similar to: plotting points to a map

Hi list. I would like to know how do I insert a North arrow, stored as a png file in my computer, in a map? I found lots of post asking similar things, one of them mentioned the pixmap package. The map was done using map() and shapefiles (the code is below). I’m using the pixmap () and addlogo() functions. Well I can import the png with pixmap() function (I guess, once there’s no error message),

Dear R users, I have created a Loess surface in R, in which x is relative longitude by miles, y is relative latitude by miles, and z is population density at the neighborhood level. The purpose is to identify some population centers in the region. I'm wondering if there is a way to determine the coordinates (x,y) of each center, so I can know exactly where they are. Let me use the

Hi, I'm trying to plot some data (z) that is linked to lat&long coordinates (x&y). These coordinates are not however on a regular grid. I also have some shapefiles on which I would like to overlay the data. I can plot the shapefiles (country/city outlines) and overplot the data, but only using quilt.plot because I otherwise always get the error message that 'Error in

Dear All, This is probably a very basic question but: I have plotted a map of the Barents Sea and surrounding coastline using: map('worldHires',ylim=c(50,85),xlim=c(5,65),fill=T,resolution=0) map.axes() map.scale(x=30,metric=T) Next, I imported a shapefile with depth contours for the sea: contours<-read.shape("D://My Documents/BarentsSea.shp",dbf.data=T) (This is in

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

hi R-users: I have some data related with geographical information. I wonder how to plot some data (in contour,shaded or scatter) on a map. Could anyone tell me which package or reference or examples I can learn ? thank you . -- TANG Jie Email: totangjie@gmail.com [[alternative HTML version deleted]]

Hi, is there a function in R to convert data read with read.shape and which is originally in UTM coordinates into longitude / latitude coordinates? I found the convUL() function from the PBSmapping package but I have no idea how I could apply that to the read.shape object. Many thanks, Werner __________________________________________________ Do sragenden Schutz gegen Massenmails.

I have drawn a map in which the X and Y axes are latitude and longitude. Now I need to draw one circle on the map - the center is a point with specific latitude and longitude, but the challenge is that the radius is in miles. Is there a way to do this? I'd very much appreciate your response. XM

Does anyone have any recommendations for working with zip code distance ranges? I need to calculate the distances between US zip codes. Thanks! -------------- next part -------------- An HTML attachment was scrubbed... URL: http://wrath.rubyonrails.org/pipermail/rails/attachments/20060711/f133d7de/attachment-0001.html

A few years back, I wrote some code to plot maps with the maptools package. Now I am trying to reproduce my results, only to find out that maptools has been updated and my code no longer works. I've been able to fix the first part of it by forcing spb <- maptools:::read.shape("/home/sasha/Documents/maps/spb.shp") (as read.shape has been deprecated) but now when I do plot(spb,

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

Hey, Does anybody know of a good Geocode library for Ruby, similar to Perl''s Geocode::Postal, that i could use in my rail app? I need to do some "within 5 miles" calculations of zipcodes and i dont have a nice ruby (or gem) utility to do it. any help would be appreciated. thanks adam _______________________________________________ Rails mailing list

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

I''m currently planning a social app in Rails that relies on being able to see how far you are from everyone else. It''s my intention to store rough geo-coordinates as part of the sign up process. My intention is to capture their zipcode or postal code, and then be able to query a webservice once for that data. It''s also possible that there might be a database or even

#################################################################################### We have used maptools to construct state, county, township, census-tract, and zipcode level R maps with an Albers Conical Equal Area projection. We would like to be able to plot the location of weather stations or other point locations on the maps. The data the point locations are in latitude-longitude units

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i've search the email archives, searched the documention of various map packages and done an R-site search, but have been unable to find direct resources for creating maps of the US that are colored or annotated or ... by zipcode data. For example, create a map of the US and color each zipcode region by its population using two vectors z,p containing the zipcode and population,

Is there any package that I could use for zipcode search. I want to display schools that near a particular zipcode. I have no idea how to do this. It will be great if anyone can point me where I could find info -- Rgds, --Siva Jagadeesan http://www.varcasa.com/ Education Through Collabration -------------- next part -------------- An HTML attachment was scrubbed... URL:

Dear all, 1. How can I compute the intersecting area between 2 polygons ? 2. I have polygons with coordinates in decimal degrees (i.e. 13 deg 30 min = 13.5 decimal degrees). I want to compute their area and get the results in square meters or square kiometers. Can anyone give me a conversion coefficient or a pointer where I can find this information (sorry for this off topic question) ? Thanks

> > I might as well add to the offtopic thread... why are natuical miles longer than "regular" miles? Andrew A nautical mile is 1 minute of latitude. -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.digium.com/pipermail/asterisk-users/attachments/20040112/6658a905/attachment.htm