我昨天更新了所有的包,现在我在 sqldf 包中遇到了一个错误:
sqldf("select * from dt")
Error in if (.allows_extensions(db)) { :
missing value where TRUE/FALSE needed
我尝试使用 checkpoint() 来访问所有执行正确但再次失败的包的现有版本:
checkpoint("2015-02-25")
Scanning for loaded pkgs
Scanning for packages used in this project
Installing packages used in this project
There are binary versions available (and will be installed) but the
source versions are later:
Error in data.frame(binary = binvers, source = srcvers, row.names = bins, :
duplicate row.names: downloader, sqldf, survey, plyr, ggplot2,scales, mapproj, RColorBrewer, maptools, raster, rgeos, fields, mgcv, stringr, spatstat, rgdal, RSQLite, MonetDB.R, RCurl, car, tree, ROCR, rattle, rpart, caret, randomForest, RODBC, reshape2, MASS, epiR, faraway, ggmap, maps, xlsx, pROC, colorspace, quantmod, R2wd, checkpoint
有人可以帮我摆脱这个问题..