On 17/08/14 01:57, Greg Snow wrote:
On Fri, Aug 15, 2014 at 4:06 PM, Rolf Turner wrote:
OTOH R is still lacking a mind_read() function so it probably
would NOT give you *exactly* what you want.
We can try the (very pre-alpha) esp package:
source('g:/R/esp/esp.R')
esp()
[1] "piccalilli cra
On Fri, Aug 15, 2014 at 4:06 PM, Rolf Turner wrote:
> OTOH R is still lacking a mind_read() function so it probably
> would NOT give you *exactly* what you want.
We can try the (very pre-alpha) esp package:
> source('g:/R/esp/esp.R')
> esp()
[1] "piccalilli crawlspace mole swarthy thunderhead f
On 16/08/14 11:01, David Winsemius wrote:
On Aug 15, 2014, at 3:11 PM, Rolf Turner wrote:
I tried RSiteSearch("convex hull") just now, as an experiment, and
it seemed to work just fine. I think that the Universe is picking
on Dave (instead of on me, for once!). :-)
RSiteSearch("conve
On Aug 15, 2014, at 3:11 PM, Rolf Turner wrote:
> On 16/08/14 05:10, Jeff Newmiller wrote:
>> I use RSiteSearch regularly with no problems. Perhaps I have just had
>> a lucky streak? I wonder what the odds are... :-)
>
>
>
>
>> On August 15, 2014 8:55:40 AM PDT, David Winsemius
>> wrote:
>>>
On 16/08/14 05:10, Jeff Newmiller wrote:
I use RSiteSearch regularly with no problems. Perhaps I have just had
a lucky streak? I wonder what the odds are... :-)
On August 15, 2014 8:55:40 AM PDT, David Winsemius
wrote:
On Aug 15, 2014, at 8:15 AM, Jeff Newmiller wrote:
Not really sure
On 16/08/14 02:51, Bob O'Hara wrote:
I've been struggling for half a day on what should be a simple problem...
I have a data frame of lat/long coordinates that describe a region, and I
want to draw a polygon around them so I can use that as a boundary (to be
thrown at INLA, but those details are
Hi Bob,
You probably want to have a look at the package alphahull.
Cheers,
Tsjerk
On Fri, Aug 15, 2014 at 5:25 PM, Clint Bowman wrote:
> Your question seems to need an answer to, "How do you find a convex hull
> on a sphere?" Google has many references.
>
> Clint BowmanI
I have been using a process like the following to create polygons that
(closely) surround a non-convex set of points.
buf1 <- gBuffer(tmpb.ne, width=bstart, byid=TRUE)
buf2 <- gUnaryUnion(buf1)
buf <- gBuffer(buf2, width=bshrink)
These functions are from the rgeos package. In my case, tmpb
I use RSiteSearch regularly with no problems. Perhaps I have just had a lucky
streak? I wonder what the odds are... :-)
---
Jeff NewmillerThe . . Go Live...
DCN:Basics: ##.#.
No wonder I didn't understand your constraints... you didn't state them. In
fact, I think you still haven't stated them. Perhaps you need a map outline?
Or, you could just create a polygon manually? Isocline of a two-D kernel
density estimate or kriging fit? Manually partition your data into reg
On Aug 15, 2014, at 8:15 AM, Jeff Newmiller wrote:
> Not really sure I understand your constraints, but perhaps
>
> RSiteSearch("convex hull ")
RSiteSearch has really been broken for some time now. (You get the headers but
the links are all broken. A more effective way of searching the existin
Your question seems to need an answer to, "How do you find a convex hull
on a sphere?" Google has many references.
Clint BowmanINTERNET: cl...@ecy.wa.gov
Air Quality Modeler INTERNET: cl...@math.utah.edu
Department of Ecology VOICE:
Unfortunately my region isn't convex, and I don't want to end up predicting
the distribution of a forest-dwelling bird in the Atlantic ocean...
Bob
On 15 August 2014 17:15, Jeff Newmiller wrote:
> Not really sure I understand your constraints, but perhaps
>
> RSiteSearch("convex hull ")
>
> mi
Not really sure I understand your constraints, but perhaps
RSiteSearch("convex hull ")
might help?
---
Jeff NewmillerThe . . Go Live...
DCN:Basics: ##.#. ##.#. Live Go
I've been struggling for half a day on what should be a simple problem...
I have a data frame of lat/long coordinates that describe a region, and I
want to draw a polygon around them so I can use that as a boundary (to be
thrown at INLA, but those details aren't important). The coordinates are
alm
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