setBlock¶

This function adds or replaces a block of events within a Pulseq sequence. It accepts events in uncompressed form and stores them in the sequence's internal, compressed, non-redundant libraries. It handles different input formats: a pre-defined block structure, individual events, or a duration with subsequent events. Error checking ensures that event durations do not exceed a specified duration when provided.

Syntax¶

function setBlock(index, varargin)

Calling Pattern¶

seq.setBlock(...)

Parameters¶

Required Parameters¶

Name	Type	Description	Example	Units
`index`	double	The index specifying the location (block number) within the sequence where the new block should be added or replaced. Indexing starts at 1.	`1`

Optional Parameters¶

Name	Type	Default	Description	Example
`trajectory_delay`	double	`0`	Delay added to the trajectory of the block. This is relevant to gradient and RF events in the block. (Units: seconds)	`0.001`

Returns¶

Output	Type	Description
`none`	none	This function modifies the Pulseq sequence object in place. It does not return any value.

Examples¶

% Replace existing block with modified version
b1.rf = rf2;
seq2.setBlock(1, b1);

% Set block with specific events
seq.setBlock(1, rf_event, grad_x, grad_y, grad_z);

% Create block with specified duration and events
seq.setBlock(3, 0.01, rf_event, grad_event);