getrect and ginput are not supported by codegen

Hi guys. I am developing a .DLL using the command "codegen", and in an intermediate process I need to select some data from a plot made by the .DLL, then the operations dependent on this selected data continue. For this I am using the "getrect" and "ginput" functions, however, when compiling the .DLL a message appears saying that these functions are not supported by "codegen". In that sense, is there any other function that is supported by "codegen" that I can use?

Answer 1

[Harsh]

Hi Ricardo,

The “ginput” function allows you to graphically select points from a figure using the mouse and the “getrect” function enables you to interactively select a rectangular region from a figure using the mouse. Since both of these are interactive graphical functions they are not supported for codegen. “.DLL” files need to run independently of MATLAB, user interaction via MATLAB figures is not possible. As a workaround you can do the following:

• Instead of selecting points interactively, pass the coordinates to your function
• Define selected regions in advance instead of using “getrect”
• Since “.DLL” files cannot interact with MATLAB figures, do this before calling the “.DLL” files in MATLAB