Spooky Graphed Data?

53 次查看（过去 30 天）
Guanting
Guanting 2025-10-31，13:27
编辑： dpb 2025-11-4，14:16
Data tip doesn't match Yaxis or actual data. Actual data is 1073741824.
Can anyone explain this?

请先登录，再回答此问题。

回答（2 个）

dpb
dpb 2025-10-31，13:52
Longstanding behavior -- the datatip values are rounded to some (as far as I know an unspecified) number of significant digits; probably for cleanliness of display considerations.
Fangjun Jiang
Fangjun Jiang 2025-10-31，13:57
编辑：Fangjun Jiang 2025-10-31，14:06
Ran in:
a=plot(1073741820:1073741829);
datatip(a);
c=a.DataTipTemplate;
c.DataTipRows(2).Format
ans = 'auto'
c.DataTipRows(2).Format='%d';
  5 个评论
显示 3更早的评论
Fangjun Jiang
Fangjun Jiang 2025-11-2，16:24
Thank you @dpb for digging it up. I tried and saw the "auto" format and then searched for the other format. That is all I did.
dpb
dpb 2025-11-2，17:04
编辑：dpb about 13 hours 前
The real contribution was yours to make me curious about whether the interactive callback used the same ptopertiy and then that led to the discovery it is an undocumented and hidden(*) property of every line object.
(*) The actual property .DataTipRows is hidden such that even <Yair Altman's near magical GETUNDOCUMENTED function> doesn't find it which; having never seen it before, had led me to the erroneeous conclusion long ago that it was implemented as an internal callback from the axes and the two weren't really connected at all. Certainly the documentation doesn't provide any hint.
>> HL=plot(rand(10,1); % generate line handle to poke at...
>> U=getundocumented(HL)
U =
struct with fields:
ALimInclude: on
ALimIncludeMode: 'auto'
ALimInclude_I: on
AlignVertexCentersMode: 'auto'
...
CLimInclude_I: on
ChildrenMode: 'auto'
Children_I: [0×0 GraphicsPlaceholder]
ClippingMode: 'auto'
Clipping_I: on
Color_I: [0 0.447 0.741]
Copyable: 1
CreateFcnMode: 'auto'
CreateFcn_I: ''
CreateFcn_IS: '???'
DataTipTemplate_IS: [0×0 GraphicsPlaceholder]
DatetimeTickFormat: ''
DefaultPropMap_Internal: [0×0 struct]
...
>>
reveals only an empty graphics object placeholder; no hint that the actual set of properties are extant and addressable if one does stumble onto the fact they do belong to the lines on the axes.

请先登录，再进行评论。

类别

在 Help Center 和 File Exchange 中查找有关 Environment and Settings 的更多信息

标签

产品


版本

R2024b

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by