garrettseepersad/geodetic-toolbox

Geodetic Toolbox

Angle Conversions

• deg2rad - Degrees to radians
• dms2deg - Degrees,minutes,seconds to degrees
• dms2rad - Degrees,minutes,seconds to radians
• rad2deg - Radians to degrees
• rad2dms - Radians to degrees,minutes,seconds
• rad2sec - Radians to seconds
• sec2rad - Seconds to radians

Coordinate Conversions

• ell2utm - Ellipsoidal (lat,long) to UTM (N,E) coordinates
• ell2xyz - Ellipsoidal (lat,long) to Cartesian (x,y,z) coodinates
• sph2xyz - Shperical (az,va,dist) to Cartesian (x,y,z) coordinates
• xyz2sph - Cartesian (x,y,z) to spherical (az,va,dist) coordinates
• xyz2ell - Cartesian (x,y,z) to ellipsoidal (lat,long,ht) coordinates
• xyz2ell2 - xyz2ell with Bowring height formula
• xyz2ell3 - xyz2ell using complete Bowring version
• ecef2lla -

Coordinate Transformations

• refell - Reference ellipsoid definition
• ellradii - Various radii of curvature
• cct2clg - Conventional terrestrial to local geodetic cov. matrix
• clg2cct - Local geodetic to conventional terrestrial cov. matrix
• ct2lg - Conventional terrestrial (ECEF) to local geodetic (NEU)
• dg2lg - Differences in Geodetic (lat,lon) to local geodetic (NEU)
• lg2ct - Local geodetic (NEU) to conventional terrestrial (ECEF)
• lg2dg - Local geodetic (NEU) to differences in geodetic (lat,lon)
• direct - Direct geodetic problem (X1,Y1,Z1 + Az,VA,Dist to X2,Y2,Z2)
• inverse - Inverse geodetic problem (X1,Y1,Z1 + X2,Y2,Z2 to Az,VA,Dist)
• simil - Similarity transformation (translation,rotation,scale change)

Date Conversions

• cal2jd - Calendar date to Julian date
• dates - Converts between different date formats
• doy2jd - Year and day of year to Julian date
• gps2jd - GPS week & seconds of week to Julian date
• jd2cal - Julian date to calendar date
• jd2dow - Julian date to day of week
• jd2doy - Julian date to year & day of year
• jd2gps - Julian date to GPS week & seconds of week
• jd2mjd - Julian date to Modified Julian date
• jd2yr - Julian date to year & decimal year
• mjd2jd - Modified Julian date to Julian date
• yr2jd - Year & decimal year to Julian date

Error Ellipses

• errell2 - Computes error ellipse semi-axes and azimuth
• errell3 - Computes error ellipsoid semi-axes, azimuths, inclinations
• plterrel - Plots error ellipse for covariance matrix

Miscellaneous

• findfixed - Finds fixed station based on 3D covariance matrix
• pltnet - Plots network of points with labels

Example Scripts

• DirInv - Simple partial GUI script for direct and inverse problems
• DirProb - Example of direct problem
• Dist3D - Example to compute incremental 3D distances between points.
• InvProb - Example of inverse problem
• PltNetEl - Example plot of network error ellipses
• ToUTM - Example of conversion from latitude,longitude to UTM

Limitations:

• No vector wise multiplication

Ideas:

• Could link multiple files to an import : https://www.reddit.com/r/learnpython/comments/5odyok/one_function_per_file/