Data Acquisition Toolbox

isdioline

Check for lines

Syntax

• out = isdioline(obj.Line(index))
  

Arguments

obj.Line(index)	One or more lines contained by obj.
out	A logical value.

Description

out = isdioline(obj.Line(index)) returns a logical 1 to out if obj.Line(index) is a line. Otherwise, a logical 0 is returned.

Remarks

isdioline does not determine if lines are valid (associated with hardware). To check for valid lines, use the isvalid function.

Typically, you use isdioline directly only when you are creating your own M-files.

Example

Suppose you create the function myfunc for use with the Data Acquisition Toolbox. If myfunc is passed one or more lines as an input argument, then the first thing you should do in the function is check if the argument is a line.

• function myfunc(line)
  % Determine if a line was passed.
  if ~isdioline(line)
     error('The argument passed is not a line.');
  end
  

You can examine the Data Acquisition Toolbox M-files for examples that use isdioline.

See Also

Functions

isvalid

ischannel

isvalid