Displaying 20 results from an estimated 10000 matches similar to: "lines()"
2012 Jun 05
2
Converiting longitude/latitude to utm
Dear all,
I have been trying to convert coordinates from longitude/latitude to utm
but I got an error. As soon as the longitude coordinate is greater than 90,
I get the folloowing error message: "error in pj_transform: latitude or
longitude exceeded limits"
Here is what I did:
SP<-SpatialPoints(cbind(126.59,-14.30),proj4string=CRS("+proj=longlat"))
2010 Oct 10
2
Mapping the coordinates!
Hello,
I have a series of coordinates
(latitudes and longitudes) each one/several associated to a code
(from 1 to 28). I used function points (latitude, longitudes) to
transfer them to a per-prepared map.
1- I wonder how I might be able to
automatically add codes (1-28) to the map too?
2-Moreover, mostly there are a few
codes from the identical coordinates. What is the function to
2012 Nov 20
2
[lattice] how to overlay a geographical map on a levelplot?
r-help lattice adepts:
I have a question which is somewhat geospatial, so I posted to r-sig-geo
rather than here:
https://stat.ethz.ch/pipermail/r-sig-geo/2012-November/016757.html
> summary: How to overlay a geographical map on each panel in a lattice
> (or Trellis), e.g., of levelplot's? Note I am not inquiring about
> creating choropleth maps[,]
which Sarkar 2008 covers quite
2003 Jul 30
3
nested for() loops for returning a nearest point
I'm trying to do the following:
For each ordered pair of a data frame (D1) containing longitudes and
latitudes and unique point IDs, calculate the distance to every point in
another data frame (D2) also containing longitudes, latitudes and point
IDs, and return to a new variable in D1 the point ID of the nearest
element of D2.
Dramatis personae (mostly self-explanatory):
D1$long
2002 Oct 02
6
help to make a map on R
Hi all,
I need a little help for construct an state's map on R.
The first problem is to get the data.
I have a datafile of longitude and latitude in the follow format:
trajectory latitude longtude
T -22.045618 -51.287056
T -22.067078 -51.265888
T -22.067039 -51.207249
T -22.059690 -48.089695
T -22.075529 -48.074608
T -22.072460 -48.044472
T -22.062767 -48.298473
T -22.077349
2006 Apr 04
1
imaging and contouring
Dear R'Helpers and Colleagues,
I have looked in the documentation, asked to some colleagues in the
lab, but was unable to solve the following difficulty.
I am running R on a iMac G5 with OS 10.4.
The file below (73 rows x 144 col) shows the values of a climatic
index on the globe with a grid of 2,5 ? x 2,5 ? (NA = no value):
?
With image() and map() and running the following
2008 Feb 18
2
how to plot image() without painting a map (the background)
Hello,
I'm trying to plot dayly evolution of the temperature over France from
Global Forecast System files ("I'm trying" is the right expression...).
akilonlat03 is the temperature for different latitudes and longitudes ? 3
o'clock.
akilonlat06 is the temperature for different latitudes and longitudes ? 6
o'clock.
I would like to plot akilonlat03 and then akilonlat06
2006 Jul 19
5
Model Validation - with a twist
I''m stuck in a catch-22 type problem. I have an insert form for a table
that uses the validation in the model. i.e. When you click submit on the
form and haven''t filled in the required fields then you get the nice
rails error messages saying "field can not be blank". This works fine
until I introduce some more logic.
What I''m trying to do is to validate
2024 Jan 30
2
Basic astronomy package recommendation wanted.
On Tue, 30 Jan 2024, Richard O'Keefe writes:
> Given
> - UTC timestamp
> - a location (latitude,longitude,elevation)
> I want to know
> - the sun angles
> - the moon angles
> - the phase of the moon.
> I looked on CRAN for astronomy, but didn't notice anything that seems
> to offer what I want. I could try coding these functions myself, but
> "if
2012 Sep 24
2
Latitude Longitude to SPDF
Hi Team,
Need your guidance in building SPDF objects from Latitude, Longitude
Information available.
I am using package "plotGoogleMaps" which is really awesome but it requires
SPDF objects to build the maps.
I have a data frame which have Latitude and Longitude information and
wanted to convert it in SPDF for making maps.
Please help me to find suitable package or function to convert
2009 Nov 19
2
plot filled.contour over continent map
Dear all,
As a newbie in R I would like to do the following (simple?) thing:
to plot a filled.contour plot over a map showing country boundaries (e.g. for Europe)
What i do is:
map('worldHires',xlim=c(-10,40),ylim=c(35,70),boundary = TRUE,border=0.1)
map.axes()
filled.contour(mslp, zlim=c(1000,1020),color.palette = colorRampPalette(c("blue", "white",
2009 Jan 10
1
Bubble plot on shapefile - projection issues?
Dear R help list,
?
I am working on some data from a study on the habitat use and movement patterns of fish using a marine protected area in Hawaii.? We have a number of acoustic receivers in a MPA, and any time a tagged fish passes within range it records the date and time of detection.? I am trying to make bubble plots?showing the number of detections for each fish at each receiver.? I have been
2007 Jan 31
6
GeoQuery with acts_as_ferret involved
So, I''m working on a search engine of sorts that restricts results to
your local area. I can successfully return all entries within 15 miles
of a particular point, and I can successfully return all entries that
match a search query, but I''m having trouble combining the two together
and doing pagination on them.
Basically, for the range query, you do a SQL query that returns all
2005 Jun 14
7
OT: US city proximity search
Does anyone know where I might be able to download/purchase a database of US
cities and their longitude/latitude coordinates? I''d like to provide a
search option on a website that allows users to search by city but include
cities in the surrounding area.
Thanks,
Carl Youngblood
_______________________________________________
Rails mailing list
2016 Dec 15
2
OT: Blank mails from this list
On 12/15/2016 05:13 AM, Sorin Srbu wrote:
>> -----Original Message-----
>> From: CentOS [mailto:centos-bounces at centos.org] On Behalf Of
>> geo.inbox.ignored
>> Sent: den 15 december 2016 11:28
>> To: centos at centos.org
>> Subject: Re: [CentOS] OT: Blank mails from this list
>>
>>
>>
>>> Ok, can view the source now.
>>>
2009 Jun 21
1
Problems with bilinear interpolation of a grid
Dear all,
I'm having trouble interpolating a number of gridded datasets that I have. I'm quite new to R so any help/advice that can be offered would be much appreciated!
Firstly I'll describe my dataset. The data is a grid of the planet at 1 degree spatial resolution, with each grid cell containing a value describing a particular variable (e.g. population density) for coordinate
2009 Jun 29
2
How to select partially (not completely) unique rows?
Dear R-helpers,
I know how to use unique to select unique rows, e.g.
unique.rows<-unique(dataframe)
but I would like to select those rows that are unique only only TWO of my
dataframe's columns (so, two rows with the same value on these two columns
would not be kept, even if they had different values in other columns).
For example, I have a dataframe with 10 columns, two of which are
2011 Aug 04
3
persp()
Hello
I am trying to draw a basic black and white map of two European countries.
After searching some key words in google and reading many pages I arrived to the conclusion that persp() could be used to draw that map.
I have prepared three small example files, which are supposed to be the files required for running that function.
xvector is a vector with the longitudes
yvector is a vector with
2020 Oct 22
0
3d plot of earth with cut
1. Have you looked here:
https://cran.r-project.org/web/views/Spatial.html
(I assume you have done some web searches on possible terms like "3D Earth
Data R" or whatever)
2. You might try posting on the r-sig-geo list rather than here, where
relative expertise may more likely be available.
Cheers,
Bert Gunter
"The trouble with having an open mind is that people keep coming along
2012 Jul 18
2
plotting points to a map
Dear R users,
I have a city map in shape file (polygon). I also have some points that I
hope to plot them to the city map. The only information I have about those
points are their relative longitude and latitude to the city center by
miles. Is there a way that R can help me to do this? Thanks.
Gary
[[alternative HTML version deleted]]