class_docstr: Inherits time series methods from TSM class.
  
  **** VECTOR AUTOREGRESSION (VAR) MODELS ****
  
  Parameters
  ----------
  data : pd.DataFrame or np.array
      Field to specify the time series data that will be used.
  
  lags : int
      Field to specify how many lag terms the model will have. 
  
  integ : int (default : 0)
      Specifies how many time to difference the dependent variables.
  
  target : str (pd.DataFrame) or int (np.array)
      Specifies which column name or array index to use. By default, first
      column/array will be selected as the dependent variable.
  
  use_ols_covariance : Boolean
      If true use OLS covariance; if false use estimated covariance
class_docstr_tok: ["Inherits","time","series","methods","from","TSM","class",".","*","*","*","*","VECTOR","AUTOREGRESSION","(","VAR",")","MODELS","*","*","*","*","Parameters","--","--","--","--","--","data",":","pd.DataFrame","or","np.array","Field","to","specify","the","time","series","data","that","will","be","used",".","lags",":","int","Field","to","specify","how","many","lag","terms","the","model","will","have",".","integ",":","int","(","default",":","0",")","Specifies","how","many","time","to","difference","the","dependent","variables",".","target",":","str","(","pd.DataFrame",")","or","int","(","np.array",")","Specifies","which","column","name","or","array","index","to","use",".","By","default",",","first","column\/array","will","be","selected","as","the","dependent","variable",".","use_ols_covariance",":","Boolean","If","true","use","OLS","covariance",";","if","false","use","estimated","covariance"]
docstr: Plots the fit of the model
  
  Returns
  ----------
  None (plots data and the fit)
docstr_tok: ["Plots","the","fit","of","the","model","Returns","--","--","--","--","--","None","(","plots","data","and","the","fit",")"]
code: def plot_fit(self, **kwargs):
      """Plots the fit of the model
  
      Returns
      ----------
      None (plots data and the fit)
      """
      import matplotlib.pyplot as plt
      import seaborn as sns
  
      figsize = kwargs.get("figsize", (10, 7))
  
      if self.latent_variables.estimated is False:
          raise Exception("No latent variables estimated!")
      else:
          date_index = self.index[self.lags : self.data[0].shape[0]]
          mu, Y = self._model(self.latent_variables.get_z_values())
          for series in range(0, Y.shape[0]):
              plt.figure(figsize=figsize)
              plt.plot(
                  date_index, Y[series], label="Data " + str(series)
              )
              plt.plot(
                  date_index,
                  mu[series],
                  label="Filter" + str(series),
                  c="black",
              )
              plt.title(self.data_name[series])
              plt.legend(loc=2)
          plt.show()
  
imports: import sys
  import numpy
  import pandas
  import scipy.stats
  import datetime
  from ..None import families
  from ..None import output
  from ..None import tests
  from ..None import tsm
  from ..None import data_check
  from .var_recursions import create_design_matrix, custom_covariance_matrix, var_likelihood
label_desc: Use image node_id 14 for calling the VAR obj's underlying member method code with example usage: obj.plot_fit() without return types