Undefined function or variable 'channelDepth'. Error in Untitled2 (line 6) 'ChannelDe​pth',chann​elDepth,..​.

numPaths = 5;
propSpeed = 1520;
channelDepth = 100;
clearvars
isopath{1} = phased.IsoSpeedUnderwaterPaths(...
          'ChannelDepth',channelDepth,...
          'NumPathsSource','Property',...
          'NumPaths',numPaths,...
          'PropagationSpeed',propSpeed,...
          'BottomLoss',0.5,...
          'TwoWayPropagation',true);

isopath{2} = phased.IsoSpeedUnderwaterPaths(...
          'ChannelDepth',channelDepth,...
          'NumPathsSource','Property',...
          'NumPaths',numPaths,...
          'PropagationSpeed',propSpeed,...
          'BottomLoss',0.5,...
          'TwoWayPropagation',true);
fc = 20e3;   % Operating frequency (Hz)

[Tiasa Ghosh]

Your question is too vague and unclear. You need to frame the question properly for people to understand so that they can help you with the issue. Refer this: https://de.mathworks.com/matlabcentral/answers/6200-tutorial-how-to-ask-a-question-on-answers-and-get-a-fast-answer

[Miftahul Firdaus]

ok thank you

Answer 1

[Walter Roberson]

The

clearvars

is erasing all memory of the assignments you did above that point.