the 'paste'-button
these two button let you first copy a data segment as defined by a mouse-drawn rectangle and then paste it to a position again defined by a  mouse-drawn rectangle. If the size of the two rectangles do not match, the data segment is resampled to have the correct length, stretching or compressing the waveform.

the 'low smoothing'-button
transformes the signal in a mouse-drawn rectangle with a moving average, smoothing out sharp corners.

the 'high smoothing'-button
same as 'low smoothing', only the moving average is calculated several times.

the 'interpolate'-button
this button interpolates NaN values in the time range defined by a mouse-drawn rectangle from surrounding non-NaN-values.

the 'synchronize'-button
this button synchronized NaN-values among several calculated traces. This is most useful for multiple variables, that depend on the same raw signal, like respiration variables: if the raw respiration signal is artifactual, the calculated variables are all invalid. Synchronizing lets you then transfer NaN-segments to other traces, so you only have to edit an artifact once.

the 'restore'-button
this button restores all RAW- and EVENT traces from an initial copy that is created directly after loading.

the 'undo'-button
this button executes commands to undo editing operations (under construction). While the button is active, you can go back further. Only operations of the 'editing'-section can be undone, and you can only go back until the last 'Resumpoint'. You can go forward in editing history using the redo button.

the 'redo'-button
this button executes commands to redo editing operations that were previously undone with the 'undo'-button.. While the button is active, you can go forward.  Keep in mind that once you perform a new editing action at a midpoint of the editing history, all later 'redo'-actions are deleted.