diff --git a/DESCRIPTION b/DESCRIPTION
index fe95c84..bed35f0 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -10,9 +10,9 @@ Maintainer: Yue Fan <yuef@umich.edu>
 Description: MQTL mapping in bisulfite sequencing studies by fitting a binomial mixed model, incorporating allelic-specific methylation pattern.
 Encoding: UTF-8
 License: GPL (>= 2)
-Depends: R (>= 3.6.0)
+Depends: R (>= 3.5.0)
 Imports: Rcpp (>= 0.12.19),foreach,doParallel,parallel,Matrix
 LinkingTo: Rcpp, RcppArmadillo
 RoxygenNote: 6.1.1
 NeedsCompilation: yes
-Packaged: 2019-07-08 20:14:35 UTC; yuef
+Packaged: 2019-07-09 12:48:28 UTC; yuef
diff --git a/R/IMAGE.R b/R/IMAGE.R
index 8875fd1..3eebca0 100644
--- a/R/IMAGE.R
+++ b/R/IMAGE.R
@@ -35,7 +35,10 @@
 #' @author Yue Fan, Shiquan Sun, Xiang Zhou
 #' @examples 
 #' data(exampledata)
-#' res=image(exampledata$geno,exampledata$data,exampledata$K)
+#' attach(exampledata)
+#' res=image(geno,data,K)
+#' closeAllConnections()
+#' detach(exampledata)
 
 
 
diff --git a/R/exampledata.R b/R/exampledata.R
index e2994d3..f51cc94 100644
--- a/R/exampledata.R
+++ b/R/exampledata.R
@@ -3,6 +3,10 @@
 #' A simulated example dataset of IMAGE.
 #' The variables are as follows:
 #'
+#' @docType data
+#' @keywords datasets
+#' @name exampledata
+#' @usage data(exampledata)
 #' @format Contains the following objects:
 #' \describe{
 #'   \item{geno}{a data list containing 2 haplotypes.}
@@ -11,5 +15,8 @@
 #' }
 #' @examples 
 #' data(exampledata)
-#' res=image(exampledata$geno,exampledata$data,exampledata$K)
+#' attach(exampledata)
+#' res=image(geno,data,K)
+#' closeAllConnections()
+#' detach(exampledata)
 "exampledata"
\ No newline at end of file
diff --git a/build/partial.rdb b/build/partial.rdb
index dec1d96..bf4ab46 100644
Binary files a/build/partial.rdb and b/build/partial.rdb differ
diff --git a/man/exampledata.Rd b/man/exampledata.Rd
index 2cecbcc..ee75108 100644
--- a/man/exampledata.Rd
+++ b/man/exampledata.Rd
@@ -11,7 +11,7 @@
   \item{K}{a genetic relationship matrix.}
 }}
 \usage{
-exampledata
+data(exampledata)
 }
 \description{
 A simulated example dataset of IMAGE.
@@ -19,6 +19,9 @@ The variables are as follows:
 }
 \examples{
 data(exampledata)
-res=image(exampledata$geno,exampledata$data,exampledata$K)
+attach(exampledata)
+res=image(geno,data,K)
+closeAllConnections()
+detach(exampledata)
 }
 \keyword{datasets}
diff --git a/man/image.Rd b/man/image.Rd
index 92bffdc..ec9adcf 100644
--- a/man/image.Rd
+++ b/man/image.Rd
@@ -50,7 +50,10 @@ Binomial mixed models (BMM) are fitted using the penalized quasi-likelihood (PQL
 }
 \examples{
 data(exampledata)
-res=image(exampledata$geno,exampledata$data,exampledata$K)
+attach(exampledata)
+res=image(geno,data,K)
+closeAllConnections()
+detach(exampledata)
 }
 \references{
 Breslow, N.E. and Clayton, D.G. (1993) Approximate Inference in Generalized Linear Mixed Models. Journal of the American Statistical Association 88, 9-25.
diff --git a/src/IMAGE.dll b/src/IMAGE.dll
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index 0000000..230bc84
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diff --git a/src/IMAGE.o b/src/IMAGE.o
new file mode 100644
index 0000000..263f999
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diff --git a/src/RcppExports.o b/src/RcppExports.o
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index 0000000..1d5d77a
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diff --git a/src/rcpparma_hello_world.o b/src/rcpparma_hello_world.o
new file mode 100644
index 0000000..600a027
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