diff --git a/PlottingTool.mlapp b/PlottingTool.mlapp
index 6065590..198a949 100644
Binary files a/PlottingTool.mlapp and b/PlottingTool.mlapp differ
diff --git a/fourierPlotFnc.m b/fourierPlotFnc.m
index d63f82b..d79cda2 100644
--- a/fourierPlotFnc.m
+++ b/fourierPlotFnc.m
@@ -14,8 +14,23 @@ function fourierPlotFnc(data, fileSettings, checkboxes, start, stop, yAxis, chan
             if fileSettings{2}.Value == 0
                 [timeArray, yData] = timeAxisWithIncrement(data, fileSettings{3}.Value, beginning, ending, channel); 
             else
-                timeArray = data(:,1);
-                yData = data(:, channel);
+                timeIndex = 1;
+                while data(timeIndex,1) < str2double(start{channel}.Value)
+                    timeIndex = timeIndex + 1;
+                end
+
+                startIndex = timeIndex;
+
+                while data(timeIndex, 1) <= str2double(stop{channel}.Value) || timeIndex >= length(data)
+                    timeArray(timeIndex - startIndex + 1) = data(timeIndex,1);
+                    timeIndex = timeIndex + 1;
+                end
+
+                endIndex = timeIndex;
+
+                for timeIndex = startIndex:endIndex - 1
+                    yData(timeIndex - startIndex + 1) = data(timeIndex, channel);
+                end
             end
 
             fs = 1 / fileSettings{3}.Value;
diff --git a/graphPlotFnc.m b/graphPlotFnc.m
index 2b1d177..acaf919 100644
--- a/graphPlotFnc.m
+++ b/graphPlotFnc.m
@@ -14,8 +14,24 @@ function graphPlotFnc(data, fileSettings, checkboxes, start, stop, yAxis, channe
             if fileSettings{2}.Value == 0
                 [timeArray, yData] = timeAxisWithIncrement(data, fileSettings{3}.Value, beginning, ending, channel); 
             else
-                timeArray = data(:,1);
-                yData = data(:, channel);
+
+                timeIndex = 1;
+                while data(timeIndex,1) < str2double(start{channel}.Value)
+                    timeIndex = timeIndex + 1;
+                end
+
+                startIndex = timeIndex;
+
+                while data(timeIndex, 1) <= str2double(stop{channel}.Value) || timeIndex >= length(data)
+                    timeArray(timeIndex - startIndex + 1) = data(timeIndex,1);
+                    timeIndex = timeIndex + 1;
+                end
+
+                endIndex = timeIndex;
+
+                for timeIndex = startIndex:endIndex - 1
+                    yData(timeIndex - startIndex + 1) = data(timeIndex, channel);
+                end
             end
 
         
diff --git a/meanPlotFnc.m b/meanPlotFnc.m
index 453402a..c2d8bbd 100644
--- a/meanPlotFnc.m
+++ b/meanPlotFnc.m
@@ -14,8 +14,23 @@ function meanPlotFnc(data, fileSettings, checkboxes, start, stop, yAxis, channel
             if fileSettings{2}.Value == 0
                 [timeArray, yData] = timeAxisWithIncrement(data, fileSettings{3}.Value, beginning, ending, channel); 
             else
-                timeArray = data(:,1);
-                yData = data(:, channel);
+                timeIndex = 1;
+                while data(timeIndex,1) < str2double(start{channel}.Value)
+                    timeIndex = timeIndex + 1;
+                end
+
+                startIndex = timeIndex;
+
+                while data(timeIndex, 1) <= str2double(stop{channel}.Value) || timeIndex >= length(data)
+                    timeArray(timeIndex - startIndex + 1) = data(timeIndex,1);
+                    timeIndex = timeIndex + 1;
+                end
+
+                endIndex = timeIndex;
+
+                for timeIndex = startIndex:endIndex - 1
+                    yData(timeIndex - startIndex + 1) = data(timeIndex, channel);
+                end
             end