Hi
There are plenty of options
https://stat.ethz.ch/R-manual/R-devel/library/mgcv/html/in.out.html
http://www.dpi.inpe.br/gilberto/tutorials/software/R-contrib/sp/html/point.in.polygon.html
http://finzi.psych.upenn.edu/library/DescTools/html/PtInPoly.html
did you try any of them?
Cheers
Petr
> -----Original Message-----
> From: R-help [mailto:r-help-bounces at r-project.org] On Behalf Of Indhira,
> Anusha
> Sent: Wednesday, November 2, 2016 12:50 PM
> To: r-help at r-project.org
> Subject: [R] point in polygon dataframe data
>
> Hi ,
>
> I have polygon vertices as given below
>
> ft_num dv_ft dp30_mn_phase dv_n2 p30_mn_phase tgt_mn_phase
> n2_bin fuel_mn epr_mn min_dp30_mnp
> 19 28 zero-gradient -0.0006680832 transient 34.76701 493.6494
g75
> 304.56411 0.9593899 -0.0006680832
> 18 28 neg-gradient -0.0022879651 transient 30.90294 459.6093
g75
> 262.22673 0.9561083 -0.0022879651
> 22 31 zero-gradient -0.0001535604 transient 12.15854 304.8818
l50
> 29.82188 0.9487416 -0.0001535604
> 2 10 zero-gradient 0.0003930719 transient 21.80663 503.8669
l50
> 242.14284 0.9250054 0.0003930719
> 1 10 pos-gradient -0.0016072616 transient 23.35261 516.5950
b50-75
> 265.61233 0.9206513 -0.0016072616
> 5 13 zero-alt 0.0010052941 transient 31.93961 574.0899
b50-75
> 2092.06574 1.0072156 0.0010052941
> 6 14 neg-gradient -0.0017905848 transient 42.34545 626.4670
b50-75
> 465.59408 0.9588052 -0.0017905848
> 20 30 neg-gradient -0.0015010177 transient 46.30469 644.3314
g75
> 525.38626 0.9496521 -0.0015010177
> max_dp30_mnp min_p30_mnp max_p30_mnp
> 19 -0.0006680832 34.76701 34.76701
> 18 -0.0022879651 30.90294 30.90294
> 22 -0.0001535604 12.15854 12.15854
> 2 0.0003930719 21.80663 21.80663
> 1 -0.0016072616 23.35261 23.35261
> 5 0.0010052941 31.93961 31.93961
> 6 -0.0017905848 42.34545 42.34545
> 20 -0.0015010177 46.30469 46.30469
>
> Is there a function in R which can tell whether a point from a data.frame
> having same columns is inside or outside the polygon( can remove ft_num
> attribute for comparision)?
>
> Thanks,
> Alily
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