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A large local angle of two points for two points

Application backgroundIn the measurement of physical, the azimuth of two points is often used, and the spherical coordinates of two points are known. Calculation of the earth as a sphere.Key TechnologyThrough two points of the earth's latitude and longitude coordinates, the calculation of the two po...

Reduce SRTM3 data point density

Application backgroundDownloaded from the website SRTM3 data point density is too large and bring inconvenience to use and program objective is reduced density, reduces the resolution. By removing the points adjacent to, its resolution decreased, but still maintained the format of the original dot m...

Converting column data into a row format

Application backgroundSRTM3 data or other file formats, such as text files are downloaded from the Internet, such as text files, which are used in order to be converted into a format that will be used for the purpose of a column.Key TechnologyInput file for Input.dat. procedures for covert Covert_ma...

Geodetic coordinate transformation to spherical coordinates

Application backgroundIn physical measurement, the geodetic coordinate system is converted to spherical coordinate system. The geodetic coordinate system is based on the coordinates of an ellipsoid, first converted into the center of the earth's Descartes coordinate system, and then converted to the...

According to ellipsoidal geodetic coordinate seeking normal gravity

Application backgroundIn the measurement of the physical force, the gravity anomaly is calculated, and the gravity of the calculated points and the normal gravity of the measuring points are needed. When normal gravity is calculated, it is required to calculate the geodetic coordinates, i.e., longit...


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