Running examples in ‘seedreg-Ex.R’ failed
The error most likely occurred in:

> base::assign(".ptime", proc.time(), pos = "CheckExEnv")
> ### Name: multicurve
> ### Title: Merge multiple curves into a single graph
> ### Aliases: multicurve
> 
> ### ** Examples
> 
> library(seedreg)
> data("aristolochia")
> attach(aristolochia)
> a=LM_model(trat,germ)

$Coefficients
            Estimate Std Error   t value      P-value   
(Intercept)   -52.50 8.0436071 -6.526922 6.166973e-09 **
trat            3.54 0.3095986 11.434161 2.398736e-18 **

$test
                       Parameter      values
1            Optimum temperature  35.0000000
2   Optimum temperature response  71.4000000
3            Minimal temperature  15.0000000
4   Minimal temperature response   0.6000000
5  Predicted maximum basal value          NA
6  Predicted minimum basal value          NA
7                            AIC 706.9321172
8                            BIC 714.0781971
9                      r-squared   0.7443336
10                          RMSE  19.3344253

$VIF
[1] NA

[[4]]

> b=LL_model(trat,germ,npar = "LL.3")
$Coefficients
               Estimate Std Error   t value      P-value   
b:(Intercept) -19.40819 7.2234673 -2.686825 8.834104e-03 **
d:(Intercept)  63.94663 2.6591940 24.047373 7.589711e-38 **
e:(Intercept)  23.57567 0.7028374 33.543565 5.265615e-48 **

$values
                       Parameter      values
1            Optimum temperature  35.0000000
2   Optimum temperature response  63.9167699
3            Minimal temperature  15.0000000
4   Minimal temperature response   0.0098744
5  Predicted maximum basal value          NA
6  Predicted minimum basal value  18.3683368
7                            AIC 661.2956178
8                            BIC 670.8237244
9                      r-squared   0.7900000
10                          RMSE  14.3558723

[[3]]

> c=BC_model(trat,germ, npar = "BC.4")
$Coefficients
                Estimate  Std Error   t value      P-value   
b:(Intercept) -13.957213  3.6556392 -3.817995 2.726669e-04 **
d:(Intercept) 250.774747 60.3259646  4.156995 8.380546e-05 **
e:(Intercept)  25.505952  0.6951316 36.692263 2.126565e-50 **
f:(Intercept)  -5.617971  1.7401792 -3.228387 1.838928e-03 **

$values
                       Parameter      values
1            Optimum temperature  29.1414141
2   Optimum temperature response  75.3297253
3            Minimal temperature  15.0000000
4   Minimal temperature response   0.1007687
5  Predicted maximum basal value          NA
6  Predicted minimum basal value  16.9061906
7                            AIC 642.3420163
8                            BIC 654.2521495
9                      r-squared   0.8400000
10                          RMSE  12.5937300

[[3]]

> d=CD_model(trat,germ, npar = "CRS.4")
$Coefficients
                 Estimate    Std Error   t value      P-value   
b:(Intercept)   -14.42145    3.5312045 -4.084003 1.085486e-04 **
d:(Intercept)  6110.38908 1944.3164277  3.142693 2.387074e-03 **
e:(Intercept)    25.81624    0.7578171 34.066589 4.361048e-48 **
f:(Intercept) -6231.70537 2001.2831503 -3.113855 2.603523e-03 **

$values
                       Parameter      values
1            optimum temperature  28.9633963
2   Optimum temperature response  75.7505378
3            Minimal temperature  15.0000000
4   Minimal temperature response   0.1115036
5  Predicted maximum basal value          NA
6  Predicted minimum basal value  16.8361836
7                            AIC 642.3427825
8                            BIC 654.2529157
9                      r-squared   0.8400000
10                          RMSE  12.5937903

[[3]]

> multicurve(list(a,b,c,d))
Error in plots[[i]][[]] : missing subscript
Calls: multicurve
Execution halted