What is a grid scale factor?

Published by %s
2020-12-29

What is a grid scale factor?

The grid scale factor converts distances between the geodetic distances on the ellipsoid surface and the grid plane of the projection. This factor is computed from the x,y location of the point and the properties of the projection surface.

How do you do scale factor in surveying?

In GPS, the Scale Factor is applied by dividing the distance between the coordinate and a base point by the Scale Factor. The coordinate is then set by starting from the base point and moving in the direction to the coordinate for the adjusted distance.

How do you scale from grid to ground?

To convert from grid to ground:

  1. Go to the Survey tab and click the Local Site Settings command.
  2. Enter an estimated centroid position for your project.
  3. Check the box for “Use ground coordinates”
  4. Allow TBC to “Compute ground scale factor from the project location”
  5. Click OK.

What does it mean if your scale factor is greater than 1?

The scale factor in the dilation of a mathematical object determines how much larger or smaller the image will be (compared to the original object). When the absolute value of the scale factor is greater than one, an expansion occurs. When the absolute value of the scale factor is less than one, a compression occurs.

What is the difference between ground and grid coordinates?

Your surveyor is asking if you want in ground or grid, because ground is what is used in the (real world) if you were in the field measure with a tape . Grid is a measurement from a projection which will have different scale factors applied to your measurements, depending on where you are with in the projection.

Is UTM grid or ground?

The UTM coordinate system is a universally used plane coordinate system (except for polar regions). UTM zones are “flattened” using the Transverse Mercator projection, and a rectangular grid network of straight horizontal and vertical lines is superimposed on each zone.

What is a dilation of 1 2?

Dilation Scale Factor ½: If the scale factor is 1/2, then every coordinate point of the original triangle is multiplied by the scale factor 1/2.

What does a scale factor of greater than 1 do to a shape?

If the scale factor is more than 1 (k > 1), the image is enlarged. If the scale factor is less than 1 (0< k <1), the image is contracted. If the scale factor is 1 (k = 1), the image remains the same.