The horizontal line refers to the line that looks horizontally at the junction of the sky and the water surfacePlumb lineA straight line that is perpendicular to, or generally refers to, a straight line on the horizontal plane and a straight line parallel to the horizontal plane.In addition, it can also refer to the height reached by a certain aspect.
The horizontal line is a kind ofParallel line of projection planeThe straight line parallel to the H plane and inclined to the V and W planes is called the horizontal line, as shown in Figure 1. Its projection characteristics are:
1. The horizontal projection of the horizontal line reflects the real length of the line, that is, cd=CD;
2. The included angle between the horizontal projection cd of the horizontal line and the OX axis reflects the inclination β of the line to the V plane, and the included angle with the OY axis reflects the inclination γ of the line to the W plane;
3. The front projection of the horizontal line is parallel to the OX axis, that is, c'd '‖ OX, and the side projection of the horizontal line is parallel to OYwShaft, i.e. c "d" ‖ OYw。[1]
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Horizontal line in measurement
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In surveying, the horizontal line is a kind of local surveying datum direction line, that is, a straight line located in the horizontal plane, that is, a straight line orthogonal to the plumb line.
Basic interpretation
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meaning
1. Horizontally, the line between the sky and the water surface;
2. andPlumb lineA straight line perpendicular to each other;
3. Generally refers to the straight line on the horizontal plane and the straight line parallel to the horizontal plane;
4 refers to the height reached in some aspect;
5. Horizontal line in the page:
Color sets the color;
Size the width of the horizontal line;
The length of the width horizontal line, which can be expressed as a percentage of the screen width or pixel value;
Align The horizontal line can be aligned by LEFT RIGHT CENTER;
The Noshade segment has no shadow attribute and is a solid segment.
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Where Width specifies the length of the line, which can also be a percentage;Color means color;Size is the thickness;Align specifies the line position. Left, Right, Center, and Noshade indicate whether there is a three-dimensional effect.
If Width=1 Size=550, the display effect is "vertical line".
