[R] ggplot2, geom_point with some symbols unfilled

[Roy Mendelssohn - NOAA Federal]

Perfect.  Thanks.

-Roy

On Jan 5, 2015, at 5:20 PM, Ista Zahn <istazahn at gmail.com> wrote:

> You were close, but a) if you want to map shape to something it needs
> to be inside an aes() call, and b) shape 1 is also an open circle. I
> think this does what you want:
> 
> ggplot(temp,aes(x=lon,y=lat)) +
>  geom_point(aes(colour=chlcol, shape=factor(missing)),size=3) +
>  scale_colour_gradient(low="lightblue", high="red", na.value="black") +
>  scale_shape_manual(values=c(19,1)) + theme_bw()
> 
> Best,
> Ista
> 
> On Mon, Jan 5, 2015 at 6:24 PM, Roy Mendelssohn - NOAA Federal
> <roy.mendelssohn at noaa.gov> wrote:
>> Hi All:
>> 
>> I have a data frame the first part of which is the following:
>> 
>>         date     lon    lat       mean     chlcol missing
>> 1  2003-04-23 203.899 19.664 0.07300000 0.15176637       0
>> 2  2003-04-24 204.151 19.821        NaN        NaN       1
>> 3  2003-04-30 203.919 20.351 0.07400000 0.15515780       0
>> 4  2003-05-01 204.229 20.305 0.06525000 0.12548281       0
>> 5  2003-05-02 204.082 20.340 0.04028571 0.04081825       0
>> 6  2003-05-03 203.716 20.394 0.08366667 0.18794159       0
>> 7  2003-05-04 204.150 20.346 0.02825000 0.00000000       0
>> 8  2003-05-05 204.385 20.297 0.05566667 0.09298163       0
>> 9  2003-05-07 204.997 20.451        NaN        NaN       1
>> 10 2003-05-08 206.066 20.448 0.06533334 0.12576544       0
>> 
>> or from dput:
>> 
>>> dput(temp)
>> structure(list(date = structure(c(12165, 12166, 12172, 12173,
>> 12174, 12175, 12176, 12177, 12179, 12180), class = "Date"), lon = c(203.899,
>> 204.151, 203.919, 204.229, 204.082, 203.716, 204.15, 204.385,
>> 204.997, 206.066), lat = c(19.664, 19.821, 20.351, 20.305, 20.34,
>> 20.394, 20.346, 20.297, 20.451, 20.448), mean = c(0.0729999989271164,
>> NaN, 0.0740000000223517, 0.0652500009164214, 0.0402857145028455,
>> 0.0836666661004225, 0.028249999973923, 0.0556666664779186, NaN,
>> 0.0653333364365001), chlcol = c(0.151766366071598, NaN, 0.155157797040127,
>> 0.125482811598769, 0.040818250276168, 0.187941591833751, 0, 0.0929816299987062,
>> NaN, 0.1257654379528), missing = c(0, 1, 0, 0, 0, 0, 0, 0, 1,
>> 0)), .Names = c("date", "lon", "lat", "mean", "chlcol", "missing"
>> ), row.names = c("1", "2", "3", "4", "5", "6", "7", "8", "9",
>> "10"), class = "data.frame”)
>> 
>> What I want to do is put a point at each lat-lon location, with the color set by chlcol, except where chlcol is NaN, where I want the point to be a an open circle color black. The variable “missing" is 1 if chlcol is NaN, and zero if not.  So I have tried:
>> 
>> ggplot(temp,aes(x=lon,y=lat)) + geom_point(aes(colour=chlcol),size=3.,shape=missing) + scale_colour_gradient(low="lightblue", high="red") + scale_shape_manual(values=c(1,21)) + theme_bw()
>> 
>> This gets real close except the missing circles are black and filled, rather than black and open.  A shape value of 21 is suppose to be an open circle.
>> 
>> Thanks for any help.
>> 
>> -Roy
>> 
>> **********************
>> "The contents of this message do not reflect any position of the U.S. Government or NOAA."
>> **********************
>> Roy Mendelssohn
>> Supervisory Operations Research Analyst
>> NOAA/NMFS
>> Environmental Research Division
>> Southwest Fisheries Science Center
>> ***Note new address and phone***
>> 110 Shaffer Road
>> Santa Cruz, CA 95060
>> Phone: (831)-420-3666
>> Fax: (831) 420-3980
>> e-mail: Roy.Mendelssohn at noaa.gov www: http://www.pfeg.noaa.gov/
>> 
>> "Old age and treachery will overcome youth and skill."
>> "From those who have been given much, much will be expected"
>> "the arc of the moral universe is long, but it bends toward justice" -MLK Jr.
>> 
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**********************
"The contents of this message do not reflect any position of the U.S. Government or NOAA."
**********************
Roy Mendelssohn
Supervisory Operations Research Analyst
NOAA/NMFS
Environmental Research Division
Southwest Fisheries Science Center
***Note new address and phone***
110 Shaffer Road
Santa Cruz, CA 95060
Phone: (831)-420-3666
Fax: (831) 420-3980
e-mail: Roy.Mendelssohn at noaa.gov www: http://www.pfeg.noaa.gov/

"Old age and treachery will overcome youth and skill."
"From those who have been given much, much will be expected" 
"the arc of the moral universe is long, but it bends toward justice" -MLK Jr.