Hello,
There's a general purpose way to get the members of the object returned
by summary functions. What you have tried unsuccessfully is a particular
case of that method: assign summary to a variable and see what's int it.
si <- summary(indication3)
class(si) # see the class of summary object
[1] "NULL"
Null? It returns nothing so the general purpose method doesn't work.
More on this later.
Taking a look at the package source, file indval.R, function
summary.indval shows how it is done:
round(sum(object$indcls),digits=2)
So use 'indication3' instead of 'object and get rid of round() to have
more decimals. The following should do it.
sum(indication3$indcls)
As for the value [not] returned by summary, it is recommended that it
returns something and have the print out be handled by a
print.summaryXXX method. In which case, after seeing of what class, we
could have printed the members one by one, in a loop or something similar.
Hope this helps,
Rui Barradas
Em 23-07-2012 17:03, katse escreveu:
Hi everybody,
I am doing Indicator species analysis using the function "indval" from the
package "labdsv".
For further analysis I need the values "Number of Significant Indicators"
and "Sum of Indicator Values" that is calculated from the summary on my
indval object.
indication3<-indval(Veg,caver3,numitr=4999)
summary(indication3)
cluster indicator_value probability
X14 1 0.9423 0.00020004
X10 1 0.8993 0.00040008
...
Sum of probabilities = 22.7643528705741
Sum of Indicator Values = 57.55
Sum of Significant Indicator Values = 17.03
Number of Significant Indicators = 22
Significant Indicator Distribution
1 2 3
10 10 2
I tried to extract them using "summary(indication3)$Sum of Indicator Values"
for example, but it doesn't work. Is there a way to get the values?
Someone has an idea?
Thanks
katse
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