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Problem about calling newton-cg optimization method #22
Description
Hello @mattloper ,
Thank you very much for this wonderful tool! I am trying to use chumpy in one of my project, and I met one problem when calling the ch.minimize function with method newton-cg. I dive into the source code of chumpy and found that the problem is caused by function ns_jacfunc in chumpy/optimization.py. To be more concrete, a function 'hstack' is called in this function, but actually it is not defined. I know both numpy and chumpy have hstack, but it seems you didn't import them in this py file. I have also tried to import them, but it didn't help (some other problems occur after it, so I guess you don't want to use np.hstack or ch.hstack here). Do you know how to fix this bug?
Best,
Yongchi
Activity
gdwei commentedon Jun 23, 2018
I've met the same problem. But adding 'from optimization_internal import hstack' to chumpy/optimization.py solves my problem. And you can also modify the statement to 'result = sp.hstack(jacs)'