diff --git a/NEWS b/NEWS
index 74cfe9126f4eb6d1dd06cbd38f774544db270a7f..eecf9d3f516831854e7fbf16290d7cb365dadeb9 100755
--- a/NEWS
+++ b/NEWS
@@ -2,10 +2,14 @@ NEWS/ChangeLog for hydroPSO
 --------------------------
 
 0.1-55	XX-May-2012
-        o 'hydromod': -) 'sim' and 'obs' are now checked for time attributes when 'gof.Ini' and/or 'gof.Fin' is/are used (thanks to M. Leh for reporting !)
-        o 'hydroPSO': -) fixed bug originated when 'gof.Ini' and/or 'gof.Fin' was/were not given as parameters for .model.FUN.args. 
-                          This bug orginated the following error during the run of the model with the best parameter set:
-                          "Error in as.Date.default(model.FUN.args[["gof.Ini"]]) : do not know how to convert 'model.FUN.args[["gof.Ini"]]' to class "Date" "
+        o 'hydromod'     : -) 'sim' and 'obs' are now checked for time attributes when 'gof.Ini' and/or 'gof.Fin' is/are used 
+                              (thanks to M. Leh for reporting !)
+        o 'hydroPSO'     : -) fixed bug originated when 'gof.Ini' and/or 'gof.Fin' was/were not given as parameters for .model.FUN.args. 
+                              (thanks to M. Leh for reporting !)
+                               This bug orginated the following error during the run of the model with the best parameter set:
+                              "Error in as.Date.default(model.FUN.args[["gof.Ini"]]) : do not know how to convert 'model.FUN.args[["gof.Ini"]]' to class "Date" "
+        o 'plot_results' : the default value for 'ftype' was changed from "dm" to "o"
+        o 'plot_out'     : the default value for 'ftype' was changed from "dm" to "o"
                              
 ##############################################################
 # Previous Releases: see old file 'ChangeLog' for details #
diff --git a/R/plot_out.R b/R/plot_out.R
index 60f60cf94f7db7e1c5499a32637fa01143a766a0..fa698c1e1fa3c28fd98d2b851bacfdd545c23242 100755
--- a/R/plot_out.R
+++ b/R/plot_out.R
@@ -25,7 +25,7 @@ plot_out <- function(sim, obs,
                      ptype=c("corr", "ts", "ecdf", "quant2ecdf"), 
                      MinMax=NULL, 
                      #beh.thr=NA, 
-                     ftype="dm", # OPTIONAL, only used when 'ptype=="ts"'.See [hydroGOF]{ggof}
+                     ftype="o",  # OPTIONAL, only used when 'ptype=="ts"'.See [hydroGOF]{ggof}
                      FUN=mean,   # OPTIONAL, only used when 'ptype=="ts"'.See [hydroGOF]{ggof}
                      verbose=TRUE,
                      
diff --git a/R/plot_results.R b/R/plot_results.R
index fc29758b281e9b4f1cec7171ccebf5b12699fadf..70e4ec76c7fab04ee9572cb57bdc8e86541906d9 100755
--- a/R/plot_results.R
+++ b/R/plot_results.R
@@ -57,7 +57,7 @@ plot_results <- function(drty.out="PSO.out",
                          #######################################################
                          # Parameters for BestSim vs Obs ('plot_out')
                          modelout.cols=NULL,
-                         ftype="dm", 
+                         ftype="o", 
                          FUN=mean,                           
                          #### OPTIONS for ('plot_out') #####
                          quantiles.desired= c(0.05, 0.5, 0.95),
diff --git a/man/ReadPlot_out.Rd b/man/ReadPlot_out.Rd
index e076ca94e1c8d929afe1c7faf6c19534e98d1548..63d64680a7ed6787ea593ba363afd59ec1e7d72c 100755
--- a/man/ReadPlot_out.Rd
+++ b/man/ReadPlot_out.Rd
@@ -24,7 +24,7 @@ read_out(file="Model_out.txt", modelout.cols=NULL, obs, MinMax=NULL, beh.thr=NA,
      cex.axis=1.2, cex.main=1.2, cex.lab=1.2, do.png=FALSE, png.width=1500, 
      png.height=900, png.res=90, png.fname="ModelOut_vs_Obs.png")
 plot_out(sim, obs, dates=NULL, ptype=c("corr", "ts", "ecdf", "quant2ecdf"), 
-     MinMax=NULL, ftype="dm", FUN=mean, verbose=TRUE, weights=NULL, byrow=TRUE, 
+     MinMax=NULL, ftype="o", FUN=mean, verbose=TRUE, weights=NULL, byrow=TRUE, 
      quantiles.desired= c(0.05,0.5,0.95), quantiles.labels=c("Q5","Q50","Q95"), 
      main=NULL, ylab="Probability", col="blue", leg.cex=1.2, 
      leg.pos="bottomright", cex.axis=1.2, cex.main=1.2, cex.lab=1.2, 
diff --git a/man/ReadPlot_results.Rd b/man/ReadPlot_results.Rd
index c3017db4dde505953973639893a18e96e6fe6030..3deb4da4eeb457f65abb85ca08d6385ecad404c9 100755
--- a/man/ReadPlot_results.Rd
+++ b/man/ReadPlot_results.Rd
@@ -56,7 +56,7 @@ plot_results(drty.out="PSO.out", param.names, gof.name="GoF", MinMax=NULL,
      ptype="one",
      %% Parameters for 'plot_out'
      modelout.cols=NULL,
-     ftype="dm", FUN=mean, 
+     ftype="o", FUN=mean, 
      quantiles.desired= c(0.05,0.5,0.95), quantiles.labels= c("Q5","Q50","Q95"),
      %% Parameters for plot_convergence'
      legend.pos="topright",