diff --git a/matlab/cycling_data_sensors.mat b/matlab/cycling_data_sensors.mat
new file mode 100644
index 0000000000000000000000000000000000000000..82941620e0adc1e3265302ee16728a1c1ab6d629
Binary files /dev/null and b/matlab/cycling_data_sensors.mat differ
diff --git a/matlab/manipulate_cycling_data.m b/matlab/manipulate_cycling_data.m
index 884c8c892d76683f57db8e24cae64ad6eb2be9c7..b62baae3694c6870518dfdcdc80ce75ed7344032 100644
--- a/matlab/manipulate_cycling_data.m
+++ b/matlab/manipulate_cycling_data.m
@@ -1,5 +1,5 @@
 
-%load('cycling_data')
+load('cycling_data')
 
 % %trying to figure out the unit of measure of the time stamps
 % %total_time=time_stamps(length(time_stamps))-time_stamps(1) ;
@@ -35,4 +35,17 @@ acc=acc(2:length(acc),:);
 gyr=gyr(2:length(gyr),:);
 gps=gps(2:length(gps),:);
 
-sum(acc(:,1)-gyr(:,1))
\ No newline at end of file
+%sum(acc(:,1)-gyr(:,1))
+
+
+% Input struct:
+% in_data.GNSS.pos_ned      GNSS-receiver position estimates in NED
+%                           coordinates [m]
+% in_data.GNSS.t            Time of GNSS measurements [s]
+% (in_data.GNSS.HDOP        GNSS Horizontal Dilution of Precision [-]) 
+% (in_data.GNSS.VDOP        GNSS Vertical Dilution of Precision [-]) 
+% in_data.IMU.acc           Accelerometer measurements [m/s^2]
+% in_data.IMU.gyro          Gyroscope measurements [rad/s]
+% in_data.IMU.t             Time of IMU measurements [s]
+
+