R

Asked • 06/06/19

Persistent invalid graphics state error when using ggplot2?

I believe my dataframe is okay and my code is okay. In fact, I have eliminated parts of the dataframe and most of the graphing code to make things as basic as possible. But still, I get: Error in .Call.graphics(C_palette2, .Call(C_palette2, NULL)) : invalid graphics stateWhat is wrong here? Here is the data: date trt var val 1/8/2008 cc sw5 0.2684138 1/8/2008 cc sw15 0.2897586 1/8/2008 cc sw5 0.2822414 2/8/2008 cc sw5 0.2494583 2/8/2008 cc sw5 0.2692917 2/8/2008 cc sw15 0.2619167 2/8/2008 cc sw5 0.204375 3/8/2008 cc sw5 0.2430625 3/8/2008 cc sw5 0.2654375 3/8/2008 cc sw5 0.2509583 3/8/2008 cc sw5 0.2055625 1/8/2008 ccw sw15 0.2212414 1/8/2008 ccw sw5 0.3613448 1/8/2008 ccw sw5 0.2607586 2/8/2008 ccw sw5 0.2087917 2/8/2008 ccw sw15 0.3390417 2/8/2008 ccw sw5 0.2436458 2/8/2008 ccw sw5 0.290875 3/8/2008 ccw sw5 0.20175 3/8/2008 ccw sw15 0.328875 3/8/2008 ccw sw5 0.2328958 3/8/2008 ccw sw5 0.2868958When I work with this data, I specify dates like this: df<-df[order(as.Date(df$date,format="%d/%m/%Y")),,drop=FALSE]and here I want to make a scatterplot: ggplot(data = df,aes(x = date,y = val)) + geom_point(aes(group = trt))

1 Expert Answer

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James G. answered • 06/06/19

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