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BlomDESKTOP ViewerTM User Guide v3.5 r1.0a
Figure 56: Selection of Range of Zoom Levels
On the slide bar you can select the minimum and maximum zoom levels required to display the
selected overlay.
Note: This option does not apply to the BlomSTREET™ overlays, so the option will not appear.
Baselayer zoom level cannot be limited either.
6.7.1 A note on zoom levels
BlomDESKTOP Viewer™ manages different zoom levels as images with different resolution, in fixed
intervals, to speed up rendering time. The table below shows some of the bigger resolution zoom
levels for Spherical Mercator data.
Note that:
•
The resolution of this projection only matches real world resolution in the equator.
•
It varies with the latitude.
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