Created basic structure of function

correct_time_baseline.m

@@ -1,7 +1,42 @@
-function [outputArg1,outputArg2] = correct_time_baseline(inputArg1,inputArg2)
+function [dataOUT] = correct_time_baseline(dataIN)
 %CORRECT_TIME_BASELINE Summary of this function goes here
 %   Detailed explanation goes here
-outputArg1 = inputArg1;
-outputArg2 = inputArg2;
+
+%Create figure
+f = figure('Units','Normalized',...
+     'Position',[.3 .3 .4 .4],...
+     'NumberTitle','off',...
+     'Name','Choose Pretrigger');
+%input field
+inp = uicontrol('Style','Edit',...
+     'Units','Normalized',...
+     'Position',[.025 .025 .7 .05],...
+     'Tag','myedit');
+%"Done" button
+p = uicontrol('Style','PushButton',...
+     'Units','Normalized',...
+     'Position',[.75 .025 .225 .05],...
+     'String','Done',...
+     'CallBack','uiresume(gcbf)');
+%axes for plot
+ax = axes(f,'Units','Normalized',...
+     'Position',[.05 .125 .925 .85]);
+%plot current data in figure
+plot(ax,dataIN)
+axis tight
+%wait until button pressed
+uiwait(f)
+pretrigger = str2double(get(inp,'String'));
+
+%timeline CORRECTING
+data_size = size(dataIN);
+dataOUT = zeros(data_size);
+for n = 1:data_size(2)
+    column_mean = mean(dataIN(1:pretrigger,n));
+    dataOUT(:,n) = dataIN(:,n) - column_mean;
+end
+%plotting result
+plot(ax,dataOUT)
+axis tight
 end