Hello everyone. I am very much new to R. I am trying to learn with a project.
But I am continuously getting this error Error in FUN(X[[i]], ...) : object 'variable' not found.
Please help me to solve this. Thanks in ADVANCE.
PM<- testing%>% as.data.frame %>%
+ select('Date','PM2.5')%>%
+ mutate(date_ymd=as.Date(Date,format="%Y-%m-%d"))%>%
+ group_by(date_ymd)%>%
+ summarise('PM2.5' = max('PM2.5',na.rm=TRUE))
>
> PM_max <- as.data.frame('PM')
> PM_max2 <- melt('PM_max2', id.vars='date_ymd', measure.vars=c('PM2.5'))
> daily_max<-ggplot(PM_max2,aes(x=variable, y=value, color=variable)) +
+ geom_boxplot()+ coord_flip()+
+ scale_colour_manual(values=c("magenta3"))+
+ theme(legend.position="none")+scale_y_continuous(breaks = seq(0, 700, by = 50))+
+ labs(title="Distribution of pollutants on Monthly Average values",x='Pollutants',y='ug/m3')
>
>
> hist_daily_max<-ggplot(PM_max2,aes(x = value,fill=variable)) +
+ facet_wrap(~variable, nrow = 1) +
+ geom_histogram(binwidth=20)+
+ scale_fill_manual(values=c("magenta3"))+
+ theme(legend.position="none")+
+ labs(x='ug/m3',y='Count')
>
> grid.arrange(daily_max,hist_daily_max,nrow=2)
Error in FUN(X[[i]], ...) : object 'variable' not found