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I want to place the line or spline chart over other canvas that rendered by my routine.
I need to heavily customize chart stuff so that leave only the line:
- Remove x-axis, y-axis, chart background.
- Set line with to about 2 pixels.
- Remove or keep the dot represent a point, customer tooltip.
- Can show multiple line

How can I do this?
Thanks.

Thank you Tripp,
It works.

For other one that may need a working example to view result, here it is:
http://jsfiddle.net/khoaminhbui/VxscF/

This functionality does not exist in YUI Charts. You may be able to hack it for your use case by breaking the changing your dataProvider to map values over 5 to different keys. This would force the chart to create two different series for the chart.

Thanks,
Tripp

You should be able to update the axis.styles.majorUnit.count property to 10 and get 10 ticks but it looks like there is a bug that won't allow you to change this property when the axis' position is set to "none". The workaround will be to set the values axis' position to left and hide all of its elements.

This will not work due to bug:


Here is the workaround:


Thanks,
Tripp

I customize the chat a little bit: make category to be numeric type. Like this: http://jsfiddle.net/khoaminhbui/VxscF/

The problem is the major Unit is not exactly as set, but equal to the maximum category value.
For example, I set majorUnit to be 200, but the maximum category value is 190, then the last marker that has category 190 is drawn at the end of the chart.
My expectation is that the marker with category value 190 will be drawn 'near' the end of the chart.

Is this a bug or i need more setting?

Updated: I encounter the similar problem with value axis, although i specify the majorUnit.count = 10, Then:
- If the biggest value is 9, thing is ok, a unit has value 1, the axis labels are 0, 1, ..9.
- If the biggest value is 7, the problem arise, a unit value is scaled to be 7/9=0.7777777778. the axis labels are 0, 0.7777777778, 1.5555555556, 2.3333333333, 3.1111111111, 3.8888888889, 4.6666666667, 5.4444444444, 6.2222222222, 7.

Updated 2: However, if i specify the values to be less than zero to make the chart rendered bottom up, thing is ok. Even if the value in the range from 0 to -7 (Because 0 is biggest value).