Displaying 3 results from an estimated 3 matches for "characterst".
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2010 Jun 26
1
Passing the parameter (file name) to png()
I am fitting 3 parameter model to my response matrix and want to generate
item characterstic curve.
I want to specify file name to save item characterstic curve by passing it
as external parameter to the R batch script. The following is the code I
have written for this.
*R Script:*
library(ltm)
cmd_args = commandArgs();
for (arg in cmd_args) cat(" ", arg, "\n", sep...
2006 Jun 23
0
Testing for Significance Between Logistic Regressions
This is more of a statistics question with implementation implications.
I have used R to calculate logistic regressions for various
characterstics. I would now like to verify that the difference
between a particular subset is significantly different from the
logistic regression of the entire set.
Example.
I have a logistic regression containing every running back drafted
between 1980-2000. I have created an object, logistic.glm. I also...
2007 Jun 19
1
Dissimilarity Analysis
...nction
of the labdsv package with the sorensen-Index.
My first question is if all zeros in my table are seen as missing
values and if it islike that how can I change without turning zero
into other numbers?
Secondly I tried to perform the analysis as simple as possible, after
changing the characterstates into 1 and 2 with this code:
DisTest<-dsvdis(Test, index = "sorensen")
But I always get back this error message:
Warnung in symbol.For("dsvdis") :'symbol.For' is not needed: please
remove it
Fehler in dsvdis(Test, index = "sorensen") :
NA/NaN/Inf...