Date Scale for X-Axis

[mishani99]

Dear all,

Using Qwt6.0.1, I want to construct a date axis with complete format, i.e showing the beginning of each year as major ticks, months as mid ticks and days as minor tick.
I know that i should write new QwtScaleDraw and QwtScaleDiv classes, but i really dont know how! Any one can help me please?

[Uwe]

As long as you know your scales you can set the ticks manually using QwtPlot::setAxisScaleDiv.
More difficult is the situation, when you want to use autoscaling, zooming, panning etc. Then you need to derive a new type of QwtScaleEngine.

Uwe

[mishani99]

Can I set different labels for different ticks? f.e. year for major ticks ("yyyy"), month name for medium ticks (f.e 'Aug') & day number ("dd") for minor ticks?

[Uwe]

Only major ticks can have labels,

Uwe