I am finding the structName.?ClassName method of arguments validation does not work when trying to validate name-value arguments for the VideoWriter class.
I have a short function:
function myDemo(videoData,fileName,vwOpts)
arguments
videoData
fileName
vwOpts.?VideoWriter
end
disp(vwOpts);
videoObj = VideoWriter(fileName);
% Open video, write, close, etc.
end % MakeVideo
I would expect that calling this function with VideoWriter properties such as FrameRate would result in vwOpts being a struct that contains values passed to the function. However, I am getting the error:
>> myDemo(0:10,"myVideo.avi","FrameRate",20)
Error using myDemo
Too many input arguments.
I validated my approach by attempting to filter for arguments to the Bar() function by mimicking the matlab.graphics.chart.primitive.Bar example shown in the documentation and was successful.
I noticed I get this same error when failing to specify the full name of the Bar class, so looked for other methods of specifying the VideoWriter class, using matlab.audiovideo.VideoWriter as the full class name, with no success.
What am I missing about this approach? Is there a way of locating the full name of the VideoWriter class, or is there some reason I should not expect this example to work?
Thanks!I am finding the structName.?ClassName method of arguments validation does not work when trying to validate name-value arguments for the VideoWriter class.
I have a short function:
function myDemo(videoData,fileName,vwOpts)
arguments
videoData
fileName
vwOpts.?VideoWriter
end
disp(vwOpts);
videoObj = VideoWriter(fileName);
% Open video, write, close, etc.
end % MakeVideo
I would expect that calling this function with VideoWriter properties such as FrameRate would result in vwOpts being a struct that contains values passed to the function. However, I am getting the error:
>> myDemo(0:10,"myVideo.avi","FrameRate",20)
Error using myDemo
Too many input arguments.
I validated my approach by attempting to filter for arguments to the Bar() function by mimicking the matlab.graphics.chart.primitive.Bar example shown in the documentation and was successful.
I noticed I get this same error when failing to specify the full name of the Bar class, so looked for other methods of specifying the VideoWriter class, using matlab.audiovideo.VideoWriter as the full class name, with no success.
What am I missing about this approach? Is there a way of locating the full name of the VideoWriter class, or is there some reason I should not expect this example to work?
Thanks! I am finding the structName.?ClassName method of arguments validation does not work when trying to validate name-value arguments for the VideoWriter class.
I have a short function:
function myDemo(videoData,fileName,vwOpts)
arguments
videoData
fileName
vwOpts.?VideoWriter
end
disp(vwOpts);
videoObj = VideoWriter(fileName);
% Open video, write, close, etc.
end % MakeVideo
I would expect that calling this function with VideoWriter properties such as FrameRate would result in vwOpts being a struct that contains values passed to the function. However, I am getting the error:
>> myDemo(0:10,"myVideo.avi","FrameRate",20)
Error using myDemo
Too many input arguments.
I validated my approach by attempting to filter for arguments to the Bar() function by mimicking the matlab.graphics.chart.primitive.Bar example shown in the documentation and was successful.
I noticed I get this same error when failing to specify the full name of the Bar class, so looked for other methods of specifying the VideoWriter class, using matlab.audiovideo.VideoWriter as the full class name, with no success.
What am I missing about this approach? Is there a way of locating the full name of the VideoWriter class, or is there some reason I should not expect this example to work?
Thanks! arguments validation MATLAB Answers — New Questions

​