Displaying 20 results from an estimated 4000 matches similar to: "x11() graphic device, displaying raster"
2012 Jan 27
1
Overimposing one map in ssplot onto another
Hello!
I have 2 maps - both created in ssplot and both identical in terms of
outline. Is there any way to superimpose Map1 (which has black borders
between Canadian provinces) onto Map2 (which is also a map of Canada)?
Thanks a lot for your hints!
Dimitri
### A. Reading in Canada data at the province and then at the county level:
library(raster)
getData('ISO3') # Canada's code is
2019 Jun 09
2
como graficar una coordenada en un mapa
Hola a todos.
Soy nuevo en R, estoy aprendiendo con tutoriales y lo hago sin un fin
comercial y/o laboral.
Necesito ayuda para mostrar un mapa y sobre ese mapa poner un punto dado
por una coordenada.
con esto consigo mostrar el mapa.
library(raster)
arg<-getData('GADM', country='ARG', level=0)
plot(arg)
En ese mapa quiero mostrar un punto que está en el sistema de
2012 Jun 14
3
mapa provincial de España con googleVis
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URL: <https://stat.ethz.ch/pipermail/r-help-es/attachments/20120614/518ed68f/attachment.html>
2012 Aug 13
1
Fine Tuning Country Map
Dear All,
Please see the short script at the end of the email, which I assembled
looking for bits and pieces on the web.
It essentially does what I need: it plots several countries as a
color-coded map.
I just would like to fine-tune a bit the final image, in particular
(1) Select my own colors for "painting" the countries (i.e. associate
manually a color to every level)
(2) Be
2016 Apr 06
1
Plotting data on a map
Hello,
I would like to generate a small map (say 10cm x 10cm) of France showing cumulative numbers by Distribution Center
stored in a database:
DISTRIBUTION_CENTER COUNT
Paris 122
Paris 3
Paris 21
Lyon 12
Lyon 4444
Lyon
2009 Feb 21
1
Extracting xy from raster based on raster value
I have a raster (which I called glc), which I read
into R as a raster with "raster.create.from.file" from the raster package (R-forge). Values in glc range between 1 and 27 (whole numbers only). I'd like to extract all cells with a value of 1 to create
a new raster with only the cells that have a value of 1, or to extract
the xy values of all raster cells with a value of 1. Could you
2018 Mar 19
1
Labelling a fortified GADM map plotted with ggplot and geom_map
I am having trouble getting data labels to display over the provinces in a GADM map of Canada.
Specifically, I need the variable "Number" from the data set "by_province", grouped by "region", to appear on the corresponding regions of the map.
The data set "by_province" looks like this:
long lat order hole piece region
2011 Jan 31
1
str() on raster objects fails for certain dimensions
Hi,
str() on raster objects fails for certain dimensions. For example:
> str(as.raster(0, nrow=1, ncol=100))
'raster' chr [1, 1:100] "#000000" "#000000" "#000000" "#000000" ...
> str(as.raster(0, nrow=1, ncol=101))
Error in `[.raster`(object, seq_len(max.len)) : subscript out of bounds
This seems to do with how str() and
2011 Dec 01
1
Raster manipulation in R
Hello everyone in the forum
For introducing myself I would say I have a basic knowledge of R.
Now I am intended to implement a flood algorithm using R. I have some MatLab
experience doing these, and as an example to explain more or less what I
want, I have a m code to calculate the slope from a Digital elevation model:
slope=zeros(row,col);
for i=2:row-1
for j=2:col-1
2013 Oct 24
1
Plot.raster hides the axis layer
Hi all,
I am trying to plot a raster object (I can explain why but the point is that it would be a raster objeçt)..
I have selected a small code to show you exactly the problem
require(raster)
test<-matrix(data=runif(10000),nrow=100)
m<-raster(test)
plot(m,axes="FALSE")
axis(1,at=c(0,1),labels=c("a","b")) # THIS DOES NOT CHANGE THE INVISIBLE AXIS WHILE
2020 Oct 31
2
raster::levels() not working in packaged function.
Apologies, I cannot see how to make a rero for this issue.
I have a function that uses levels(r) tor return the RAT of a raster "r"
when the function is sourced from a script
source(".\R\function.r")
it works fine.
when the function is built into a package and sourced from there
library(mypackage) using the same script file to make the package
levels(r)[[1]]
the same line
2013 Apr 24
2
How to make a raster image in R from my own data set
Hi R-user,
I was trying to make a raster map with WGS84 projection in R, but I could not make it. I found one data set in Google that data is almost the same format as of mine. I wanted to make a raster map of temperature with 1 degree spatial resolution for the global scale.
I could make it in GIS software but I do have many variables (to be many raster images) and ultimately I am importing them
2012 Oct 29
3
How can I map numbers to colours with raster?
This code will read binary file and display it as a map. may problem is that
this code is using a continuous colour scheme, even though I have discrete
data (which is a classification scheme). How can I map numbers to colours
with raster? Please
require(raster)
conne <- file("C:\\lai.bin", "rb")
sd<- readBin(conne, integer(), size=1, n=360*720, signed=F)
2010 Jan 16
1
"Too many raster images" in devPS.c
Hi,
I am finding the recently added [1] functionality of embedding raster
images into plots on R devices very useful! Thanks to Paul Murrell and
others for providing that. I noted that in
https://svn.r-project.org/R/trunk/src/library/grDevices/src/devPS.c
a macro is defined: #define MAX_RASTERS 64, and consequently, I get
Error in grid.Call.graphics("L_raster", x$raster, x$x, x$y,
2011 Jun 10
2
merge large number of raster objects
Hello,
I have a large number of raster objects in memory, with names RH100,
RH101, RH102, etc. (myobjects <- ls(pattern='^RH')).
These rasters are sections of a continuous map, and I would like to
combine them using the RasterObject merge tool in package 'raster.'
Merge expects an input list of raster objects (outmap<-merge(x, y, ...),
where x, y, and ... are raster
2008 Jun 17
6
Insert raster image into an R graphic
Dear useRs:
Is there a way to include a raster image (e.g., .gif, .jpg, .bmp) representing
a company logo, a school logo, etc. into an R graphic? For example, it would be
nice to be able to include the logo of the school into the charts that a
student produces for her dissertation. Similarly, while working on a
competitive analysis, it would be nice to be able to replace the names of the
2012 Mar 21
2
To overlay my raster and its boundary
Hi
I want to overlay my raster and its boundary which is a shapefile.
When I used thise code separately, all is ok:
# Open raster
>Image<-read.table("C:\\Users\\Documents\\Nouveau\\Frequence.txt",sep="",dec=",",header=TRUE)
>testo<-rasterFromXYZ(Image)
>plot(testo)
>testo2 <- aggregate(testo,fact=10, fun=mean)
>plot(testo2)
# open
2009 Apr 18
1
install raster package on ubuntu
Dear all,
I am running R 2.8.1. under ubuntu, and I need to install
the package "raster" but I get the following error:
> install.packages("raster")
Warning in install.packages("raster") :
argument 'lib' is missing: using '/usr/local/lib/R/site-library'
--- Please select a CRAN mirror for use in this session ---
Loading Tcl/Tk interface ... done
2013 Jan 29
2
Netcdf and Raster Package Questions, Need .asc File for GIS
Hello R-Group,
I am new working with netcdf files and the raster package in R.I am
trying to read in a netcdf file using the package "ncdf".I am able to
get the lat, lon and parameter I need and can plot using
fill.contour.Ultimately, I am trying to create a .asc file to reafd into
GIS.I am using the package "raster" to read the parameter.When I read in
with
2012 Nov 27
5
Predict function in Raster package
Hey,
I am having troubles using the 'predict' function with in the Raster
package. I am using pm<-predict(mm, predictors) where mm is the
mahalanobis distance and the predictors are a stack of 6 raster layers
containing environmental variables.
When I try to run the prediction I get the following warning message:
Warning message:
In layerNames(x): the layerNames function is