Hi,
Recently, I used igraph with spatial objects.
Once you have the coordinates of the nodes composing an edge, you can
transform it into a spatiallines object with this function :
makeLineFromCoords <- function(coords, i) {
Sl1 = Line(coords)
S1 = Lines(list(Sl1), ID=as.character(i))
Sl =
For curved lines, you could use the bezier library.
In this example, I generate a bezier line with random curvature within a
specific range :
from = mst.bh[i, 1] # coordinates of the source node
to = mst.bh[i, 2] # coordinates of the target node
d = sqrt((coords[from, 1] - coords[to, 1])^2 + (co
In this example, I generate a bezier line with random curvature within a
specific range :
from = mst.bh[i, 1] # coordinates of the source node
to = mst.bh[i, 2] # coordinates of the target node
d = sqrt((coords[from, 1] - coords[to, 1])^2 + (coords[from, 2] -
coords[to, 2])^2) # the distance bewt
Thanks,
Do you know why your solution does not work on a raster layer?
i.e.
require(rgdal)
require(raster)
require(mapmisc)
require(TeachingDemos)
nicabg2 <- openmap(nica,path="cartodb")
plot(nicabg2)
subplot({
plot(world, col=1, xlim=c(-120, 30), ylim=c(-30, 40))
box()
points(coordi
Hello all,
Apologies in advance if this request is not properly posed, this is my
first post. I want to get r squared (i think) for the following data:
- land values (X) for properties across multiple years
- geojson of particular regions (ZONE) and the year they were established
I want to show
Is there any way to download the raster layers
of openmap() with an increased resolution?
I find the quality of the labels very low,
or am I doing something wrong? i.e.
require(raster)
require(mapmisc)
nica <- getData("GADM", country="NIC", level=0)
nicabg <- openmap(nica, path="landscape")
plot(n
Hello all, my first post here!
mapmisc (1.4.8 from r-forge) now allows
require(rgdal)
require(raster)
require(mapmisc)
nica <- getData("GADM", country="NIC", level=0)
nicabg <- openmap(nica, path="landscape")
map.new(nicabg, 0.7,mar=c(2, 2, 2, 0) + 0.1)
plot(nicabg,axes=TRUE)
plot(nica,add=TRUE
On Thu, Feb 25, 2016 at 5:11 PM, Agustin Lobo wrote:
> Is there any way to download the raster layers
> of openmap() with an increased resolution?
> I find the quality of the labels very low,
> or am I doing something wrong? i.e.
>
> require(raster)
> require(mapmisc)
> nica <- getData("GADM", cou
Hi,
if you just want to map the data, mapview could be an option that among
others avoid the pixel stretching.
require(mapview)
require(raster)
nica <- getData("GADM", country="NIC", level=0)
mapview(nica)
mapview(nica,zcol = "POP2000", color = "#FFA500", lwd= 5, alpha.regions
= 0.4)
che
On Mon, 22 Feb 2016 7:30 pm Michael Sumner wrote:
> On Mon, 22 Feb 2016 at 19:13 Luca Candeloro
> wrote:
>
>> Dear all,
>> plotting graphs with given vertex coordinates is possible inside igraph
>> plot function.
>> I would like to transform vilsualized edges into SpatialLinesDataFrame, so
>> th
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