Hi.
In this case, you’ll get a rough idea that the touchscreen is more precise.
For example, if you touch right the middle of the screen, the coordinates should be quite close to half the maximum values.
When you touch the corners, you should get values quite close to the maximum and minimum limits.
 
If you run the calibration sketch correctly, the touchscreen should be well calibrated, but you’ll only notice that with more certainty when you start testing the other projects.
 
Regards,
Sara

Hi Sara
From your replay could you clarify my question from the below data:-
Given the CYD Board resolution is 320 x 240
Thus :-
The X coordinates  for the display width are 0 to 320 and Y for the height are 0 to 240 is this correct?
Following your suggestion with the USB plug on the LHS of the board my results are:-
Top Left  = X236  and Y0
Bottom Left = X0 and Y0
Centre = X=119 and Y 161
Top Right  = X236  and 315
Bottom Right= X0 and Y314
My other question is, if my understanding of the width and height coordinates are correct why is it for example, the centre coordinates  X=119 and Y 161 are not the other way round as “X” 320/2 =160 and “Y240/2 =120
Not withstanding the above question my results data  look good to me.
I appreciate that the real test will be confirmed as I work through the book.
Best regards

Hi.
I recommend following the next examples in the eBook. That way, you can better understand if the calibration is correct.
 
Regards,
Sara

I am working through your examples in the next chapter with my coordinates and with the eye / markers I can’t see any difference from yours. I am not surprised as my data is very close to yours, So I am happy in that respect.

That’s great!
I’m glad to hear it.
Can I mark this issue as resolved?
Later, if you have further questions, you can open a new question in our forum.
 
REgards,
Sara