Some cleanup of the legend positioning, which can be used starting from

R version 2.1.0.



git-svn-id: http://kriemhild.uft.uni-bremen.de/svn/drfit@28 d1b72e20-2ee0-0310-a1c4-ad5adbbefcdc

3 files changed, 9 insertions, 16 deletions

diff --git a/DESCRIPTION b/DESCRIPTION
index c9de7dc..3eee40b 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -1,5 +1,5 @@
 Package: drfit
-Version: 0.03-27
+Version: 0.03-28
 Date: 2005-07-16
 Title: Dose-response data evaluation
 Author: Johannes Ranke <jranke@uni-bremen.de>
diff --git a/R/drfit.R b/R/drfit.R
index db7bf50..38f8e75 100644
--- a/R/drfit.R
+++ b/R/drfit.R
@@ -235,7 +235,7 @@ drfit <- function(data, startlogEC50 = NA, chooseone=TRUE,
 drplot <- function(drresults, data, dtype = "std", alpha = 0.95,
         path = "./", fileprefix = "drplot", overlay = FALSE,
         postscript = FALSE, png = FALSE, bw = TRUE,
-        colors = 1:8,devoff=T,lpos=FALSE)
+        colors = 1:8,devoff=T,lpos="topright")
 {
     unitlevels <- levels(as.factor(drresults$unit))
     if (length(unitlevels) == 1) {
@@ -264,15 +264,6 @@ drplot <- function(drresults, data, dtype = "std", alpha = 0.95,
         }
     }
 
-    # Legend position
-    if (!lpos[[1]]) {
-        lx <- lhd - 1
-        ly <- hr + 0.1
-    } else {
-        lx <- lpos[[1]]
-        ly <- lpos[[2]]
-    }
-
     # Prepare overlay plot if requested
     if (overlay)
     {
@@ -335,7 +326,7 @@ drplot <- function(drresults, data, dtype = "std", alpha = 0.95,
                         xlab=paste("Decadic Logarithm of the dose in ", unit),    
                         ylab="Normalized response")
                 }
-                if (!overlay) legend("topright", i,lty = 1, col = color, inset=0.05)
+                if (!overlay) legend(lpos, i,lty = 1, col = color, inset=0.05)
                 tmp$dosefactor <- factor(tmp$dose)  # necessary because the old
                                                     # factor has all levels, not 
                                                     # only the ones tested with
@@ -402,7 +393,7 @@ drplot <- function(drresults, data, dtype = "std", alpha = 0.95,
             }
         }
     }
-    if (overlay) legend("topright", dsubstances,lty = 1, col = colors, inset=0.05)
+    if (overlay) legend(lpos, dsubstances,lty = 1, col = colors, inset=0.05)
     if (overlay && (postscript || png)) {
         if (devoff) {
             dev.off()
@@ -484,7 +475,7 @@ checkplate <- function(plate,db="cytotox")
             points(log10(drdatalist[[i]]$conc),drdatalist[[i]][[responsetype]],col=i);
         }
 
-        legend(3.0,1.5,substances, pch=1, col=1:length(substances))
+        legend("topright",substances, pch=1, col=1:length(substances), inset=0.05)
         title(main=paste("Plate ",plate," - ",levels(platedata$experimentator)," - ",levels(platedata$type)))
     }
 }
@@ -540,7 +531,7 @@ checksubstance <- function(substance,db="cytotox",experimentator="%",celltype="%
         points(log10(platelist[[i]]$conc),platelist[[i]][[responsetype]],col=i);          
     }       
     
-    legend(3.5,1.7,plates, pch=1, col=1:length(plates))
+    legend("topright", plates, pch=1, col=1:length(plates), inset=0.05)
     title(main=paste(substance," - ",levels(data$experimentator)," - ",levels(data$type)))
  
     cat("Substanz ",substance,"\n",
diff --git a/man/drplot.Rd b/man/drplot.Rd
index b162d45..ecd6895 100644
--- a/man/drplot.Rd
+++ b/man/drplot.Rd
@@ -63,7 +63,9 @@
     This is a vector of colors, defaulting to 1:8, used for plotting the data.
     }
   \item{lpos}{
-    A optional vector with the x and y position of the upper left corner of the legend. The default guess is not always the optimum.}
+    An optional argument defaulting to "topright" specifying the position
+    of the legend by being passed to the legend function. See the help for the
+    legend function for all possiblities.} 
   \item{devoff}{
     If set to FALSE, the closing of the device after creation of an overlay png
     or postscript graph will be left out, so texts and other elements can be