IPhone Core-plot: Chart Zoom In Decrease, Y-axis More, Y-axis Less

Question

Now I am using Core-plot to develop iPhone diagrams. But he has some kind of demand that I cannot achieve.

Now I am using CorePlot 0.4 , AAPLot sample code for development

Please see the following image, then you will find out what my problem is. Thank you so much.

I really need help solving this problem, thanks

I need my result like this application

Answer 1

Here I see a few questions:

• Y axis scale: try the CPTAxisLabelingPolicyAutomatic labeling CPTAxisLabelingPolicyAutomatic on the y axis. If this does not give you enough control, use a different labeling policy and use the space delegate to adjust the labeling options as you increase and decrease size.

• Disappearing x axis: make it a floating axis. For instance,

   x.axisConstraints = [CPTConstraints constraintWithLowerOffset:0.0]; 

• Maximum level of scaling: use the properties of the globalXRange and globalYRange . If you need more control, you can use the delegate space.

• Scroll Bars: This is not directly supported. You can use the space delegate to update the position of the scroll bar.