Displaying 20 results from an estimated 2000 matches similar to: "mask and reverse the selection"
2009 Oct 19
1
Spatstat: xy binary data into mask type to use in owin(mask=)
Dear users,
I am trying to export polygons from Arcmap into Spatstat to run some
simulations using functions available in Spatstat package.
One particular area to be exported is formed by a number of polygons
defining the external boundaries of the area (as a groups of islands) and a
number of polygons inside the previous ones, as ?holes? not to be
considered as part of the area.
I have
2017 Jun 01
3
[spatstat] Convert shapefile to pixel image
Dear all,
I am currently working with the spatstat package, using windows and pixel images.
First:
My aim is to transform a shapefile (see attached) into a pixel image.
My idea is to start transforming the shapefile into a Spatial Polygon file:
x <- readShapeSpatial("200001441.shp")
y <- as(x, "SpatialPolygons")
z <- as.owin(y)
Given z, I want to identify each
2013 Sep 19
3
How do I ensure that the polygon in spatstat::owin(poly=<polygon>) does not have “negative area”
I am a new user of the R spatstat package and am having problems creating a
polygonal observation window with owin(). Code follows:
library("maps")
library ("sp")`
library("spatstat")
mass.map <- map("state", "massachusetts:main", fill=T) # This returns
a data frame includding x and y components that form a polygon of
massachusetts mainland`
2019 Oct 21
2
How to create vector pointer type?
Hello,
Say the original type is Integer i16*, I want to create a v16i16* type to replace it.
static Type *getVectorPtr(Type *Ty) {
PointerType *PointerTy = dyn_cast<PointerType>(Ty);
assert(PointerTy && "PointerType expected");
unsigned addSpace = PointerTy->getAddressSpace();
2017 Jun 01
0
[spatstat] Convert shapefile to pixel image
On 02/06/17 01:17, Lluis.Hurtado at uv.es wrote:
> Dear all,
>
> I am currently working with the spatstat package, using windows and pixel images.
>
> First:
>
> My aim is to transform a shapefile (see attached) into a pixel image.
>
> My idea is to start transforming the shapefile into a Spatial Polygon file:
>
> x <-
2007 Apr 14
2
Samba -> WinXP: slow transfers, partial solution
Hello All,
I'm running Samba 3.0.24 as PDC and file server on Gentoo Linux,
AMD64, 2.6.19 kernel, 100MBit/s network, and experience quite slow
file transfers from Samba to WinXP SP2 clients: the speed is varying,
but is about 1-2Mb/s at best.
I spent quite some time investigating the issue, here are the
intermediate results:
1) This happens only when transferring _from_ _Samba_ to
2003 Dec 01
1
Re: using shapefile as owin
My sincerest apologies, as this is a very elementary problem, but I have
searched through archives and FAQs and on the web, and I am at the end of my
own resources.
I need to do analysis of a spatial point process occuring with four
counties, using spatstat. I've had no trouble importing the shapefiles, but
I can't seem to figure out what I need to do in order to use the boundary as
an
2010 May 06
1
extracting coordinates from SpatialPolygonsDataFrame using slot functions
In converting some older code:
## builds an OWIN to generate a set of points on a grid within the OWIN object:
bdry <- read.shape( "../../data/boundary.shp" )
outline.verts <- bdry$Shapes[[2]]$verts[1:bdry$Shapes[[2]]$Pstart[2],]
outline.order <- nrow( outline.verts ) : 2
bdry.poly <- vector( 2, mode="list" )
bdry.poly[[1]] <- list(
2008 Jun 02
1
Help : R-packages : Problems loading package fSeries
Hi.
I am trying to load the package fSeries, in order to load the package
fGarch after.
However, it says the following message.
> local({pkg <- select.list(sort(.packages(all.available = TRUE)))
+ if(nchar(pkg)) library(pkg, character.only=TRUE)})
Loading required package: fBasics (Error : ... infinite recursion)
Loading required package: fImport
Loading required package: fSeries
Loading
2012 Mar 16
1
Spatstat - coordinates in observation window
Dear R users,
I wish to run spatial point pattern analysis (e.g. pair correlation function, mark correlation function) for which I need to create an observation window (window=owin) from which the spatial analysis is generated. The command I used to create this observation window as follows:
X1<- ppp(x, y, window=owin(c(80.58,144.96),c(101.06,165.13)),
2013 Jan 29
1
points rejected as lying outside the specified window
Hello,
I am using the following code to create ppp files from csv data and map shape files, but I am getting some errors which I have been unable to fix by searching them online:
library(spatstat)
library(maps)
library(maptools)
NYC2<-readShapePoly("nybb.shp") # this is a map of the NYC boroughs without waterways and no census tract divisions (but it does include lines separating
2011 Sep 23
1
spatstat => owin + image
Dear Community
I am at my wits end and seek advice.
My wish is to plot coordinates (x,y in WGS84_UMTS for the ones interested)
of sampling points.
This I can do by the standard spatstat prodcedure via owin. I then try to
add an image, which is
a map/satellite photo in the background.
Firstly
Problem: With the current code, I can not get the edges of the image to
match the boarders of the plot
2019 Nov 25
2
Tablegen PAT limitation?
You are welcome.
I changed the pattern, the same old error pop up again, crash in the same place.
Type set is empty for each HW mode:
possible type contradiction in the pattern below (use -print-records with llvm-tblgen to see all expanded records).
vtInt: (vt:{ *:[Other] })
UNREACHABLE executed at /home/nancy/work/rpp_clang/llvm/utils/TableGen/CodeGenDAGPatterns.cpp:824!
2005 Sep 08
1
Using R map data to determine associated state for a coordinate?
Hi!
I have no idea if this is maybe an easy task utilizing
R since I read there is
geographical map data in some package:
I have a huge number of geographical points with their
coordinates in Germany.
Now I want to determine for each point in which
"Bundesland" = state it is located.
Can anybody tell me if this is doable relatively easy
in R and if so give me
some hints or links
2013 Mar 21
3
spatstat error
Good day
Im working with some coordinates, and want to create a PPP object, I found
that error:
> Datos=read.table("puntos_texto.txt",dec=".",sep="\t",header=T)
> summary(Datos)
id y x
Min. : 1.0 Min. :1013581 Min. :1177842
1st Qu.: 821.2 1st Qu.:1014442 1st Qu.:1179658
Median
2008 Dec 12
1
Support vector model?
Dear All,
Apologies for sending this email to both list, but at this point I'm not
sure which one could help me the most.
I have 4 sets of data, 1 test and 3 different sets of controls.
The measurements are binary, with a matrix of 0 and 1
I'm measuring across time (rows, ~815) the behaviour of organelles in
the cell by microscopy in response to different stimuli (several
measurements
2012 Nov 05
1
Problem with polygon vertices
I am building a mask with
area.urb.sp.W <- as(area.urb.sp, "owin")
and got the message
Erro em owin(poly = opls) :
Polygon data contain duplicated vertices, self-intersection and overlaps
between polygons
how can I solve this problem in R?
many thanks
IVAN
[[alternative HTML version deleted]]
2011 Nov 02
2
Sum with condition
I guess my problem is simple for most of you but I am new with R and I need
some help,
I have a dataframe :
CELLCD AreaProtected
8928 52.39389
8928 41.91511
8929 21.21975
8929 63.65925
8930 26.08547
8930 14.04602
I wouldlike to sum the AreaProtected if it is the same CELLCD in another
column :
CELLCD AreaProtected SumAreaProtected
8928
2019 Nov 22
2
Tablegen PAT limitation?
def STOREbos { // InstructionEncoding Instruction RPPInst RPPInstMMEMrr
field bits<32> Inst = { 0, 0, 0, 1, rs1{2}, rs1{1}, rs1{0}, index{0}, 0, 0, 0, 1, 0, rbase{3}, rbase{2}, rbase{1}, rbase{0}, rbase{4}, roffset{4}, roffset{3}, roffset{2}, roffset{1}, roffset{0}, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
field bits<32> SoftFail = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
2012 Jan 12
2
Points inside a polygon
I have a list of bounds for a series of polygons. I do understand the
formula to determine whether point i is within polygon X (X[x1] < i[x]
& X[x2] > i[x] & X[y1] < i[y] & X[y2] > i[y]), and I can apply this
throughout the dataset. However, this naive algorithm doesn't scale
very well. The data set contains 10,000 points consisting of (n,e)
pairs where I'm