我创建了一个按月年份对栅格求和的函数，它很好用，但是当我在其他计算机上运行代码时，mes_sum堆栈的所有图像的值均为0。我无法理解该错误，因为在其他计算机上效果很好。我认为该错误可能是内存错误，但是R不会显示消息“在向量中分配错误...”
mes_año<- format(as.Date(dias, format = "%Y-%m-%d"), format = "%Y%m")
mes_año<- as.integer(mes_año);mes_año
mes_sum<-stackApply(stack(files), indices=mes_año, fun=sum, na.rm=T)
错误：
> mes_sum
class : RasterBrick
dimensions : 63, 52, 3276, 58 (nrow, ncol, ncell, nlayers)
resolution : 0.08983153, 0.08983153 (x, y)
extent : -75.72798, -71.05674, -49.22768, -43.56829 (xmin, xmax, ymin, ymax)
coord. ref. : +proj=longlat +datum=WGS84 +no_defs +ellps=WGS84 +towgs84=0,0,0
data source : C:\Users\TPPC\AppData\Local\Temp\RtmpKolenM\raster\r_tmp_2019-07-13_032823_15524_68776.grd
names : index_201403, index_201404, index_201405, index_201406, index_201407, index_201408, index_201409, index_201410, index_201411, index_201412, index_201501, index_201502, index_201503, index_201504, index_201505, ...
min values : 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, ...
max values : 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, ...
良好的喷射力（相同的代码，不同的计算机：
> mes_sum
class : RasterBrick
dimensions : 63, 52, 3276, 58 (nrow, ncol, ncell, nlayers)
resolution : 0.08983153, 0.08983153 (x, y)
extent : -75.72798, -71.05674, -49.22768, -43.56829 (xmin, xmax, ymin, ymax)
coord. ref. : +proj=longlat +datum=WGS84 +no_defs +ellps=WGS84 +towgs84=0,0,0
data source : in memory
names : index_201403, index_201404, index_201405, index_201406, index_201407, index_201408, index_201409, index_201410, index_201411, index_201412, index_201501, index_201502, index_201503, index_201504, index_201505, ...
min values : 0.60000002, 2.40125140, 7.95000005, 15.93932509, 13.05649427, 6.75000021, 10.20000026, 0.15000001, 3.30000007, 11.40000042, 0.90000001, 0.35000001, 8.85000017, 32.55000037, 19.86704370, ...
max values : 405.6248, 651.3500, 1057.0718, 732.1000, 998.9205, 1085.4109, 778.4997, 697.0117, 1108.9277, 521.9504, 555.6580, 312.7431, 934.3000, 602.0671, 1185.9418, ...