How do I change datetime format in stackedplot on X-Axis?

2019 6 14
2 个回答
更新时间：2021 2 18
2 次查看（30 天）

2 个投票

Right now by default it's in 'hh:mm' I want it to be in 'hh:mm:ss' format with 1 minute interval.
Note: The image shown below is a "stackedplot" and not "plot".
Plot.png

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回答（2 个）

Adam Danz
Adam Danz 2021-2-18
Ran in:

1 个投票

Ran in:
In case anyone is still looking for this solution,
% Create stacked plot, set xdata as datetime values
% The XData can also be set using 'XVariable' for tables but needs to be datetime format.
sph = stackedplot(rand(50,5),'XData',datetime(2020,1,1)+minutes(linspace(0,480,50)));
% Get axis handles
ax = findobj(sph.NodeChildren, 'Type','Axes');
% Set datetime format. The first axis will be the bottom one.
xtickformat(ax(1),'HH:mm:ss')
dpb
dpb 2019-6-14

0 个投票

hAx=gca;
hAx.TickLabelFormat='hh:mm:ss';
You can set the XTick values as wanted but there will not possibly be room to label more than half-hour frequency if that when you add the other text--just not enough real estate to have that much text in such close proximity.

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Vraj Mistry
Vraj Mistry 2019-6-14
Hi dpb,
Thanks for your answer but it still gives me an error shown below:
Unrecognized property 'TickLabelFormat' for class 'matlab.graphics.chart.StackedLineChart'.
I think this would work fine if it was normal plot but as I mentioned it's a "stackedplot".
dpb
dpb 2019-6-14
My R2018b got trashed by a windows update and haven't gotten restored so was presuming there'd be duration or timeruler axis underneath.
From the online doc, looks like they've (again) hidden properties -- you can try the FileExchange https://www.mathworks.com/matlabcentral/fileexchange/32934-getundoc-get-undocumented-object-properties routine from Yair and see if you can go "handle diving" to find properties of interest to let you do what you're looking for. Bound to be there somewhere; it's just uncovering how they're buried and whether the object is or is not totally opaque to the user by TMW's design/implementation.
Vraj Mistry
Vraj Mistry 2019-6-14
Hi dpb,
I tried the above function by creating a stackedplot variable 'sp' and it gave me the results shown below. I don't think any of the available properties can be used for the solution. Thanks Again.
getundoc(sp)
ans =
struct with fields:
ApplicationData: [1×1 struct]
Axes: [1×1 Axes]
AxesPropertiesListener: [1×1 event.listener]
AxesVisibleCache: 1
BeingDeleted: 'off'
ChartDecorationInset: [0.0749 0.0432 1.1102e-16 4.4409e-16]
Copyable: 1
DataCursor: [1×1 matlab.graphics.chart.internal.stackedplot.StackedLineDataCursor]
DefaultPropMap_Internal: [0×0 struct]
Description: 'StackedLineChart'
DescriptionMode: 'manual'
DisplayLabelsHandle: [1×1 Text]
DisplayLabelsMode: 'manual'
DisplayVariablesMode: 'auto'
DisplayVariables_I_EC: {'Var1'}
ErrorCallback: ''
ErrorCallbackMode: 'auto'
GapBetweenAxes: 0.1000
HandleVisibilityMode: 'auto'
HitTest: 'on'
InnerVariableIndex: 0
InputType: 'table'
Internal: 0
LegendHandle: [1×1 Legend]
LinePropertiesListener: [1×1 event.listener]
LooseInset: [0.1300 0.1100 0.0950 0.0750]
MarkedCleanListener: [1×1 event.listener]
MaxInsetForSubplotCell: [0 0 0 0]
MaxNumAxes: 25
MaxVarIndex: 1
MessageHandle: [1×1 TextBox]
MinAxesHeight: 20
NodeChildren: [2×1 Graphics]
NodeParent: [1×1 ScribeLayer]
NumPlotsInAxes: 5
OuterPositionPixelsCache: [1 1 1.2653e+03 712.6667]
PanInteraction: [1×1 matlab.graphics.interaction.uiaxes.Pan]
ParentMode: 'manual'
Plots: {[1×5 Line]}
Selected: 'off'
SelectionHandle: [0×0 SelectionHandles]
Serializable: 'on'
SerializableApplicationData: [1×1 struct]
SerializableMode: 'auto'
SkipReupdate: 0
SubplotCellOuterPosition: [0 0 0 0]
Tag: []
TightInset: [0.0749 0.0432 1.1102e-16 4.4409e-16]
TransformForPrintFcn: ''
TransformForPrintFcnImplicitInvoke: 'on'
TransformForPrintFcnImplicitInvokeMode: 'auto'
TransformForPrintFcnMode: 'auto'
Type: 'stackedplot'
UnitsCache: 'normalized'
VariableIndex: 1
VisibleMode: 'auto'
XData_I_EC: [1×0 double]
XLabelHandle: [1×1 Text]
XLabelMode: 'auto'
XLimitsMode: 'auto'
XVariable_I_EC: []
YData_I_EC: []
ZoomInteraction: [1×1 matlab.graphics.interaction.uiaxes.ScrollZoom]
AutoListeners__: {[1×1 event.listener]}
Behavior: [1×1 struct]
dpb
dpb 2019-6-14
编辑：dpb 2019-6-16
getundoc(sp)
ans =
struct with fields:
ApplicationData: [1×1 struct]
Axes: [1×1 Axes]
MaxNumAxes: 25
MaxVarIndex: 1
MessageHandle: [1×1 TextBox]
MinAxesHeight: 20
NodeChildren: [2×1 Graphics]
NodeParent: [1×1 ScribeLayer]
NumPlotsInAxes: 5
...
Plots: {[1×5 Line]}
Selected: 'off'
...
Behavior: [1×1 struct]
Well, there's an Axes handle to start probing... don't give up so quickly!!
dpb
dpb 2019-6-15
Also, try setting the display format for the x-axis variable before plotting -- possibly the function will look at that in deciding the display format.

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