matlab如何调用function , matlab gui 怎样通过菜单项切换界面

01 首先我们打开Matlab在线编辑器，我们需要在底部的输入框中输入Matlab语句，如下图所示 02 接下来我们在输入框中输入一个matlab的function函数，如下图所示，主要是对参数的加减运算 03

操作步骤：1、先通过在命令栏中输入function，点击右键或者按F1来查询function函数的帮助文档。2、然后在帮助文档中对function函数进行了详细的功能描述，使用方法的介绍。其基本形式为：function [ ]= fun( ); 即为：[输出]

matlab怎么调用function函数：第一步打开matlab，点击新建->函数第二步默认创建了一个名为Untitled2函数，其中output_args是代表函数返回的结果，input_args代表函数输入的参数第三步输入“function[m]=test_data(n)m=n+1；e

在matlab中，如果是matlab自带的函数，则可以按照该函数的格式直接调用，如果是自己编写的函数，可以将函数写在一个文件中，之后再主文件中调用。

1、M函数除了直接用函数名调用之外，也可以进行参数传递，使得Matlab应用更加方便。M函数文件以function开头，格式为function输出变量=函数名称（输入变量）语句。2、操作步骤：先通过在命令栏中输入function，点击右键或者按F1来查

matlab如何调用function

改文件名试试，应该跟程序的默认文件名冲突了。比如原来文件名是max，可以改为max1，应该就可以运行了

你设置MATLAB的默认路径了吗？若没有通过file->setpath设置一下。若你想调用存在于目录文件夹之下的.dat 数据文件，在command窗口中输入》load *(filename).dat即可。

这里只是提示，由于你的Simulink模型里面没有连续的变量，再求解模型时就没有使用ode45求解，而是使用'VariableStepDiscrete'求解器，属于matlab自动判断，这个警告只是提示你的。不影响计算结果。你可以让这个警告不显示，通过在Confi

换个文件名保存。有untitled1这个文件存在了。也可以选择覆盖。

matlab Warning: The model name 'untitled1' is shadowing another name in the MATLAB workspace or pa

1、打开origin8.0的主页，输入相关的数据。2、下一步在菜单栏中点击Plot窗口，选择Line + Symbol这一项。3、这个时候会弹出一个菜单，确定Line + Symbol该功能设置。4、这样一来如果没问题的话，即可在曲线上标点了。

longname：就是你可以把这一列添加个名字 作为标签，画图时可以显示出来，如以温度为X轴，你就可以在X这一列的longname输入温度（T），unit代表你这一列数据的单位，如温度就可以输入℃，comment就是注释的意思。

1、 首先在电脑上打开origin，然后选择【tools】下的【options】。2、然后在出现的对话框中，找到并选择【text fonts】选项。3、然后在这个选项中，可以根据自己需要选择字体颜色和大小。4、接着在红框内选择默认字体，然后

1、将所需要的数据导入origin中，就可得到下图的数据，左击选中图中步骤1箭头所指地方的。2、这时就会出现图二所出现的小图框，鼠标移动小图框就会出现途中步骤三的数据，就可以了。该方法也同样适用于红外图数据的标记。3、

origin8.0中怎样重命名untitled

1、首先打开matlab，点击主页上的新建->APP->GUIDE，如下图所示。2、进去之后选择创建一个空的GUI界面，如下图所示。3、进去GUI编辑界面之后，可以看到左侧是各种控件，按钮，文本框，表格，文本，复选框等，右侧是界面，

在主界面的菜单选项的回调函数里用：close；新界面的tag名

实现很简单，只需要早菜单的响应中间，修改不同控件的属性，即可以实现不同控件的显示问题，例如：b= axes;set(b,'Visible','off');set(b,'Visible','on');

提供一个比较笨的方法：1.把你需要弹出的窗口做成gui，然后导出成m文件（用gui编辑器里的export），一般默认的文件名为xx_export.m2.点击菜单的回调函数里，直接写那个export.m

1、打开matlab，然后在命令窗口中输入guide打开GUI界面编程窗口，如下图所示。2、此时将弹出如下图所示的对话框，选择Blank GUI（Default），然后点击【确定】按钮，创建一个空白GUI。3、此时将进入GUI界面编辑器，如下图所示

matlab gui 怎样通过菜单项切换界面

4　仿真算法和仿真软件　81.2.5　计算机仿真的一般过程　9第2章　MATLAB程序设计语言基础　112.1　MATLAB基础　112.1.1　MATLAB的产生与发展　112.1.2　MATLAB的主要特点　132.2　MATLAB操作平台　142.2.1　MATLAB的

控制系统仿真是以控制系统的模型为基础，主要用数学模型代替实际的控制系统，以计算机为工具，对控制系统进行实验和研究的一种方法。控制系统的MATLAB语言具有功能强大、适用范围广、编程效率高和图形界面友好等优点，在各个领域得

你的Simulink模型名字为untitled.mdl，而同一目录中还有个untitled.m文件，由于MATLAB中mdl文件优先级高于m文件，所以警告说该m文件被遮蔽（shadow），也就是，那个m文件无法运行。把模型文件或m文件改名即可。需要注意，MATLAB

我这有资源 可以看下 计算机仿真技术——MATLAB在电气、自动化专业中的应用https://pan.baidu.com/s/1KH7pwombny0sQSMmkbFEdQ?pwd=1234提取码：1234 本书主要介绍MATLAB与Simulink及其在电气、自动化专业的仿真应用。全书

matlab计算机仿真

clc; clear all; close all; x = [0 1 2 3 4 5]; y = [300 150 75 35 12 5]; p = polyfit(x,y,1); plot(x,y,'*'),grid on; hold on;plot(x,p(1)*x+p(2)); xlabel('时间（s）');ylabel('温度（℃）');title('淬火温度随时间变化情况');
多了去了，你说的这些都是商业软件，免费的开源软件那就多了去了。另外我还知道 统计软件有SPSS、SAS、Minitab、R语言等。 几何软件有GeoGebra、几何画板等。 数值分析软件有Octave、Scilab、FreeMat等。
1、打开matlab，然后在命令窗口中输入guide打开GUI界面编程窗口，如下图所示。 2、此时将弹出如下图所示的对话框，选择Blank GUI（Default），然后点击【确定】按钮，创建一个空白GUI。 3、此时将进入GUI界面编辑器，如下图所示，点击菜单栏中【工具】，然后点击工具下拉菜单中的【菜单编辑器（M）】，如下图所示。 4、此时将进入【菜单编辑器】界面，如下图所示，点击左上角的【新建菜单】按钮新建菜单项。 5、点击左上角的【新建菜单】按钮创建5个菜单项，分别从Untitled 1到Untitled 5，如下图所示。 6、依次点击上面的菜单项，将右侧的菜单属性中标签和标记改成想要的名称，如下图所示，注意标记即为tag值，重命名后点击下方回调右侧的【查看】按钮查看此菜单项的回调函数，如下图所示。 7、此时将弹出【另存为】对话框，输入英文文件名后，点击【保存】按钮，此时将保存一个m文件和一个fig文件。 8、保存后将进入此界面的刚才菜单项的m文件回调函数处，如下图所示，function menu_5_Callback(hObject, eventdata, handles)下面什么也没有。 9、在function menu_5_Callback(hObject, eventdata, handles)回调函数下面添加代码： h=gcf; menu_5; close(h); 其他菜单项的回调函数类似添加，按照上面的步骤有多少个菜单项就创建多少个m文件和fig文件，注意fig名字需与菜单项的标记tag值对应。创建完成后点击【运行】按钮，运行GUI界面。 10、如果文件夹不在matlab的工作路径时可能弹出如下图所示的对话框，点击【添加到路径】按钮即可。 11、再次运行GUI界面，如下图所示，此时就可以点击菜单项切换到相应的GUI界面，且不出现切换时的整个菜单项变化。 参考资料： 百度百科-GUI
从提示可以看出，你命名的名字可能是含有了不能作为文件名的字符。比如\ / : * ? " →等 所以你换个只有字母或者数字的名字试试 希望有帮助！
选中，点F2键
没有xlswrite函数，我这个版本有，你自己拷去建个m文件 function [success,message]=xlswrite(file,data,sheet,range) % XLSWRITE Stores numeric array or cell array in Excel workbook. % [SUCCESS,MESSAGE]=XLSWRITE(FILE,ARRAY,SHEET,RANGE) writes ARRAY to the Excel % workbook, FILE, into the area, RANGE in the worksheet specified in SHEET. % FILE and ARRAY must be specified. If either FILE or ARRAY is empty, an % error is thrown and XLSWRITE terminates. The first worksheet of the % workbook is the default. If SHEET does not exist, a new sheet is added at % the end of the worksheet collection. If SHEET is an index larger than the % number of worksheets, new sheets are appended until the number of worksheets % in the workbook equals SHEET. The size defined by the RANGE should fit the % size of ARRAY or contain only the first cell, e.g. 'A2'. If RANGE is larger % than the size of ARRAY, Excel will fill the remainder of the region with % #N/A. If RANGE is smaller than the size of ARRAY, only the sub-array that % fits into RANGE will be written to FILE. The success of the operation is % returned in SUCCESS and any accompanying message, in MESSAGE. On error, % MESSAGE shall be a struct, containing the error message and message ID. % See NOTE 1. % % To specify SHEET or RANGE, but not both, you can call XLSWRITE with % just three inputs. If the third input is a string that includes a colon % character (e.g., 'D2:H4'), it specifies RANGE. If it is not (e.g., % 'SALES'), it specifies the worksheet to write to. See the next two % syntaxes below. % % [SUCCESS,MESSAGE]=XLSWRITE(FILE,ARRAY,SHEET) writes ARRAY to the Excel % workbook, FILE, starting at cell A1 and using SHEET as described above. % % [SUCCESS,MESSAGE]=XLSWRITE(FILE,ARRAY,RANGE) writes ARRAY to the Excel % workbook, FILE, in the first worksheet and using RANGE as described above. % % [SUCCESS,MESSAGE]=XLSWRITE(FILE,ARRAY) writes ARRAY to the Excel % workbook, FILE, starting at cell A1 of the first worksheet. The return % values are as for the above example. % % XLSWRITE ARRAY FILE, is the command line version of the above example. % % INPUT PARAMETERS: % file: string defining the workbook file to write to. % Default directory is pwd; default extension 'xls'. % array: m x n numeric array or cell array. % sheet: string defining worksheet name; % double, defining worksheet index. % range: string defining data region in worksheet, using the Excel % 'A1' notation. % % RETURN PARAMETERS: % SUCCESS: logical scalar. % MESSAGE: struct containing message field and message_id field. % % EXAMPLES: % % SUCCESS = XLSWRITE('c:\matlab\work\myworkbook.xls',A,'A2:C4') will write A to % the workbook file, myworkbook.xls, and attempt to fit the elements of A into % the rectangular worksheet region, A2:C4. On success, SUCCESS will contain true, % while on failure, SUCCESS will contain false. % % NOTE 1: The above functionality depends upon Excel as a COM server. In % absence of Excel, ARRAY shall be written as a text file in CSV format. In % this mode, the SHEET and RANGE arguments shall be ignored. % % See also XLSREAD, WK1WRITE, CSVWRITE. % % Copyright 1984-2007 The MathWorks, Inc. % $Revision: 1.1.6.14 $ $Date: 2007/12/06 13:30:16 $ %============================================================================== % Set default values. Sheet1 = 1; if nargin < 3 sheet = Sheet1; range = ''; elseif nargin < 4 range = ''; end if nargout > 0 success = true; message = struct('message',{''},'identifier',{''}); end % Handle input. try % handle requested Excel workbook filename. if ~isempty(file) if ~ischar(file) error('MATLAB:xlswrite:InputClass','Filename must be a string.'); end % check for wildcards in filename if any(findstr('*', file)) error('MATLAB:xlswrite:FileName', 'Filename must not contain *.'); end [Directory,file,ext]=fileparts(file); if isempty(ext) % add default Excel extension; ext = '.xls'; end file = abspath(fullfile(Directory,[file ext])); [a1 a2] = fileattrib(file); if a1 && ~(a2.UserWrite == 1) error('MATLAB:xlswrite:FileReadOnly', 'File cannot be read-only.'); end else % get workbook filename. error('MATLAB:xlswrite:EmptyFileName','Filename is empty.'); end % Check for empty input data if isempty(data) error('MATLAB:xlswrite:EmptyInput','Input array is empty.'); end % Check for N-D array input data if ndims(data)>2 error('MATLAB:xlswrite:InputDimension',... 'Dimension of input array cannot be higher than two.'); end % Check class of input data if ~(iscell(data) || isnumeric(data) || ischar(data)) && ~islogical(data) error('MATLAB:xlswrite:InputClass',... 'Input data must be a numeric, cell, or logical array.'); end % convert input to cell array of data. if iscell(data) A=data; else A=num2cell(data); end if nargin > 2 % Verify class of sheet parameter. if ~(ischar(sheet) || (isnumeric(sheet) && sheet > 0)) error('MATLAB:xlswrite:InputClass',... 'Sheet argument must be a string or a whole number greater than 0.'); end if isempty(sheet) sheet = Sheet1; end % parse REGION into sheet and range. % Parse sheet and range strings. if ischar(sheet) && ~isempty(strfind(sheet,':')) range = sheet; % only range was specified. sheet = Sheet1;% Use default sheet. elseif ~ischar(range) error('MATLAB:xlswrite:InputClass',... 'Range argument must be a string in Excel A1 notation.'); end end catch exception if ~isempty(nargchk(2,4,nargin)) error('MATLAB:xlswrite:InputArguments',nargchk(2,4,nargin)); else success = false; message = exceptionHandler(nargout, exception); end return; end %------------------------------------------------------------------------------ % Attempt to start Excel as ActiveX server. try Excel = actxserver('Excel.Application'); catch exception %#ok warning('MATLAB:xlswrite:NoCOMServer',... ['Could not start Excel server for export.\n' ... 'XLSWRITE will attempt to write file in CSV format.']); if nargout > 0 [message.message,message.identifier] = lastwarn; end % write data as CSV file, that is, comma delimited. file = regexprep(file,'(\.xls)$','.csv'); % change extention to 'csv'. try dlmwrite(file,data,','); % write data. catch exception exceptionNew = MException('MATLAB:xlswrite:dlmwrite', 'An error occurred on data export in CSV format.'); exceptionNew = exceptionNew.addCause(exception); if nargout == 0 % Throw error. throw(exceptionNew); else success = false; message.message = exceptionNew.getReport; message.identifier = exceptionNew.identifier; end end return; end %------------------------------------------------------------------------------ try % Construct range string if isempty(strfind(range,':')) % Range was partly specified or not at all. Calculate range. [m,n] = size(A); range = calcrange(range,m,n); end catch exception success = false; message = exceptionHandler(nargout, exception); return; end %------------------------------------------------------------------------------ try bCreated = false; if ~exist(file,'file') % Create new workbook. bCreated = true; %This is in place because in the presence of a Google Desktop %Search installation, calling Add, and then SaveAs after adding data, %to create a new Excel file, will leave an Excel process hanging. %This workaround prevents it from happening, by creating a blank file, %and saving it. It can then be opened with Open. ExcelWorkbook = Excel.workbooks.Add; ExcelWorkbook.SaveAs(file) ExcelWorkbook.Close(false); end %Open file ExcelWorkbook = Excel.workbooks.Open(file); if ExcelWorkbook.ReadOnly ~= 0 %This means the file is probably open in another process. error('MATLAB:xlswrite:LockedFile', 'The file %s is not writable. It may be locked by another process.', file); end try % select region. % Activate indicated worksheet. message = activate_sheet(Excel,sheet); % Select range in worksheet. Select(Range(Excel,sprintf('%s',range))); catch exceptionInner % Throw data range error. throw(MException('MATLAB:xlswrite:SelectDataRange', sprintf('Excel returned: %s.', exceptionInner.message))); end % Export data to selected region. set(Excel.selection,'Value',A); ExcelWorkbook.Save ExcelWorkbook.Close(false) % Close Excel workbook. Excel.Quit; catch exception try ExcelWorkbook.Close(false); % Close Excel workbook. catch end Excel.Quit; delete(Excel); % Terminate Excel server. if (bCreated && exist(file, 'file') == 2) delete(file); end success = false; message = exceptionHandler(nargout, exception); end %-------------------------------------------------------------------------- function message = activate_sheet(Excel,Sheet) % Activate specified worksheet in workbook. % Initialise worksheet object WorkSheets = Excel.sheets; message = struct('message',{''},'identifier',{''}); % Get name of specified worksheet from workbook try TargetSheet = get(WorkSheets,'item',Sheet); catch exception %#ok % Worksheet does not exist. Add worksheet. TargetSheet = addsheet(WorkSheets,Sheet); warning('MATLAB:xlswrite:AddSheet','Added specified worksheet.'); if nargout > 0 [message.message,message.identifier] = lastwarn; end end % activate worksheet Activate(TargetSheet); %------------------------------------------------------------------------------ function newsheet = addsheet(WorkSheets,Sheet) % Add new worksheet, Sheet into worsheet collection, WorkSheets. if isnumeric(Sheet) % iteratively add worksheet by index until number of sheets == Sheet. while WorkSheets.Count < Sheet % find last sheet in worksheet collection lastsheet = WorkSheets.Item(WorkSheets.Count); newsheet = WorkSheets.Add([],lastsheet); end else % add worksheet by name. % find last sheet in worksheet collection lastsheet = WorkSheets.Item(WorkSheets.Count); newsheet = WorkSheets.Add([],lastsheet); end % If Sheet is a string, rename new sheet to this string. if ischar(Sheet) set(newsheet,'Name',Sheet); end %------------------------------------------------------------------------------ function [absolutepath]=abspath(partialpath) % parse partial path into path parts [pathname filename ext] = fileparts(partialpath); % no path qualification is present in partial path; assume parent is pwd, except % when path string starts with '~' or is identical to '~'. if isempty(pathname) && isempty(strmatch('~',partialpath)) Directory = pwd; elseif isempty(regexp(partialpath,'(.:|\\\\)','once')) && ... isempty(strmatch('/',partialpath)) && ... isempty(strmatch('~',partialpath)); % path did not start with any of drive name, UNC path or '~'. Directory = [pwd,filesep,pathname]; else % path content present in partial path; assume relative to current directory, % or absolute. Directory = pathname; end % construct absulute filename absolutepath = fullfile(Directory,[filename,ext]); %------------------------------------------------------------------------------ function range = calcrange(range,m,n) % Calculate full target range, in Excel A1 notation, to include array of size % m x n range = upper(range); cols = isletter(range); rows = ~cols; % Construct first row. if ~any(rows) firstrow = 1; % Default row. else firstrow = str2double(range(rows)); % from range input. end % Construct first column. if ~any(cols) firstcol = 'A'; % Default column. else firstcol = range(cols); % from range input. end try lastrow = num2str(firstrow+m-1); % Construct last row as a string. firstrow = num2str(firstrow); % Convert first row to string image. lastcol = dec2base27(base27dec(firstcol)+n-1); % Construct last column. range = [firstcol firstrow ':' lastcol lastrow]; % Final range string. catch exception %#ok error('MATLAB:xlswrite:CalculateRange', 'Invalid data range: %s.', range); end %---------------------------------------------------------------------- function string = index_to_string(index, first_in_range, digits) letters = 'A':'Z'; working_index = index - first_in_range; outputs = cell(1,digits); [outputs{1:digits}] = ind2sub(repmat(26,1,digits), working_index); string = fliplr(letters([outputs{:}])); %---------------------------------------------------------------------- function [digits first_in_range] = calculate_range(num_to_convert) digits = 1; first_in_range = 0; current_sum = 26; while num_to_convert > current_sum digits = digits + 1; first_in_range = current_sum; current_sum = first_in_range + 26.^digits; end %------------------------------------------------------------------------------ function s = dec2base27(d) % DEC2BASE27(D) returns the representation of D as a string in base 27, % expressed as 'A'..'Z', 'AA','AB'...'AZ', and so on. Note, there is no zero % digit, so strictly we have hybrid base26, base27 number system. D must be a % negative integer bigger than 0 and smaller than 2^52. % % Examples % dec2base(1) returns 'A' % dec2base(26) returns 'Z' % dec2base(27) returns 'AA' %----------------------------------------------------------------------------- d = d(:); if d ~= floor(d) || any(d(:) 1/eps) error('MATLAB:xlswrite:Dec2BaseInput',... 'D must be an integer, 0 <= D <= 2^52.'); end [num_digits begin] = calculate_range(d); s = index_to_string(d, begin, num_digits); %------------------------------------------------------------------------------ function d = base27dec(s) % BASE27DEC(S) returns the decimal of string S which represents a number in % base 27, expressed as 'A'..'Z', 'AA','AB'...'AZ', and so on. Note, there is % no zero so strictly we have hybrid base26, base27 number system. % % Examples % base27dec('A') returns 1 % base27dec('Z') returns 26 % base27dec('IV') returns 256 %----------------------------------------------------------------------------- if length(s) == 1 d = s(1) -'A' + 1; else cumulative = 0; for i = 1:numel(s)-1 cumulative = cumulative + 26.^i; end indexes_fliped = 1 + s - 'A'; indexes = fliplr(indexes_fliped); indexes_in_cells = mat2cell(indexes, 1, ones(1,numel(indexes))); d = cumulative + sub2ind(repmat(26, 1,numel(s)), indexes_in_cells{:}); end %------------------------------------------------------------------------------- function messageStruct = exceptionHandler(nArgs, exception) if nArgs == 0 throwAsCaller(exception); else messageStruct.message = exception.message; messageStruct.identifier = exception.identifier; end
笔记本的USB转串口可能有兼容问题，改成台式机就可以用了。