Christoph Krammer wrote: > Hello everybody, > > Since my first message was caught by the spam filter, I just try to do it > again: > > I want to use R to generate plots from categorial data. The data contains > results from OCR scans over images with are preprocessed by different image > filtering techniques. A small sample data set looks as following: > > >>data <- read.csv("d:/tmp_da/sql_data/filter_d_tool.csv", header=T) >>data > > ocrtool filter_setting avg.hit. > 1 FineReader 2x1 0.383 > 2 FineReader 2x2 0.488 > 3 FineReader 3x2 0.268 > 4 FineReader 3x3 0.198 > 5 FineReader 4x3 0.081 > 6 FineReader 4x4 0.056 > 7 gocr 2x1 0.153 > 8 gocr 2x2 0.102 > 9 gocr 3x2 0.047 > 10 gocr 3x3 0.052 > 11 gocr 4x3 0.014 > 12 gocr 4x4 0.002 > 13 ocrad 2x1 0.085 > 14 ocrad 2x2 0.094 > 15 ocrad 3x2 0.045 > 16 ocrad 3x3 0.050 > 17 ocrad 4x3 0.025 > 18 ocrad 4x4 0.009 > > > I now want to draw a plot with the categories (filter_setting) as X axis, > and the avg_hit as Y axis. There should be lines for each ocrtool. > > But when I draw a plot, the resulting plot always contains bars, even if I > specify type="n". > >>plot(data$filter_setting, data$avg.hit., type="n") > > > When I only plot the categories, without data, there appear strange grey > (but empty) boxes. > >>plot(data$filter_setting, type="n") > > > Who do I get a clean white box to draw the different lines in? > Hi Christoph,
How about this? plot(as.numeric(krammer$filter_setting[1:6]),krammer$avg_hit[1:6], type="b",col=2,ylim=c(0,0.5),main="OCR performance", xlab="Filter setting",ylab="Average hits",axes=FALSE) points(as.numeric(krammer$filter_setting[7:12]),krammer$avg_hit[7:12], type="b",col=3) points(as.numeric(krammer$filter_setting[13:18]),krammer$avg_hit[13:18], type="b",col=4) box() axis(1,at=1:6,labels=c("2x1","2x2","3x2","3x3","4x3","4x4")) axis(2) Jim ______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.