Re: [R] add single points to a level plot

[lily li]

Thanks.
Now it can run and generate plots, but there are the two lines on each of
the plots. I don't know the problem for this?

Error using packet 1
any(sp) is not TRUE



On Thu, Mar 8, 2018 at 8:48 AM, Eric Berger  wrote:

> You need to load the package 'rasterVis'
>
> > library(rasterVis)
>
> HTH,
> Eric
>
>
> On Thu, Mar 8, 2018 at 5:11 PM, lily li  wrote:
>
>> Hi all,
>>
>> I ran the code:
>> > s <- stack(replicate(2, raster(matrix(runif(100), 10
>> > xy <- data.frame(coordinates(sampleRandom(s, 10, sp=TRUE)),
>> +  z1=runif(10), z2=runif(10))
>> > levelplot(s, margin=FALSE, at=seq(0, 1, 0.05)) +
>> +   layer(sp.points(xy, pch=ifelse(pts$z1 < 0.5, 2, 3), cex=2, col=1),
>> columns=1) +
>> +   layer(sp.points(xy, pch=ifelse(pts$z2 < 0.5, 2, 3), cex=2, col=1),
>> columns=2)
>>
>> And got the error:
>> Error in UseMethod("levelplot") :
>>   no applicable method for 'levelplot' applied to an object of class
>> "c('RasterStack', 'Raster', 'RasterStackBrick', 'BasicRaster')"
>>
>> what is the problem? Thanks.
>>
>> On Thu, Mar 8, 2018 at 12:07 AM, lily li  wrote:
>>
>> > Hi all,
>> >
>> > I'm trying to add single points with known coordinates to a level plot,
>> > but could not find the proper answer. I got to know that layer()
>> function
>> > is good for this, but I don't know which package is related to this
>> > function. The source is here:
>> > https://stackoverflow.com/questions/28597149/add-xy-points-
>> to-raster-map-
>> > generated-by-levelplot
>> >
>> > but my question is a little different as I know the coordinates of the
>> > single point, rather than a range. Thanks for any help you could
>> provide.
>> >
>>
>> [[alternative HTML version deleted]]
>>
>> __
>> R-help@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/posti
>> ng-guide.html
>> and provide commented, minimal, self-contained, reproducible code.
>>
>
>

[[alternative HTML version deleted]]

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Re: [R] add single points to a level plot

[Jeff Newmiller]

library(sos)
findFn( "layer" )
findFn( "levelplot" )

Also, experts in spatial analysis tend to answer questions on the special 
mailing list where the Posting Guide says they should. Read it to find out 
where that is. 
-- 
Sent from my phone. Please excuse my brevity.

On March 8, 2018 7:11:34 AM PST, lily li  wrote:
>Hi all,
>
>I ran the code:
>> s <- stack(replicate(2, raster(matrix(runif(100), 10
>> xy <- data.frame(coordinates(sampleRandom(s, 10, sp=TRUE)),
>+  z1=runif(10), z2=runif(10))
>> levelplot(s, margin=FALSE, at=seq(0, 1, 0.05)) +
>+   layer(sp.points(xy, pch=ifelse(pts$z1 < 0.5, 2, 3), cex=2, col=1),
>columns=1) +
>+   layer(sp.points(xy, pch=ifelse(pts$z2 < 0.5, 2, 3), cex=2, col=1),
>columns=2)
>
>And got the error:
>Error in UseMethod("levelplot") :
>  no applicable method for 'levelplot' applied to an object of class
>"c('RasterStack', 'Raster', 'RasterStackBrick', 'BasicRaster')"
>
>what is the problem? Thanks.
>
>On Thu, Mar 8, 2018 at 12:07 AM, lily li  wrote:
>
>> Hi all,
>>
>> I'm trying to add single points with known coordinates to a level
>plot,
>> but could not find the proper answer. I got to know that layer()
>function
>> is good for this, but I don't know which package is related to this
>> function. The source is here:
>>
>https://stackoverflow.com/questions/28597149/add-xy-points-to-raster-map-
>> generated-by-levelplot
>>
>> but my question is a little different as I know the coordinates of
>the
>> single point, rather than a range. Thanks for any help you could
>provide.
>>
>
>   [[alternative HTML version deleted]]
>
>__
>R-help@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.

__
R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.

Re: [R] add single points to a level plot

[Eric Berger]

You need to load the package 'rasterVis'

> library(rasterVis)

HTH,
Eric


On Thu, Mar 8, 2018 at 5:11 PM, lily li  wrote:

> Hi all,
>
> I ran the code:
> > s <- stack(replicate(2, raster(matrix(runif(100), 10
> > xy <- data.frame(coordinates(sampleRandom(s, 10, sp=TRUE)),
> +  z1=runif(10), z2=runif(10))
> > levelplot(s, margin=FALSE, at=seq(0, 1, 0.05)) +
> +   layer(sp.points(xy, pch=ifelse(pts$z1 < 0.5, 2, 3), cex=2, col=1),
> columns=1) +
> +   layer(sp.points(xy, pch=ifelse(pts$z2 < 0.5, 2, 3), cex=2, col=1),
> columns=2)
>
> And got the error:
> Error in UseMethod("levelplot") :
>   no applicable method for 'levelplot' applied to an object of class
> "c('RasterStack', 'Raster', 'RasterStackBrick', 'BasicRaster')"
>
> what is the problem? Thanks.
>
> On Thu, Mar 8, 2018 at 12:07 AM, lily li  wrote:
>
> > Hi all,
> >
> > I'm trying to add single points with known coordinates to a level plot,
> > but could not find the proper answer. I got to know that layer() function
> > is good for this, but I don't know which package is related to this
> > function. The source is here:
> > https://stackoverflow.com/questions/28597149/add-xy-
> points-to-raster-map-
> > generated-by-levelplot
> >
> > but my question is a little different as I know the coordinates of the
> > single point, rather than a range. Thanks for any help you could provide.
> >
>
> [[alternative HTML version deleted]]
>
> __
> R-help@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@r-project.org mailing list -- To UNSUBSCRIBE and more, see
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.

Re: [R] add single points to a level plot

[lily li]

Hi all,

I ran the code:
> s <- stack(replicate(2, raster(matrix(runif(100), 10
> xy <- data.frame(coordinates(sampleRandom(s, 10, sp=TRUE)),
+  z1=runif(10), z2=runif(10))
> levelplot(s, margin=FALSE, at=seq(0, 1, 0.05)) +
+   layer(sp.points(xy, pch=ifelse(pts$z1 < 0.5, 2, 3), cex=2, col=1),
columns=1) +
+   layer(sp.points(xy, pch=ifelse(pts$z2 < 0.5, 2, 3), cex=2, col=1),
columns=2)

And got the error:
Error in UseMethod("levelplot") :
  no applicable method for 'levelplot' applied to an object of class
"c('RasterStack', 'Raster', 'RasterStackBrick', 'BasicRaster')"

what is the problem? Thanks.

On Thu, Mar 8, 2018 at 12:07 AM, lily li  wrote:

> Hi all,
>
> I'm trying to add single points with known coordinates to a level plot,
> but could not find the proper answer. I got to know that layer() function
> is good for this, but I don't know which package is related to this
> function. The source is here:
> https://stackoverflow.com/questions/28597149/add-xy-points-to-raster-map-
> generated-by-levelplot
>
> but my question is a little different as I know the coordinates of the
> single point, rather than a range. Thanks for any help you could provide.
>

[[alternative HTML version deleted]]

__
R-help@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.