Undefined function 'export_fig' for input arguments of type 'double'.

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Douglas
Douglas 2014-8-18
评论： Star Strider 2014-8-19
Undefined function 'export_fig' for input arguments of type 'double'.
Error in show_results (line 216) export_fig(fig_handle,[fname,'.pdf'])
Can anybody give me some insight into this error? thanks.

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回答（3 个）

Star Strider
Star Strider 2014-8-18
编辑：Star Strider 2014-8-18
The ‘export_fig’ function is a popular and well-reviewed function available on the File Exchange here. You need to download it and add it to you MATLAB user path.
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Star Strider
Star Strider 2014-8-18
I’m now completely lost.
I’m not familiar with the details of export_fig and don’t use it often. Figure handles are (in my experience) always double-precision variables. If it works in other parts of the code, see if there’s a variable named ‘export_fig’ between the line that previously worked and the line that threw the error. The only possibility that I can think of is that you are somehow overshadowing it.

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Jan
Jan 2014-8-18
Set a breakpoint in this line and run the code again. If it stops there check:
which export_fig
Perhaps you reset the path temporarily or have a typo in this line.
Douglas
Douglas 2014-8-18
export_fig is called once in the program. The input is in a config file. If I change the config file export_fig will run. Sometimes, though, I get the error Undefined function 'export_fig' for input arguments of type 'double'.
Hope that is cleared.
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Star Strider
Star Strider 2014-8-18
Douglas’s second Answer moved here:
No. The config file changes some esoteric variables but the paths are hard coded.
Star Strider
Star Strider 2014-8-19
Either the config file is overshadowing ‘export_fig’ or it (or something else) is telling your code to look in the wrong directory for it. Those are the only things I can think of that would cause that particular problem.
Without seeing your code and the config file to see if there is a problem with one or both of them, I am out of ideas.

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