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计算行星掩食
- 通过站台经纬度和恒星赤经赤纬，计算行星掩食的时间，获得适宜的观测时间(Through the platform of latitude and longitude and the longitude latitude star, planet eclipse calculation time, to obtain suitable observation time)
azimuth
- 将经纬度网格转化为极坐标，并根据某一点求方位角(The longitude and latitude grids are transformed into polar coordinates, and the azimuth angles are obtained according to a certain point)
Latitude and longitude calculation distance
- 已知经纬度计算两点之间的距离 并筛选出所有距离中的最短距离(use the longitude and latitude to calculate the distance between two points and find the shortest distance from all distances.)
IDW
- 根据经纬度，实现IDW内插的调用函数，具体参量已做说明，内附内查结果示样(According to the latitude and longitude, realize the function call of IDW interpolation, the specific parameters have been illustrated, containing the results found in the sample)
function
- 计算两点之间距离(可以是两个矩阵之间，单位要求为距离单位或者经纬度，spherical为计算经纬度为单位的两点之间距离)(calculate the distance between two points)
坐标转换
- gps经纬度转换到大地坐标，大地坐标转换到施工坐标(GPS conversion from latitude and longitude to geodetic coordinate and geodetic coordinate to construction coordinate)
googleearth
- 在matlab中把经纬度数据转化为googleearth可识别的kml文件。可在googleearth中显示航次站点数据等，另增了一个可以画三角网格的函数ge_trisurf.m(In MATLAB, the longitude and latitude data are transformed into googleearth recognizable KML files. The data of voyage sites can be displayed in googleearth.Add
TianCheng-master_chusai_qingyu
- 2018年甜橙金融杯大数据建模大赛初赛方案：通过追踪时间、设备、ip和经纬度等属性的变化来建模判断UID是否为黑产链 ## 代码说明： - gen_stat_feat.py 统计特征 - gen_w2v_feat.py word2vec特征 - lgb_train.py lgb训练模型 两份特征建模加权8:2比例融合即可0.792+，单独统计特征加UID列建模即可0.795。(The preliminary scheme of the 2018 Sweet
程序 (1)
- 数模2015A题程序设计，给定影子长度计算所在位置的经纬度。(MCM 2015A The program design of digital and analog question 2015A calculates the longitude and latitude of the position given the shadow length.)