[OpenLayers-Users] no scale control if only resolutions in map?

[Richard Duivenvoorde]

Hi List,
I'm running mapserver map from geotiffs.

After some fiddling with scales, I ended up with a mapdefinition with
resolutions:

map = new OpenLayers.Map('map',  {
                'projection':'EPSG:28992',
                'units':'m',
                'maxExtent':newOpenLayers.Bounds(0,300000,300000,600000),
                'resolutions':[1, 2.5, 5, 10, 256, 512]
		} );

But now the scale control isn't showing up anymore....

If I look in: Scale.js I see:

  updateScale: function() {
         var scale = this.map.getScale();
         if (!scale)
             return;

So apparently there is no relation between resolutions and scales (or
calculating the one from the other )?

Question: can I show a scale-control with only resolutions defined? Or 
should I calculate the scales from resolutions?

Grtz,
Richard