LOGMARS 2D bar code: CODABLOCK F mode, DataMatrix, Maxicode, PDF-417, Aztec, MicroPDF417, QR code, RSS Barcode (GS1 Databar) Supported Image: BITMAP, BMP, PCX (Max. 256 colors graphics) V V V V V V V V 3 1.1.1 选购配件 产品选购配备 Applicator I/O 接口模块 (GPIO) 切刀模块(全...
WORD, EXCEL, POWERPOINT, PDF, TXT Power 5V 2A G-Sensor 360° Degree Direction External Memory Up to 128GB Audio File Fomat MID/OGG/APE/WMA/WAV/MP3 Vedio File Fomat WMV/RMVB/MPG/AVI/3GP/MP4 Image File Fomat GIF/BMP/PNG/JPG Language ...
使用mtcars数据集来查看分组和面: #将am、vs和cyl变量转化为因子mtcars$am<- factor(mtcars$am, levels=c(0,1),labels=c("Automatic","Manual"))mtcars$vs<- factor(mtcars$vs, levels=c(0,1),labels=c("V-Engine","Straight Engine"))mtcars$c...