In the top view of the drawing, a data target line is represented by a target point symbol on the border of the part, and in the front view by a phantom line, datum target C1. A1, A2, and A3 are data target regions, B1, B2 are data target points, and C1 is a data target line. Note that only two views are shown here for clarity; usually more are required to fully show the relationship between all the data targets.
Data target areas are used to identify specific parts of the assembly that will receive data when the CAD file is loaded into the machine. They can also be used to identify specific features on the part that will serve as reference points during computer-aided manufacturing (CAM) processes. Data target areas should not be confused with sheet metal stamping dies, which also use the term "target area". Stamping dies have distinct cutting elements for each portion of the overall shape, while data targets are simply designated regions on the part where certain data will be placed or left during an editing operation.
To create a data target area, start with any selection tool and click anywhere within the drawing window. The first appearance of this click is used to define the beginning and ending points of the data target region. These starting and ending points can either be manually entered coordinates, or automatically generated by using the Intersect command.
After you enter starting and ending points, you must specify what type of data target you are creating.
A data target is a point, line, or restricted zone on a target with which machines and devices for processing, measuring, and inspecting come into contact to establish a datum. Data targets can be physical objects such as pins on a chart, or they can be magnetic tracks on tape. Data targets are used in coordinate measurement equipment for capturing the geometry of an object. The technology behind data targets is similar to that behind laser pointers, which also emit a spot that can serve as a visible guide for marking locations on an object.
Data targets consist of two parts: one or more receptors and a pattern of receptors. The receptors are the spots where measurements are taken from the object being scanned. For example, when scanning an object's surface with a laser scanner, the laser beam would hit the surface and be reflected back to the scanner. The scanner would read the position of each receptor on its data target and calculate the geometry of the surface based on these readings. Laser scanners usually have several data targets built in, so they can measure surfaces that other scanning methods cannot reach easily or at all.
Data targets can also be found in non-coordinate measurement equipment. These include gages, micrometers, dial indicators, and universal joints. They use sensors to detect the presence of receptors on the data target and then take measurements based on the position of these receptors.
A data point is a plane, a straight line, or a point used as a reference for processing a material or measuring the dimensions of a target. The word "point" is used to describe the ending of a measurement scale.
Data points are used in statistical analysis to determine the nature of a relationship between two variables. For example, if we were to examine the correlation between height and weight for a large group of people, there would be an average height and an average weight for that group. We could then calculate the correlation between height and weight for this group of individuals. This shows how useful data points are in statistics, since it allows us to see relationships that would otherwise be impossible to detect.
Data points are also used in regression analysis. In this case, we are trying to find out the effect one variable has on another. We do this by looking at different combinations of the variables and seeing which set results in a pattern. For example, if we were doing research on the effects that age has on the length of someone's fingers, we might measure the length of each person's finger and their age. Then, we could look at the correlation between these two variables to see if there is any pattern.
The bottom half is reserved for a letter and a digit. The letter denotes a data feature, while the digit denotes a data target number. The upper part of the page is reserved for extra information, such as the dimensions of the data target region.
Data targets are used to summarize or condense large amounts of information into a more manageable size. For example, a data target might be used to summarize sales figures by month instead of keeping detailed records of each transaction.
Data targets can also be used when you have too much information to fit on one page. For example, an employee list with detailed information about each person could take up a full page of paper. However, since only their names and email addresses need to be printed, a data target could be used instead. The printer would print only the name and email address of each employee on separate pages.
When printing multiple copies of documents with data targets, make sure that each copy contains some form of identification. This will help you locate the correct data target if any problems arise during production.
Data targets play an important role in report writing and document processing. However, they can also appear in other contexts where summary information is needed. For example, data targets are used in scientific experiments to reduce the amount of experimental detail required for a given study.