Javascript 从CSV文件中提取x/y/z值

我正在研究夜空的真实恒星模型（使用BabylonJS），发现这个数据库包含最近恒星的所有位置：

唯一的问题是，这些x/y/z坐标被嵌入了许多其他数据中，我想知道是否有人能提出一种简单的方法来提取它们，这样我就可以得到一个干净的JavaScript数组[x，y，z]元素？

如下所示：

你可以在内环中选择你喜欢的

您可以预先计算[“StarID”、“X”、“Y”、“Z”].indexOf（header[j]）以保存处理

var csv=`StarID、HIP、HD、HR、Gliese、bayerflassteed、ProperName、RA、Dec、Distance、PMRA、PMDec、RV、Mag、AbsMag、Spectrum、ColorIndex、X、Y、Z、VX、VY、VZ
0,0,0,0.000004848,0,0,0,0，-26.73,4.85，G2V，0.656,0,0,0,0,0,0,0
1,1224700,6.079e-05,01.08901332282.485875706215，-5.20，-1.88,9.10,1.84501631012894,F5,0.482282.43485,0.00449,5.36884,4.9e-08，-7.12e-06，-2.574e-06
2,2224690，，，，，0.00025315，-19.49883745,45.662100456621181.21，-0.93,9.27,5.97222057420059，K3V，0.999,43.04329,0.00285，-15.24144，-7.1e-08,4.0112e-05，-1.94e-07
3,3224699,0.00033386,38.85928608355.871886120996,5.24，-2.91,6.61，-1.1464684004746，B9，-0.019277.11358,0.02422223.27753,3.148e-06,9.04e-06，-3.909e-06
4,4224707，0.00055878，-51.89354612129.032258064516,62.85,0.16,8.06,2.50650851253155，F0V，0.370,79.62896,0.01164，-101.53103,7.2e-08,3.9313e-05,6.1e-08
5,5224705,0.00066435，-40.59122440348.432055749129,2.53,9.07,8.55,0.839409483669963,G8III,0.902264.58918,0.04601，-226.71007,9.967e-06,4.275e-06,1.1633e-05
6,6，，，，，，0.00120942,03.94648893,53.1914893617021226.29，-12.84,12.31,8.6807892463184，M0V:，1.336,53.06535,0.0168,3.66089,2.09e-07,5.835e-05，-3.303e-06
7,7,20.03660216,56.369785794814，-208.12，-200.79,9.64,5.88476807747854,G0,0.740,52.95794,0.02084,19.31343,1.8821e-05，-5.6864e-05，-5.1547e-05
8,8224709,0.00181944,25.88647445193.423597678917,19.09，-5.66,9.05,2.61745271546971，M6e-M8.5e Tc，1.102174.01562,0.08288,84.44669,2.308e-06,1.7901e-05，-4.774e-06
9,9224708,0.00235612,36.58593777207.9002079000208，-6.30,8.42,8.59,2.00072538186916,G5,1.067166.9363,0.10297123.9143，-5.053e-06，-6.352e-06,6.813e-06
10,10224717,0.00241687，-50.86707360,92.9368029777,42.23,40.02,8.59,3.74906135665185,F6V,0.489,58.65441,0.03711，-72.08957,1.3973e-05,1.9034e-05,1.1379e-05
11,11224720,0.00248646,46.94000154233.100233100233,11.09，-2.02,7.34,0.502286460923622,A2,0.081159.15237,0.1036170.31215,1.659e-06,1.2532e-05，-1.558e-06
12,12224715，，，，，，0.00272783，-35.96022482246.305418719212，-5.99，-0.10,8.43,1.47263016788597，K4III，1.484199.36567,0.14237，-144.63632，-6.5e-08，-7.152e-06，-9.6e-08
13,13224728,0.00277864，-22.59468060286.532951289398,8.45，-10.07,8.80,1.5141271347959，K0III,1.128264.5403,0.19243，-110.08871，-5.382e-06,1.1733e-05，-1.2913e-05
14,14224726,0.00321812，-00.36042119195.694716242661,61.75，-11.67,7.25,0.792104500673564,K0,1.200195.69077,0.16486，-1.23101，-1.18e-07,5.858e-05，-1.107e-05
15,15236267,0.00335392,50.79117384408.163265306122,13.88,5.47,8.60,0.545830421822663,K2,1.166258.01976,0.22655316.26412，-8.41e-06,2.7456e-05,6.841e-06
16,17224732，，，，，，，0.00340663，-40.19232842162.60162601626，-34.46，-26.37，，8.15,2.09437557887709，F3V，0.425124.20847,0.11077，-104.93583，-1.339e-05，-2.7174e-05，-1.5878e-05
17,16,,,,,,0.00342723,-54.91412819,1886.79245283019,257.39,-96.63,,11.71,0.331379348003946,,0.421,1084.53445,0.97309,-1543.94618,-0.00072535,0.002353602,-0.000508033
18,18，，，，，，，0.00354261，-04.05373813,50.1756146512795，-127.22,23.78,11.03,7.52753649350244，K5,1.567,50.05006,0.04641，-3.54701,4.37e-07，-3.0944e-05,5.769e-06
19,19224721,0.00355446,38.30408636242.718446601942，-2.50，-15.07,6.53，-0.395513919834326，G5,0.955190.46888,0.17724150.44538,1.0993e-05，-2.931e-06，-1.3914e-05“拆分（“\n”）；
var header=csv[0]。拆分（“，”），项=[]；
对于（var i=1；i，如下所示：

你可以在内环中选择你喜欢的

您可以预先计算[“StarID”、“X”、“Y”、“Z”].indexOf（header[j]）以保存处理


var csv=`StarID、HIP、HD、HR、Gliese、bayerflassteed、ProperName、RA、Dec、Distance、PMRA、PMDec、RV、Mag、AbsMag、Spectrum、ColorIndex、X、Y、Z、VX、VY、VZ
0,0,0,0.000004848,0,0,0,0，-26.73,4.85，G2V，0.656,0,0,0,0,0,0,0
1,1224700,6.079e-05,01.08901332282.485875706215，-5.20，-1.88,9.10,1.84501631012894,F5,0.482282.43485,0.00449,5.36884,4.9e-08，-7.12e-06，-2.574e-06
2,2224690，，，，，0.00025315，-19.49883745,45.662100456621181.21，-0.93,9.27,5.97222057420059，K3V，0.999,43.04329,0.00285，-15.24144，-7.1e-08,4.0112e-05，-1.94e-07
3,3224699,0.00033386,38.85928608355.871886120996,5.24，-2.91,6.61，-1.1464684004746，B9，-0.019277.11358,0.02422223.27753,3.148e-06,9.04e-06，-3.909e-06
4,4224707，0.00055878，-51.89354612129.032258064516,62.85,0.16,8.06,2.50650851253155，F0V，0.370,79.62896,0.01164，-101.53103,7.2e-08,3.9313e-05,6.1e-08
5,5224705,0.00066435，-40.59122440348.432055749129,2.53,9.07,8.55,0.839409483669963,G8III,0.902264.58918,0.04601，-226.71007,9.967e-06,4.275e-06,1.1633e-05
6,6，，，，，，0.00120942,03.94648893,53.1914893617021226.29，-12.84,12.31,8.6807892463184，M0V:，1.336,53.06535,0.0168,3.66089,2.09e-07,5.835e-05，-3.303e-06
7,7,20.03660216,56.369785794814，-208.12，-200.79,9.64,5.88476807747854,G0,0.740,52.95794,0.02084,19.31343,1.8821e-05，-5.6864e-05，-5.1547e-05
8,8224709,0.00181944,25.88647445193.423597678917,19.09，-5.66,9.05,2.61745271546971，M6e-M8.5e Tc，1.102174.01562,0.08288,84.44669,2.308e-06,1.7901e-05，-4.774e-06
9,9224708,0.00235612,36.58593777207.9002079000208，-6.30,8.42,8.59,2.00072538186916,G5,1.067166.9363,0.10297123.9143，-5.053e-06，-6.352e-06,6.813e-06
10,10224717,0.00241687，-50.86707360,92.9368029777,42.23,40.02,8.59,3.74906135665185,F6V,0.489,58.65441,0.03711，-72.08957,1.3973e-05,1.9034e-05,1.1379e-05
11,11224720,0.00248646,46.94000154233.100233100233,11.09，-2.02,7.34,0.502286460923622,A2,0.081159.15
const arr = csv.split(/\n/g).map(str => str.split(','));
const headings = arr.shift();
const xyz = arr.map(arr => {
  return { x: arr[17], y: arr[18], z: arr[19] };
});