urve is shown for <code>chickweed</code>.</p>


<h3>Examples</h3>

<pre><code class='language-R'>
## Fitting two-parameter log-logistic curves to each combination of species and temperature 
##  (upper limit fixed at 1)
## Note: Rows 24 and 62 are omitted from the dataset (all mungbean seeds germinated 
##  and thus no right-censoring in this case)

## germLL.2 &lt;- drm(germinated ~ start + end, species:factor(temp), 
## data = germination[c(1:23, 25:61, 63:192), ], fct = LL.2(), type = "event")
## plot(ge