linux,r,bash,shell,csv , display.im6: no decode delegate for this image format `/tmp/magick-KFcbfWUi'


display.im6: no decode delegate for this image format `/tmp/magick-KFcbfWUi'

Question:

Tag: linux,r,bash,shell,csv

I'm using Rio and I have a sample.csv which looks as following

hour,count
0300,0
0300,0
0300,1
0300,1
0300,2
0301,1
0301,2
0301,2
0301,3

I run following command:

$ < sample.csv Rio -ge 'g + geom_bar(df, aes(hour, count))' | display

and I get

display.im6: no decode delegate for this image format `/tmp/magick-Gvr3kRZh' @ error/constitute.c/ReadImage/544.

from what I know geom_bar expects the dataset first which is df and then columns, i'm not sure why i don't see the graph, anyone knows what am i missing?

thanks


Answer:

See docs.ggplot2.org/0.9.3.1/geom_bar.html. It expects the mapping first, then the data. And you don't actually have to specify df for the data, because it's already been captured in g.

And I think you need to specify stat='identity' if you want to specify a y aesthetic.


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