MATLAB: I am receiving a “Make Error” when trying to run a simple model in Simulink containing a MATLAB function block. Can anyone help please

make errormatlab function blocksimulink

I am receiving the following "Make Error" when trying to run a simple model in Simulink containing a MATLAB function block:

Making simulation target "untitled_sfun", …

'untitled_sfun.bat' is not recognized as an internal or external command, operable program or batch file.

The model is called "untitled". I know it has something to do with the MATLAB function block because the model works without it. Can anyone help please?

Best Answer

You need to install a compiler (if you have not already) and use

mex -setup

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have you chosen your compiler by

mex -setup

MATLAB: Datacursormode: how to permanently turn on “make new data tip”

Although the official documentation of the datacursormode function says explicitly that:

"You place data tips only by clicking data objects on graphs. You cannot place them programmatically (by executing code to position a data cursor)."

This is in fact WRONG AND MISLEADING, as I explained far back in 2011: https://undocumentedmatlab.com/blog/controlling-plot-data-tips

The general solution for your specific request:

1. First, set the plot line's button-down function to a custom callback function:

hLine = plot(...);
set(hLine, 'ButtonDownFcn', @lineClickedCallback);

2. Next, implement this callback function that will add the requested data-tip at the clicked location:

function lineClickedCallback(hLine, eventData)
   % Get the clicked position from the event-data
   pos = eventData.IntersectionPoint;
   % Get the line's containing figure
   hFig = ancestor(hLine,'figure');
   % Get the figure's datacursormode object
   cursorMode = datacursormode(hFig);  
   % Create a new data-tip at the clicked location
   hDatatip = cursorMode.createDatatip(hLine);
   set(hDatatip, 'Position',pos, 'MarkerSize',5, 'MarkerFaceColor','none', 'MarkerEdgeColor','r', 'Marker','o', 'HitTest','off');
end

You can modify this code to make the data-tip and/or marker look different.

Best Answer

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