what is 'dm'? python tello send 'height?' problem

[tt503177177]

hi all! could someone please help with this problem？

if I type 'height?'
tello will return 0dm(before takeoff)

if takeoff i sent 'height?'
i will return 1dm 2dm 3dm.........
what is 'dm'?
is it mean 'Relative height'?
and how let it print 'now at 1m' 'now at 2m'.....?

[dji-dev]

Agent comment from Ho.Yan in Zendesk ticket #33533:

Dear Developer,
Thank you for contacting DJI.

This question you can contact RYZE Tello's technical support：
support.cn@ryzerobotics.com

Warm Regards,
DJI Developer Support

[guowanhui]

Tello takes take-off point as 0 altitude发自我的华为平板电脑-------- 原始邮件 --------发件人： tt503177177 <notifications@github.com>日期： 2020年4月14日周二 下午2:54收件人： dji-sdk/Tello-Python <Tello-Python@noreply.github.com>抄送： Subscribed <subscribed@noreply.github.com>主 题： [dji-sdk/Tello-Python] what is 'dm'? python tello send 'height?' problem (#65) hi all! could someone please help with this problem？ if I type 'height?' tello will return 0dm(before takeoff) if takeoff i sent 'height?' i will return 1dm 2dm 3dm......... what is 'dm'? is it mean 'Relative height'? and how let it print 'now at 1m' 'now at 2m'.....? —You are receiving this because you are subscribed to this thread.Reply to this email directly, view it on GitHub, or unsubscribe.

[RobertoMinelli]

Dear @tt503177177,

Tello returns relative height from takeoff point (which corresponds to 0dm).
dm stands for decimeter — a unit of length in the metric system, equal to one tenth of a metre.

Cheers,
Roberto