SuperEdit ’s composite document viewer supports a number of raster formats (see Appendix ) including full-color pictures, e.g. photographs. Similarly to monochrome scanned images, color pictures may be equally well assigned the scale and other parameters that define the image position in the world coordinates system.

Click the Open button on the Main toolbar. For File Type choose TIFF and open the photo.tif file in the DOC subdirectory. Click the Image Properties button on the Main toolbar and inspect the parameters in the Raster Image Properties dialog, as in the figure below.

The Effective Image Extents of the photograph in the SuperEdit drawing window result from the Scale ( 1:300 ), Resolution ( 110x110 dpi ), Units ( mm ) and the Insertion Point ( 0.0, 0.0 mm ). Please try to change those parameters in the Raster Image Properties dialog, close it and, after the regeneration ends, check how they affect the extents of the image on the graphics screen.

The color image can be moved, i.e. its origin changed, interactively on the graphics screen. The origin is by default defined in the lower, left corner of raster frame. Click the Move button on the Raster toolbar. Notice the default origin symbol, drawn in gray color, placed exactly in the lower left corner of the raster frame. You may click the Zoom Out button on the Main toolbar to look at the whole operation from greater distance. A new origin position, drawn in yellow color, moves under the cursor. Click at a point on the image for which you want to define new coordinates, leaving the yellow Base point there. Now a new destination position drawn in red color moves under the cursor, so you can drag the whole raster frame. Click where that point should be moved to on the screen, leaving the red Target point there. Use the OTM Accept option to move and regenerate the image at the new position. To move it back, click the Undo button on the Main toolbar.

You may enter the coordinates numerically. Click the Move button again. Instead of showing the base and target points with the cursor, type:

Tab 2500 Tab 6700 Enter - for base point

Tab 0 Tab 0 Enter - for target point

(First Tab moves your input to the X box, second Tab – to the Y box, while Enter accepts both entered values). The frame of the image is moved to the expected new position. As previously, choose the OTM Accept option to move and regenerate the image at the new position.