error not have load_testdata function

[fukexue]

未定义函数或变量 'load_testdata'。

出错 demo_rigid (line 3) X0 = load_testdata(data_name);

[wangfudong]

You can find 'load_testdata.m' in the directory './src/'. It can be fixed by putting all the folders into the Matlab path setting.