Description: BL translated from latitude and longitude to the Gaussian plane rectangular coordinates XY (Gauss projection is counted), or converted from the XY BL (Gaussian inverse projection), generally require special computer software to complete, in the popular conversion software, there is a lack of common in the sense that the flexibility is poor, most still require a point to be a point, not done in batches, to the actual work to bring a lot of inconvenience. I found that using EXCEL can be very intuitive and easy to coordinate the translation work is completed, the software does not require any preparation, you only need to enter the appropriate formula in the corresponding cell in EXCEL can. The following 54 lines as an example, the specific method of calculation.
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