3. isfield判断struct是否有指定子filed % 定义一个struct patient.name = 'John Doe'; patient.billing = 127.00; patient.test = [79 75 73; 180 178 177.5; 220 210 205]; % 检测该struct是否存在指定filed isfield(patient,'billing') ans = 1 4.isempty用于判断矩阵是否为空 例子 B = rand(2,2,...
if isa(h,'sdpvar') if is(h,'complex') error('Complex valued objective does not make sense.'); end end if nargin>=3 options = varargin{3}; if ~(isempty(options) | isa(options,'struct')) error('Third argument (options) should be an sdpsettings struct (or empty).'); end if is...
ifempty,they will be made the correct%size,0-by-1)B=B(:);Beq=Beq(:);%Checkforconsistencyoflinear constraints,before evaluating%(potentially expensive)user functions%Set empty linear constraint matrices to the correct size,0-by-nifisempty(Aeq)Aeq=reshape(Aeq,0,sizes.nVar);endifisempty(A)...
MATLAB does not check the validity of MATLAB data structures created in C/C++ or Fortran using one of the Matrix Library create functions (for example,mxCreateStructArray). Using invalid syntax to create a MATLAB data structure can result in unexpected behavior in your C/C++ or Fortran program...
To deploy a map application that uses a custom basemap, setIsDeployabletotrue. If you create the custom basemap from an MBTiles file, then you must include the file in the deployed application package, unless you deploy the application to the same computer you used to compile the application...
If not available, an empty struct is returned. Return and remove data of the specified type from the buffer. See the Tobii SDK documentation for a description of the fields. consumeTimeRange() stream: a string, possible values: gaze, eyeOpenness, eyeImage, externalSignal, timeSync and ...
Initialize the function outputs iport and tnext to empty values, as in the following code excerpt: tnext = []; iport = struct(); 4. Make note of the data types of ports defined for the entity under simulation. The EDA Simulator Link MQ software converts VHDL data types to comparable ...
out1 = param_check(in2); if (nargout == 0) && ~isempty(out1) error('NNET:Arguments',out1); end case 'apply' if (nargin < 3), error('NNET:Arguments','Not enough input arguments for ''apply'' action.'); end if (nargin > 3), error('NNET:Arguments','Too many input argument...
if (matlabpool('size')==0) matlabpool; end catch if isempty(gcp('nocreate')) parpool; end end However, I know that matlabpool is called in other parts of Drake. Perhaps the solution you prefer is something like expanding and using the checkDependency() function to select the command to...
gui_State = struct('gui_Name', mfilename, ...'gui_Singleton', gui_Singleton, ...'gui_OpeningFcn', @Changes_OpeningFcn, ...'gui_OutputFcn', @Changes_OutputFcn, ...'gui_LayoutFcn', [] , ...'gui_Callback', []);ifnargin && ischar(varargin{1}) ...