****我是第一次使用Lavaan pkg在R中运行CFA。我已经设置好了一切，但是由于某种原因，我没有一个因子加载设置为1。我想知道为什么Lavaan没有自动为每个因子设置一个加载。

这是我使用的代码：****

model1<-'comm=~relimport+relthink+relhurt
    Ind=~attend+prayer+relread
    relimport~~relthink'
  
    fit1 <-cfa(model1, data=SIM1, std.lv=TRUE)
    summary (fit1, ci=T, standardized=T, fit.measures=T )
    modindices(fit1, minimum.value=10, sort=TRUE)
    lavaanPlot(model=fit1, node_options=list(shape="box", fontname= "Helvetica"),
           edge_options=list(color="grey"), coefs=TRUE, stand=TRUE)

以下是我的输出：

lavaan 0.6.13 ended normally after 30 iterations
  Estimator                                         ML
  Optimization method                           NLMINB
  Number of model parameters                        14
                                                  Used       Total
  Number of observations                           796        1769
Model Test User Model:
                                                      
  Test statistic                                 2.707
  Degrees of freedom                                 7
  P-value (Chi-square)                           0.911
Model Test Baseline Model:
  Test statistic                              1394.558
  Degrees of freedom                                15
  P-value                                        0.000
User Model versus Baseline Model:
  Comparative Fit Index (CFI)                    1.000
  Tucker-Lewis Index (TLI)                       1.007
Loglikelihood and Information Criteria:
  Loglikelihood user model (H0)              -7374.779
  Loglikelihood unrestricted model (H1)      -7373.425
                                                      
  Akaike (AIC)                               14777.558
  Bayesian (BIC)                             14843.072
  Sample-size adjusted Bayesian (SABIC)      14798.615
Root Mean Square Error of Approximation:
  RMSEA                                          0.000
  90 Percent confidence interval - lower         0.000
  90 Percent confidence interval - upper         0.017
  P-value H_0: RMSEA <= 0.050                    1.000
  P-value H_0: RMSEA >= 0.080                    0.000
Standardized Root Mean Square Residual:
  SRMR                                           0.008
Parameter Estimates:
  Standard errors                             Standard
  Information                                 Expected
  Information saturated (h1) model          Structured
Latent Variables:
                   Estimate  Std.Err  z-value  P(>|z|) ci.lower ci.upper   Std.lv
  comm =~                                                                        
    relimport         0.796    0.050   15.875    0.000    0.698    0.894    0.796
    relthink          0.735    0.062   11.784    0.000    0.613    0.857    0.735
    relhurt           0.660    0.061   10.827    0.000    0.540    0.779    0.660
  Ind =~                                                                         
    attend            0.685    0.048   14.408    0.000    0.591    0.778    0.685
    prayer            1.605    0.065   24.794    0.000    1.478    1.732    1.605
    relread           1.134    0.052   21.960    0.000    1.033    1.235    1.134
  Std.all
         
    0.926
    0.672
    0.455
         
    0.523
    0.844
    0.757
Covariances:
                   Estimate  Std.Err  z-value  P(>|z|) ci.lower ci.upper   Std.lv
 .relimport ~~                                                                   
   .relthink         -0.007    0.069   -0.104    0.917   -0.143    0.129   -0.007
  comm ~~                                                                        
    Ind               0.609    0.043   14.108    0.000    0.525    0.694    0.609
  Std.all
         
   -0.027
         
    0.609
Variances:
                   Estimate  Std.Err  z-value  P(>|z|) ci.lower ci.upper   Std.lv
   .relimport         0.106    0.071    1.489    0.137   -0.033    0.245    0.106
   .relthink          0.658    0.084    7.874    0.000    0.494    0.822    0.658
   .relhurt           1.668    0.097   17.268    0.000    1.479    1.857    1.668
   .attend            1.242    0.068   18.253    0.000    1.109    1.376    1.242
   .prayer            1.040    0.125    8.286    0.000    0.794    1.286    1.040
   .relread           0.955    0.075   12.676    0.000    0.807    1.103    0.955
    comm              1.000                               1.000    1.000    1.000
    Ind               1.000                               1.000    1.000    1.000
  Std.all
    0.143
    0.549
    0.793
    0.726
    0.288
    0.426