Instruction to draw gridded maps

Preliminary remark  -  What is GridMaps capable to do?

GridMaps is an elementary program for the graphical presentation of different gridded maps. It is only assumed that you have some basic knowledge of cartography which is available in this help-project as well as some experience in Windows-applications.

In the following you will get a short survey of the essential functions of GridMaps.

Principles

As a basic principle you start with a new empty map window.

You go on with selecting a projection in the menu »Projection« or clicking one of the corresponding buttons of the toolbar. After selecting the projection it will be drawn in the empty map window by mouse click at »draw« in menu »Map« or by clicking the draw-button of the toolbar.

A map can not be printed until it is displayed on the screen (cp. menu »Map«).

You always can display several gridded maps at the same time. To compare the different maps you are able to arrange the map windows by using the functions arrange map windows so they overlap, arrange map windows next to each other, etc. in menu »Window«.

To retrieve the projection data of the current map in the active map window (e.g. radius of the sphere and scale (for later print output), location of projection axis, potential standard parallels, etc.) you need to select one of the menu items projection infos or projection list in menu »Tools«.

Please select geogr. co-ordinates in menu »Tools« to display the geographic co-ordinates (at current cursor position) for the map in the active map window (if procurable).

To visualise the local map distortion you need to chose »Tissot Indicatrix« in the menus »View« or »Tools« or click the button which shows the ellipse.

Variations in presentation

The program allows you to vary the illustrations. This means variations based on the diverse projection data (see menu »Projection Data«) and/or variations concerning the appearance of the map.

Here are several possible variations:
  
See also
  
 The control system of GridMaps The control system of GridMaps
  
To the beginning of the chapter
  
 To the beginning of the chapter Working with GridMaps