diff --git a/R/rawR.R b/R/rawR.R
index 42c4037..915fc83 100644
--- a/R/rawR.R
+++ b/R/rawR.R
@@ -708,7 +708,9 @@ plot.rawRspectrum <- function(x, relative = TRUE, centroid = FALSE, SN = FALSE,
                  y = x$centroid.intensity[i],
                  pos = 3,
                  labels = paste(format(x$centroid.mZ[i], nsmall = 4),
-                                "\nz = ", x$charges[i], "\nR = "), cex = 0.5)
+                                "\nz = ", x$charges[i], "\nR = ",
+                                x$resolutions[i]),
+                 cex = 0.5)
         
         }
         
diff --git a/src/rawR.cs b/src/rawR.cs
index d54860f..7930ac5 100644
--- a/src/rawR.cs
+++ b/src/rawR.cs
@@ -305,6 +305,7 @@ public static void WriteSpectrumAsRcode(this IRawDataPlus rawFile, string filena
                                 file.WriteLine("\tmZ = c(" + string.Join(", ", centroidStream.Masses) + "),");
                                 file.WriteLine("\tintensity = c(" + string.Join(", ", centroidStream.Intensities) + "),");
                                 file.WriteLine("\tnoises = c(" + string.Join(", ", centroidStream.Noises) + "),");
+				file.WriteLine("\tresolutions = c(" + string.Join(", ", centroidStream.Resolutions.ToArray()) + "),");
                                 file.WriteLine("\tcharges = c(" + string.Join(", ", centroidStream.Charges) + "),");
                                 file.WriteLine("\tbaselines = c(" + string.Join(", ", centroidStream.Baselines) + "),");