[R] Alpha not working in geom_rect

adel daoud daouda at newschool.edu
Tue Mar 10 03:15:02 CET 2015


Thanks for the info Jeff. I will stick to using annotate()


--

Adel Daoud, PhD, Researcher



The New School for Social Research,

Visiting Scholar in the Economics Department,

6 East 16th Street New York, NY 10003,

daouda at newschool.edu





University of Gothenburg

Department of Sociology and Work Science,

Box 720

405 30, Göteborg, Sweden

Visiting address: Sprängkullsgatan 25, room F411

Sprängkullsgatan 25, room K109

+46 031-786 41 73

Adel.daoud at sociology.gu.se

On Mon, Mar 9, 2015 at 9:42 PM, Jeff Newmiller <jdnewmil at dcn.davis.ca.us>
wrote:

> I have run into this a couple of times ... If you generate the rectangles
> once per row of your data, the fill gets more and more "dense" so your
> alpha seems to not work. The annotate call only paints the rectangle once
> so you don't have this problem.
> ---------------------------------------------------------------------------
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> Sent from my phone. Please excuse my brevity.
>
> On March 9, 2015 3:24:23 PM PDT, adel daoud <daouda at newschool.edu> wrote:
> >Hi Jim,
> >
> >Thanks for the input but that did not work. I am suing Rstudio by the
> >way
> >and I guess that has a better device that would support ggplot output.
> >
> >The annotate options works but that does not explain why the geom_area
> >does
> >not work:
> >annotate("rect", xmin=2, xmax=10, ymin=0,  ymax=1, fill="black",
> >alpha=0.5)
> >
> >Best
> >Adel
> >
> >
> >--
> >
> >Adel Daoud, PhD, Researcher
> >
> >
> >
> >The New School for Social Research,
> >
> >Visiting Scholar in the Economics Department,
> >
> >6 East 16th Street New York, NY 10003,
> >
> >daouda at newschool.edu
> >
> >
> >
> >
> >
> >University of Gothenburg
> >
> >Department of Sociology and Work Science,
> >
> >Box 720
> >
> >405 30, Göteborg, Sweden
> >
> >Visiting address: Sprängkullsgatan 25, room F411
> >
> >Sprängkullsgatan 25, room K109
> >
> >+46 031-786 41 73
> >
> >Adel.daoud at sociology.gu.se
> >
> >On Sun, Mar 8, 2015 at 12:46 AM, Jim Lemon <drjimlemon at gmail.com>
> >wrote:
> >
> >> Hi Adel,
> >> Almost certainly because the device you were using doesn't support
> >> transparency.Try it with a PDF device and check the resulting file in
> >a PDF
> >> reader:
> >>
> >> pdf("ad.pdf")
> >> print(p)
> >> dev.off()
> >>
> >> Jim
> >>
> >>
> >> On Sun, Mar 8, 2015 at 4:39 AM, Adel <adel.daoud at socav.gu.se> wrote:
> >>
> >>> Hi
> >>> I am trying to activate the alpha argument to work, but for some
> >reason it
> >>> does not to play with me. Anybody has an idea why?
> >>>
> >>>
> >>> p <- ggplot(data = prediction_df, aes(x=x, y=prediction,
> >fill=threshold))
> >>> +
> >>> geom_area(colour="black", size=.2, alpha=.4) +
> >>> scale_fill_brewer(palette="Set1",
> >>> breaks=rev(levels(prediction_df$threshold)))
> >>> p + geom_rect(aes(xmin=2, xmax=10, ymin=(0), ymax=(1)),
> >fill="black",
> >>> alpha=0.5)
> >>>
> >>>
> >>> prediction_df
> >>>      x prediction  threshold
> >>> 1  -10  0.5694161       noAF
> >>> 2   -9  0.5700513       noAF
> >>> 3   -8  0.5706863       noAF
> >>> 4   -7  0.5713211       noAF
> >>> 5   -6  0.5719556       noAF
> >>> 6   -5  0.5725899       noAF
> >>> 7   -4  0.5732240       noAF
> >>> 8   -3  0.5738578       noAF
> >>> 9   -2  0.5744914       noAF
> >>> 10  -1  0.5751247       noAF
> >>> 11   0  0.5757578       noAF
> >>> 12   1  0.5763906       noAF
> >>> 13   2  0.5770232       noAF
> >>> 14   3  0.5776556       noAF
> >>> 15   4  0.5782876       noAF
> >>> 16   5  0.5789195       noAF
> >>> 17   6  0.5795510       noAF
> >>> 18   7  0.5801823       noAF
> >>> 19   8  0.5808134       noAF
> >>> 20   9  0.5814441       noAF
> >>> 21  10  0.5820747       noAF
> >>> 22 -10  0.2359140   singleAF
> >>> 23  -9  0.2356847   singleAF
> >>> 24  -8  0.2354550   singleAF
> >>> 25  -7  0.2352249   singleAF
> >>> 26  -6  0.2349943   singleAF
> >>> 27  -5  0.2347634   singleAF
> >>> 28  -4  0.2345321   singleAF
> >>> 29  -3  0.2343003   singleAF
> >>> 30  -2  0.2340682   singleAF
> >>> 31  -1  0.2338356   singleAF
> >>> 32   0  0.2336027   singleAF
> >>> 33   1  0.2333694   singleAF
> >>> 34   2  0.2331357   singleAF
> >>> 35   3  0.2329016   singleAF
> >>> 36   4  0.2326671   singleAF
> >>> 37   5  0.2324322   singleAF
> >>> 38   6  0.2321969   singleAF
> >>> 39   7  0.2319613   singleAF
> >>> 40   8  0.2317253   singleAF
> >>> 41   9  0.2314889   singleAF
> >>> 42  10  0.2312522   singleAF
> >>> 43 -10  0.1946699 multipleAF
> >>> 44  -9  0.1942640 multipleAF
> >>> 45  -8  0.1938587 multipleAF
> >>> 46  -7  0.1934540 multipleAF
> >>> 47  -6  0.1930500 multipleAF
> >>> 48  -5  0.1926467 multipleAF
> >>> 49  -4  0.1922440 multipleAF
> >>> 50  -3  0.1918419 multipleAF
> >>> 51  -2  0.1914404 multipleAF
> >>> 52  -1  0.1910397 multipleAF
> >>> 53   0  0.1906395 multipleAF
> >>> 54   1  0.1902400 multipleAF
> >>> 55   2  0.1898411 multipleAF
> >>> 56   3  0.1894429 multipleAF
> >>> 57   4  0.1890453 multipleAF
> >>> 58   5  0.1886483 multipleAF
> >>> 59   6  0.1882520 multipleAF
> >>> 60   7  0.1878564 multipleAF
> >>> 61   8  0.1874613 multipleAF
> >>> 62   9  0.1870669 multipleAF
> >>> 63  10  0.1866732 multipleAF
> >>>
> >>>
> >>>
> >>>
> >>>
> >>> --
> >>> View this message in context:
> >>>
> >
> http://r.789695.n4.nabble.com/Alpha-not-working-in-geom-rect-tp4704291.html
> >>> Sent from the R help mailing list archive at Nabble.com.
> >>>
> >>> ______________________________________________
> >>> R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see
> >>> 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.
> >>>
> >>
> >>
> >
> >       [[alternative HTML version deleted]]
> >
> >______________________________________________
> >R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see
> >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.
>
>

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