To determine the geometric type are member of comparing trees of equal height and different geometrical shapes inscribed in a semicircle of diameter equal to the maximum width. It shows the semi-circle at the crown and builds a rectangle surrounding it. The type of membership, due to the true solar noon, is listed in the following assumptions: 1)TIPE HEMISPHERICAL Represents the maximum distance of the shadow line carried by a shaft to the Winter solstice, if the tree was hemispherical shape. 2)TIPE TAPER Represents the minimum distance of the shadow line carried by a shaft to the Summer solstice, if the tree was conical in shape. 3)CYLINDER TYPE Represents the maximum absolute distance of the shadow line from a tree to reach the Winter Solstice. 4)TYPE TRUNCATED CONE Represented by trees whose shape casts shadow values range included between the first two types. The assumptions listed above decay to vary the latitude and altitude of the place: as defined trees of cylindrical shape, although belonging to the same botanical family, does not necessarily correspond to the same type of geometric membership. This varies with the values ??of latitude and altitude, and with them the highest point of the projection of the incident beam. To determine what type you have to make use of digital photos and compare them to the trees of the same height and the same geographic area, regardless of the botanical family to which they belong.

1) Pinus Pinea    2) Cupressus    3) Acacia    4) Pinus Halepensis

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The different types of geometric cassificano above the trees based on the amount of shadow range on the horizontal plane during daylight hours, not taking into account the actual pencentuale of the shadow expressed through the gradation of light and dark. The quality of the shadow is evaluated by the ability of a tree to cast a dark shadow, smooth and sharp edge, or on the contrary, light gray, non-uniform and non-defined contours. It may happen that trees of the same project type, at different times of day, and different shades of varying intensity. The images below show the comparison of three trees belonging to the same botanical family. Diadora or Himalayan cedar, cylindrical, cedar Atlantis, conical in shape and the cedar of Lebanon, of rectangular shape. It should be noted that the second-order branches of the cedar of Lebanon have a structure in stages and bring greater shade during the middle of the day, while in the last hours in the morning or early afternoon light rays are partially obscured. The following example clarifies the above:

	Deodar cedar or Himalaya Geographic coordinates: Lat =  38° 50' 11'',76 Long. = 16° 20' 52'',20 Alt. = 410 mt Type: conical. gradient shading:  100% notes: The second-order branches are pendulous and do not leave the light rays pass through even when the sun is low on the horizon, the shadow flow is uniform, dark-edged sharp.
	Atlas cedar Geographic coordinates: Lat =  38° 50' 11'',76 Long. = 16° 20' 52'',20 Alt. = 410 mt Type: cylindrical gradient shading:  80% notes: The second-order branches are straight and leave attraversaere partially light rays even when the sun is above the horizon, the shadow scope is clear, uniform contours are not well defined.
	Cedar of Lebanon Geographic coordinates: Lat =  38° 50' 11'',76 Long. = 16° 20' 52'',20 Alt. = 410 mt Type: rectangular gradient shading:  50%-80% notes: The branches of the first order are structured in stages and crossed through in alternating bands of light rays coming from the sun in the last hours in the morning or early afternoon hours, the drop shadow is clear, non-uniform with alternating zones contours are not well defined.