I have just started using data logging with the Education Edition of the EV3 software. It seems to work well until my program reads the same sensor it is logging.
As an example, my simple test program logs the gyro angle and motor current power, turns on the motor power, then, in a loop, reads and displays to the screen the gyro angle, until a certain number of motor rotations.
In this example, the motor power logs fine, but the gyro sensor angle logs a few zeros then does not log anything.
I have just seen that I am running the home edition of the firmware (V1.09H) on the brick. Could this be the problem?