如何在R中将列表转换为JSON？
要将列表转换为JSON，我们可以使用jsonlite包的toJSON函数。例如，如果我们有一个名为LIST的列表，则可以使用命令toJSON（LIST，pretty=TRUE，auto_unbox=TRUE）将其转换为JSON。我们需要确保将jsonlite软件包加载到R环境中，否则该命令将无法工作。
示例
List<-list(x1=rnorm(50),x2=rnorm(50),x3=rnorm(50)) List输出结果
$x1 [1] 0.94308243 0.92301899 0.38162401 -1.12788003 -1.51346730 -1.13606909 [7] 0.28783669 0.86323673 -0.02449409 -0.13846921 0.15333478 0.21744264 [13] 0.38641702 0.18320168 -1.90449896 0.94474851 -0.01649215 0.50896387 [19] 1.42223991 -0.61505653 1.46317260 -0.60349252 0.17171591 -0.12166583 [25] -1.19631738 0.34294287 -0.84439841 0.42949605 -0.40486289 0.89695985 [31] 0.88799370 0.58950020 0.63531096 -0.10978412 1.11363767 2.36574613 [37] 0.66691232 0.71319992 -1.34867759 -0.37606485 -0.02335364 -0.02595811 [43] 1.08423018 0.52269486 0.61654530 -1.33044218 0.72346125 -0.93851187 [49] 0.49235890 -0.58943233 $x2 [1] -0.44401337 -0.61341264 -0.61251517 -0.05950723 0.91463384 0.90728167 [7] 0.78000181 -0.78143394 1.24853733 -0.85494506 -0.07868259 0.66367854 [13] 0.79670013 -1.33070957 -1.27639339 -0.76427488 1.15823160 0.98859937 [19] 0.02136738 -1.05941847 -0.39919997 1.21333167 -0.31154551 -0.63453177 [25] 1.12919509 0.55256850 -0.32983541 1.07686854 0.06262822 -0.46020131 [31] 1.17276354 -0.51355777 -1.17209858 -1.06453359 -0.70492363 1.51030806 [37] 0.51127388 1.26113160 -0.69110026 -0.69248700 -0.25675307 1.94092037 [43] -1.23696224 0.57922413 0.12468180 1.87270623 -0.15343319 0.36094339 [49] -1.02383545 0.18148960 $x3 [1] 0.13263754 -0.70828647 -0.65796999 -1.43525751 -0.53005370 0.12586719 [7] -0.35785707 -0.79081380 0.35638118 0.48878433 -0.86328512 -0.34382851 [13] -0.48752349 -0.08130422 -0.96386871 2.34599355 1.03778449 -0.48729035 [19] -0.04314423 -0.55603525 -0.63751972 0.23121152 -0.72042376 1.06212143 [25] -0.69914649 0.46835959 0.39862266 -0.72878725 0.92411557 -0.33659477 [31] 0.14468848 -0.26056546 -3.64425038 0.98479249 0.15229069 2.70766937 [37] -1.27364139 -1.80614856 2.33091013 -1.19691045 -0.89934519 -0.50623519 [43] -0.73738808 2.35312730 -0.70206558 1.63775668 -1.01573441 -0.62218434 [49] 0.44641788 2.38678050
示例
library(jsonlite) ListJSON=toJSON(List,pretty=TRUE,auto_unbox=TRUE) ListJSON输出结果
{
"x1": [0.9431, 0.923, 0.3816, -1.1279, -1.5135, -1.1361, 0.2878, 0.8632, -0.0245, -0.1385, 0.1533, 0.2174, 0.3864, 0.1832, -1.9045, 0.9447, -0.0165, 0.509, 1.4222, -0.6151, 1.4632, -0.6035, 0.1717, -0.1217, -1.1963, 0.3429, -0.8444, 0.4295, -0.4049, 0.897, 0.888, 0.5895, 0.6353, -0.1098, 1.1136, 2.3657, 0.6669, 0.7132, -1.3487, -0.3761, -0.0234, -0.026, 1.0842, 0.5227, 0.6165, -1.3304, 0.7235, -0.9385, 0.4924, -0.5894],
"x2": [-0.444, -0.6134, -0.6125, -0.0595, 0.9146, 0.9073, 0.78, -0.7814, 1.2485, -0.8549, -0.0787, 0.6637, 0.7967, -1.3307, -1.2764, -0.7643, 1.1582, 0.9886, 0.0214, -1.0594, -0.3992, 1.2133, -0.3115, -0.6345, 1.1292, 0.5526, -0.3298, 1.0769, 0.0626, -0.4602, 1.1728, -0.5136, -1.1721, -1.0645, -0.7049, 1.5103, 0.5113, 1.2611, -0.6911, -0.6925, -0.2568, 1.9409, -1.237, 0.5792, 0.1247, 1.8727, -0.1534, 0.3609, -1.0238, 0.1815],
"x3": [0.1326, -0.7083, -0.658, -1.4353, -0.5301, 0.1259, -0.3579, -0.7908, 0.3564, 0.4888, -0.8633, -0.3438, -0.4875, -0.0813, -0.9639, 2.346, 1.0378, -0.4873, -0.0431, -0.556, -0.6375, 0.2312, -0.7204, 1.0621, -0.6991, 0.4684, 0.3986, -0.7288, 0.9241, -0.3366, 0.1447, -0.2606, -3.6443, 0.9848, 0.1523, 2.7077, -1.2736, -1.8061, 2.3309, -1.1969, -0.8993, -0.5062, -0.7374, 2.3531, -0.7021, 1.6378, -1.0157, -0.6222, 0.4464, 2.3868]
}