Karte

Optimize and Repair

Choose this command to optimize (reduce) the size of the map file and repair damaged objects. With edit operations such as deleting objects, empty space is created in the map file. This function removes this empty space and reduces the size of the map file.

When OCAD encounters damaged objects it tries to repair them. If this is not possible, they are deleted.

After the optimization the Optimize Result dialog box is displayed.

Spurious objects deleted

Spurious objects are objects which are not visible. These may be text objects with no text and no line, or line objects with only one point, or area objects with only 2 points.

Set Scale and Coordinate System

Read more about this topic: Set Scale and Coordinate System

Change Scale

Choose this command to change the scale of the map. The map is enlarged/reduced according to the new scale. The Change Scale dialog box is displayed, where the new scale can be entered.

Current scale

This line shows the current scale of the map. Choose Scale and Coordinate System from the Map menu to set the current scale.

Setting the current scale does not enlarge or reduce the map. It only changes a number in the map file.

New scale

Enter here the desired new scale of the map. You may choose one of the predefined scales or enter the scale on the keyboard.

Enlarge/reduce symbols

Check this box to enlarge/reduce the symbols with the same factor as the map. When the box is checked, the map is enlarged/reduced like a photographic enlargement. When this box is not checked, the map is enlarged/reduced, but the symbols are kept in the same dimension.

Create Map Grid

This command is activated if the map contains at least one object and if a line symbol is selected in the symbol box.

Choose this command to create grid lines on the map. (For instance, it can be used to draw Magnetic North lines.) The Grid Lines dialog box is displayed. The selected line symbol is used for the grid lines. The grid lines created are normal line objects and cover the entire map (the area in which you have drawn objects). Use the cut tool to make the lines shorter or to cut a gap out of the lines.

Initially all parameters are set to the current grid settings. Press the grid button to see the current grid.

Unlike the other commands in the Map menu, you can Undo the grid lines you have created.

Horizontal/Vertical offset: One grid line will go through the point defined by the horizontal and vertical offset.

Horizontal/Vertical distance: Enter the distances between the grid lines (center to center) here.

Angle

Enter the angle of the grid lines here. For a positive angle, the grid lines are rotated counterclockwise.

Create horizontal lines: Check this option to create the horizontal grid lines.

Create vertical lines: Check this option to create the vertical grid lines.

Create WGS Grid

Read more about this topic here: Create WGS84 Grid

Transform

Read more about this topic here: Map Transform