Update visible area

[LemonParty]

How to enable graph to automatically wide the visible area when new points are added? I need all points to be visible in graph.

[wp]

Don't change any settings related to axis scaling. It is the default behaviour to expand the axes such that all values are visible.

[LemonParty]

Is it possible to revert axis scaling? Because I need this function.

[wp]

"Revert" axis scaling? Do you mean to go back to a previous scaling (--> probably TChartExtentHistory, see https://wiki.lazarus.freepascal.org/TAChart_Tutorial:_ColorMapSeries,_Zooming#Zoom_history)? Or do you mean to "invert" the direction of the axis (--> property Axis.Inverted)?

[LemonParty]

No, I don't want to go back to previous scaling. I want to remove all scaling done by user so graph becomes autoexpandable again.

[wp]

There are two settings for axis scaling: Chart.Extent and Chart.*Axis.Range: Set their Use* values to false. I think there are also some series types with their own scaling limits (FunctionSeries, ColorMapSeries, maybe more) having similar Range properties.

[LemonParty]

Code: Pascal  [Select][+][-]

1. Chart.Extent.UseXMin:= False;
2. Chart.Extent.UseYMin:= False;
3. Chart.Extent.UseXMax:= False;
4. Chart.Extent.UseYMax:= False;
5.  

This work. Thank you for help.