I have a Chinese within the scope of latitude and longitude coordinates of the data and then converted to Beijing 54 coordinate system first gaussian g Lv Ge projection based on the x, y coordinates in the coordinate of northwest to southeast direction, 1000 meters to see four points again according to the lambert projection transformation calculation of before and after the southeast of the northwest after projection error of the four points of difference to one of the biggest for xmax this is known as the length of the deformation error is that we want to output as a result, by adjusting the parameters to minimize this value, now need to such a program can directly import file to calculate the error, in the form of

CodePudding user response:

If only to calculate the length deformation error, the calculation steps have been described clearly, don't know what you need is?