2 RS - Bearing with rubber seal on both sides. RS provides a better seal but more rolling friction than 2Z. RS - Bearing with rubber seal on one side, one side open. 2 Z / ZZ - Bearing with a metal seal on both sides. Z - Bearing with a metal seal on one side, one side open.
How to calculate XY coordinates of the points in ArcGIS
- Before starting, you need to have defined the respective reference system.
- From ArcToolbox, go to Data Management Tools> Features> Add XY Coordinates.
- In the popup window select the points layer (shapefile), then accept.
- Open the attribute table of the point layer to display calculated fields.
It is given as geographical coordinates. The location is found along the line of latitude 10°N and along the line of longitude 70°W. When outlining the coordinates of a location, the line of latitude is always given first followed by the line of longitude.
These are usually drawn and then each line is annotated with bearing and distance. An example of bearing and distance might be N 66° 0′ 0″ E 1245.01′. This can be read more descriptively as North 66 degrees 0 minutes and 0 seconds for a distance of 1245.01 feet.
Each degree of latitude is approximately 69 miles (111 kilometers) apart. At north and south poles, the distance is 69.407 miles (111.699 kilometers).
What is the difference between latitude/longitude and Easting/Northing? Latitude/longitude, Easting/Northing, X/Y are ways we uniquely identify a position on Earth and are also called coordinates. The Longitude values range between -180 to +180°. Latitude values range between +90° to - 90°.
The line of latitude is read as 41 degrees (41°), 24 minutes (24′), 12.2 seconds (12.2”) north. The line of longitude is read as 2 degrees (2°), 10 minutes (10′), 26.5 seconds (12.2”) east. The line of latitude is read as 41 degrees (41), 24.2028 minutes (24.2028) north.
A coordinate grid has two perpendicular lines, or axes, labeled like number lines. The horizontal axis is called the x-axis. The vertical axis is called the y-axis. The y-coordinate is 5. To locate (2,5), move 2 units to the right on the x-axis and 5 units up on the y-axis.
What is the difference between latitude/longitude and Easting/Northing? Latitude/longitude, Easting/Northing, X/Y are ways we uniquely identify a position on Earth and are also called coordinates. The Longitude values range between -180 to +180°. Latitude values range between +90° to - 90°.
Decimal degrees (DD) express latitude and longitude geographic coordinates as decimal fractions and are used in many geographic information systems (GIS), web mapping applications such as OpenStreetMap, and GPS devices. Decimal degrees are an alternative to using degrees, minutes, and seconds (DMS).
Latitude designates North and South of the Equator. Longitude designates East and West of the Prime Meridian. A negative latitude means South of the Equator, and a negative longitude means West of the Prime Meridian.
Most GPS devices provide coordinates in the Degrees, Minutes and Seconds (DMS) format, or most commonly the Decimal Degrees (DD) format. The popular Google Maps provides their coordinates in both DMS and DD formats.
Using the National Grid
These grid lines help you to pinpoint an exact location anywhere on the map. The vertical lines are called 'eastings', as they increase in value as you travel east on the map. The horizontal lines are called 'northings' as they increase in value as you travel north on the map.Assign the values of the coordinates to x, y and z. Assume the value 6371 km to the variable R, which is the approximate radius of earth. This value is the scientifically derived value for radius of the earth. Calculate latitude and longitude using the formula: latitude = asin (z/R) and longitude = atan2 (y,x).
