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Error in plot when infinite value warning in model #37

@sssimonyang

Description

@sssimonyang

The package version is 0.6.2.
When I was plotting

> model = coxph(Surv(os, status) ~ group, total)
Warning message:
In coxph.fit(X, Y, istrat, offset, init, control, weights = weights,  :
  Loglik converged before variable  1,2 ; coefficient may be infinite. 
> print(forest_model(model))
Error in grDevices::axisTicks(log10(exp(forest_min_max)), TRUE) : 
  log - axis(), 'at' creation, _LARGE_ range: invalid {xy}axp or par; nint=5
	 axp[0:1]=(1e-307,1e+308), usr[0:1]=(0,inf); i=615, ni=123

It will run into error in plot when coefficient may be infinite warning is showed.
The result of model seems normal, only some value is too big.

> model
Call:
coxph(formula = Surv(os, status) ~ group, data = total)

              coef exp(coef)  se(coef)     z     p
groupIHR 1.943e+01 2.746e+08 2.993e+03 0.006 0.995
groupEHM 2.032e+01 6.712e+08 2.993e+03 0.007 0.995

Likelihood ratio test=96.25  on 2 df, p=< 2.2e-16
n= 224, number of events= 89 

I think it is acceptable to see inf value when the value is too big.

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