Hello Everyone,
I have a text file which has data in this format.

gene    start    end    freq
Slc19a1    81    144    1
Slc19a1    192    255    6
Slc19a1    273    336    7
Slc19a1    363    426    4
Slc19a1    465    528    3
Slc19a1    540    603    5
Slc19a1    813    876    5
Slc19a1    912    975    6
Slc19a1    987    1050    8
Slc19a1    1062    1125    6
Slc19a1    1170    1233    8
Slc19a1    1278    1341    6

I want to draw a histogram between start and end of the above files on the
x axis and freq associated with each interval on the y axis. How can I do
this. I am just beginning to plot graphs in R.

Regards

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