Running examples in ‘RPPanalyzer-Ex.R’ failed
The error most likely occurred in:

> base::assign(".ptime", proc.time(), pos = "CheckExEnv")
> ### Name: correctDilinterc
> ### Title: Dilution series intersect correction
> ### Aliases: correctDilinterc analyzeIntercepts getIntercepts getSignals
> ###   as.my
> 
> ### ** Examples
> 
> library(RPPanalyzer)
> # read data
> dataDir <- system.file("extdata", package="RPPanalyzer")
> setwd(dataDir)
> rawdata <- read.Data(blocksperarray=12, spotter="aushon", printFlags=FALSE)
[1] "identified only 4 of 7 gpr files saved in current folder"
[1] "identified 16 arrays"
[1] "identified 16 arrays"
      ID sample_type         sample            sample_name concentration
235  2J9     control      Caki1_HGF      Caki1_HGF_dil1_10          2.00
190 2F18 measurement Caki1_100ng_ml Caki1_100ng_ml_rep1_30          1.60
181  2F9 measurement  Caki1_25ng_ml  Caki1_25ng_ml_rep1_30          1.60
118 1J12     control       A549_HGF       A549_HGF_dil4_10          0.25
109  1J3     control     A549_noHGF      A549_noHGF_dil1_0          2.00
64  1F12 measurement   A549_50ng_ml   A549_50ng_ml_rep1_30          1.30
    dilution time replicate treatment cell_line HGF dilSeriesID Block Column
235    1.000    0         1   75ng_ml     Caki1  75       Caki1     1      1
190    1.000   30         1  100ng_ml     Caki1 100       Caki1     1      2
181    1.000   30         1   25ng_ml     Caki1  25       Caki1     1      3
118    0.125    0         1   75ng_ml      A549  75        A549     1      4
109    1.000    0         1    0ng_ml      A549   0        <NA>     1      5
64     1.000   30         1   50ng_ml      A549  50        A549     1      6
    Row
235   1
190   1
181   1
118   1
109   1
64    1
> # write data
> write.Data(rawdata,FileNameExtension="test_data")
Warning in file(file, ifelse(append, "a", "w")) :
  cannot open file 'test_dataexpression.txt': Read-only file system
Error in file(file, ifelse(append, "a", "w")) : 
  cannot open the connection
Calls: write.Data -> write.table -> file
Execution halted