Lineplot in plt

CHAPTER

                                                                                                           FOUR

                                                          FREQUENTLY ASKED QUESTIONS

A list of common questions.

4.1 How can I fit multi-dimensional data?

The fitting routines accept data arrays that are 1 dimensional and double precision. So you need to convert the data
and model (or the value returned by the objective function) to be one dimensional. A simple way to do this is to use
numpy’s numpy.ndarray.flatten(), for example:
def residual(params, x, data=None):
    ....
    resid = calculate_multidim_residual()
    return resid.flatten()

4.2 How can I fit multiple data sets?

As above, the fitting routines accept data arrays that are 1 dimensional and double precision. So you need to convert
the sets of data and models (or the value returned by the objective function) to be one dimensional. A simple way to
do this is to use numpy’s numpy.concatenate(). As an example, here is a residual function to simultaneously
fit two lines to two different arrays. As a bonus, the two lines share the ‘offset’ parameter:
      def fit_function(params, x=None, dat1=None, dat2=None): 
      		model1 = params[’offset’].value + x * params[’slope1’].value 
        	model2 = params[’offset’].value + x * params[’slope2’].value
           	resid1 = dat1 - model1 
            resid2 = dat2 - model2 
            return numpy.concatenate((resid1, resid2))

4.3 How can I fit complex data?

As with working with multidimensional data, you need to convert your data and model (or the value returned by the
objective function) to be double precision floating point numbers. One way to do this would be to use a function like
this:
def realimag(array):
    return np.array([(x.real, x.imag) for x in array]).flatten()

to convert the complex array into an array of alternating real and imaginary values. You can then use this function on
the result returned by your objective function:

                                                                                                                   13

Source: readkong.com

Similar codes

1 vote318 views2 answers
Increase instagram followers using python
Python
0 vote259 views1 answer
How do you amke function in python
Python
0 vote276 views2 answers
Python default dictonary
Python
11 votes274 views4 answers
Create a 2d array in python
Python
0 vote247 views1 answer
Python community
Python
2 votes265 views2 answers
Mode
Python
-1 vote262 views1 answer
Python print empty line
Python
0 vote291 views1 answer
Dataframe no names from file
Python
0 vote260 views1 answer
Check if back is pressed python
Python
1 vote271 views1 answer
Python delete elements from list / range
Python