Common controls

Fixed level zoom is possible with: zoom control, double click on map, mouse scroll button and by drawing a rectangle around the area with hold down SHIFT button.
Panning can be made with: pan control, dragging with mouse and by positioning the red rectangle on Overview map.
The index map from the layers can be switched on and off to facilitate visual search and it’s visible till the fifth zoom level.

Settlements box

Settlement search is possible by introducing the actual settlement name (with diacritics) in the auto search drop down list. Validating the selection with Enter zooms on the selected settlement using maximum zoom level.

Map sheets box

After specifying a valid column and row number (current column and row are indicated in the footer) Zoom button centers on it with maximum zoom level. Download button download the original map sheet. Original legend, index map and title sheet can be also downloaded with corresponding buttons.

Coordinates box

Every zoom changes the top-left and bottom-right corners according to the visualized extents of the map. Switching the coordinate systems convert the coordinates. Changing the coordinate values and coordinate system doesn’t affect the zoom and pan.
Cell size specifies the raster resolution for download. It has to be an integer number between 5m (original scanning resolution) and 20m.
Based on cell size and map extent the image size is calculated. Maximum downloadable image size is 4000x4000 pixels. The download buttons launches the effective data preparation and download. Depending on image size the necessary time can be up to few minutes and the downloaded GeoTIFF file can exceed 100MB. Please consider that Google Earth has a maximum texture size value depending on your video capabilities which can affect the downloaded KMZ file to be displayed correctly.

Footer

Footer indicates the position of current mouse position showing the maps sheet row and colum number and coordinates in WGS84 (latitude and longitude in decimal degrees), Cassini-Soldner and Stereo70 projections (easting and northing), in both cases expressed in meters.

On every zoom operation the zoom level, resolution and scale on the footer is updated. The scale is indicated also with a visual scale bar in the bottom-right corner of the map area. Zoom level expresses the reduction percentage with respect to the original map sheets.

Header

The webpage also offers the possibility to visualize the original legend and the original map on Google Maps and links to the essay and to the main page of project by using the corresponding buttons on header.