Maps are usually drawn in the directions of up north, down south, left west and right east, so the directions on the map are up north, down south, left west and right east.

Basic elements: scale, legend, lighthouse.

Scale: indicates the extent to which the distance on the map and the distance on the site are reduced. ; Legend: the language of the map, including various symbols and their text descriptions, place names and numbers. ; The pointer indicates the direction on the map.

Map elements

Graphic element: it is the content expressed by the map according to the requirements of drawing. Including notes and geoscience foundation.

Mathematical elements: the elements used to determine the spatial correlation position of geoscience elements and play the role of "skeleton" of map content.

Auxiliary elements: explain the status of map compilation and the contents that must be provided for the convenience of map application.

In the form of maps, statistical charts, profiles, photos, words, etc. The theme map is supplemented in content and form. It can be arranged in an appropriate position on the main map as required.

We usually draw the floor plan in the following order: draw the axis-draw the column-draw the window-draw the wall line-draw the stairs-draw the bathroom-draw the porch-draw the furniture-draw the floor-draw the environment-draw the line.

A plan is a kind of map. You can use water level instead of horizon. On this premise, the ground scenery in the survey area can be projected onto the plane along the vertical line, and the similar figure formed by shrinking according to the specified symbol and scale is called the plan.