Dear all.
I am a new user of Perl with some experience in perl data extraction with
pattern matching, but never did anything with making graphy using perl. I
need to draw a chromosome copy number graphy and p-values. The data looks
are as follow:
SNP id physical location copy number meta p-value
SNP_A-1507380 120264678 1.207953 -20
SNP_A-1507487 120319466 1.261954 -20
SNP_A-1517022 120783585 0.957751 -20
SNP_A-1511651 121478764 0.957812 -20
SNP_A-1516818 122227549 2.004318 0.722914
SNP_A-1516270 122257923 3.298868 0.967391
SNP_A-1512747 122611515 1.419261 -14.5074
SNP_A-1519155 123556896 0.740608 -14.5074
SNP_A-1517539 124789024 1.202693 -14.5074
SNP_A-1511157 124890914 1.222511 -14.5074
The physical location should be the place where the p-value and copy number
should be along the vertical line. The SNP id could be treated as
annotation. I have some open source code available for drawing a chromosome
with cytobands writing in perl. The final gool is to put this graph of copy
number beside the chromosome map, which make me think that it will be
easier using perl to do draw this copy number map. My questions to you is:
Is it possible to create graphy like this using perl?
The graphy in my mind should look like this and it will be better to use
histogram bar for meta p-values.
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Thanks in advance,
Aiguo Li
