Displaying 3 results from an estimated 3 matches for "shah2020".
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",
2011 Jan 10
0
Capturing error messages while running R through an external program
I am trying to automate scoring done by applying 3 parameter model of IRT to
the response data. I call R from PHP to do this using exec(). Since I face
convergence issues while using R, it is important that the program captures
the error messages like "the solution is not stable" given by R while
running tpm().
How does one do that? I find sink() of no use to do that.
Regards,
Maulik
2012 Nov 21
4
Function storing error messages in 32 bit R-2.15.2 version
I am using 32 bit R - 2.15.2 version and working on package ltm. The
program does not give me any warning message when I run tpm command for a
dataset. If run tpm command for the same dataset in 64-bit R 2.15.1
version, I get the warning message shown below.
Can someone suggest why is no warning message being generated by 32-bit R?
Or is it being generated but not getting printed? Which function