similar to: computing distance in miles or km between 2 street addresses

Phil, If you have only a list of addresses and nothing else - i have to recognize i am "lost". But if you have more info you can use a GIS software and it will calculate your distance automatically for all your addresses. To have your distance in miles or Km you need to have a projection in your data which will establish your units. The very basic principle is that for each address

Hi R-People: I use 2 machines: a machine with a Windows XP operating system, and another with a Linux Ubuntu OS. I transport my code between these 2 machines. However, pathnames to data files always need to be "adjusted" to account for the OS that I'm working on. Here is my question: How do I write code to detect whether I'm using the XP or the Linux machine? If I knew

Hi: I have a matrix, named "mat," of numeric values that are in days since Jan 1, 1960. I want to convert them Date class values so that I can do things like seq( value , len=10, by="1 week") where "value" is any of the matrix elements. How do I do this? Please reply to: philipsmith at alumni.albany.edu Thanks! Phil Smith Duluth, GA

Hi, I''m using mapstraction with Google Maps api and I want to use routes. As of now, mapstraction only supports mapquest API to do this, so can I use the underlying googlemaps API to do this, while using mapstraction? If yes, how? Btw, mapquest route demo doesn''t work (Error: MQA is not defined / Source File: http://mapstraction.com/mapstraction-js/mapstraction.js / Line: 621)

Hi R Community: I want to take the difference in two dates: dt2 - dt1. But, I want the answer in months between those 2 dates. Can you advise me? Please respond to: pzs6 at cdc.gov Thank you! Phil Smith Centers for Disease Control and Prevention

Can anyone please hazard a guess at an estimate for a poor old squirrel hunter with a Very Very Dumb Question? Is wine likely to be able to install and run any of the proprietary GPS-interfacing topo map programs (DeLorme, Garmin, Mapquest, et al.) at any roughly predictable future date? The season opens in three weeks, my GPS (Garmin's etrex vista) is full -- and it still contains road maps

hey guys, I am trying to add mapping functionality to the example application from the book. The mapping (mapquest''s openAPI) uses javascript to generate maps. So I was thinking that I''ll have a partial view to which i''ll pass the addresses and it''ll plot them. I''ll then put the partial view in the main view. Is this a good way of implementing this

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On Sun, 28 Jan 2018, phil at philipsmith.ca wrote: > I have a data set with quarterly time series for several variables. The > time index is recorded in column 1 of the dataframe as a character > vector "Q1 1961", "Q2 1961","Q3 1961", "Q4 1961", "Q1 1962", etc. I want > to produce line plots with ggplot2, but it seems I need to

Using Achim's d this also works to generate z where FUN is a function used to transform the index column and format is also passed to FUN. z <- read.zoo(d, index = "time", FUN = as.yearqtr, format = "Q%q %Y") On Sun, Jan 28, 2018 at 4:53 PM, Achim Zeileis <Achim.Zeileis at uibk.ac.at> wrote: > On Sun, 28 Jan 2018, phil at philipsmith.ca wrote: > >> I

Several map providers have functions to pan to a location, as opposed to the direct setCenter call. Panning animates the move from one point to another. To implement this in mapstraction, I created a panCenter function. I don''t know how to go about committing the change to svn, or who decides whether my naming convention is worthy, but I thought I''d share the function

This is a patch we had to implement to use custom icons in mapquest. We needed to use a custom icon size and offset, so I added a small bit of code to handle this. We use MapQuest API v5.3. That may make this not work in all cases, I know the icon stuff changed somewhat between 5.2&5.3. To make work on MapQuests 5.2 API, I *think* would only take the following conversions. 1) MapIcon

Dear R-Users, I have the CDF of a discrete probability distribution. I now observe a change in this CDF at one point. I would like to find a new CDF such that it has the shortest Kullback-Leibler Distance to the original CDF and respects my new observation. Is there an existing package in R which will let me do this ? Google searches based on entropy revealed nothing. Kind regards, Tolga

Hi--I'm trying to run a Ripley's K analysis on a point pattern within a window of 1 square km. The maximum distance I want to use is the diagonal of the window, around 1400m, run in 50m increments. The function defaults to a 250m maximum--I thought this was simply the way I had plotted it, but when I exported the data there was nothing over 250m. I've looked into seq and ginterval,

Any reason why there''s no closeBubble function in Mapstraction? It''s supported by at least Yahoo (closeSmartWindow) and Google (closeInfoWindow). A related issue, but not as clear-cut: a bubble closed event. I know Google supports this, but I haven''t investigated further. --Adam

I''ve been looking for any modules/tools that are available for using the google maps api in rails. I found a couple of quick examples, but not much more. If anyone knows of good sites that cover using google maps api in rails please post it here:) Chris

Author: robert.moran Date: Sun May 31 11:13:23 2009 New Revision: 11 Modified: trunk/source/mxn.core.js trunk/source/mxn.js trunk/source/mxn.yahoo.core.js trunk/tests/index.htm Log: Added functionality to automatically load scripts needed. Allowed mapstraction default constructor to have provider omitted (will use first loaded provider). Minor change to yahoo implementation -

Hi, I have a question about computing shortest Euclidean distances between two data frames of spatial points... I have 2 dataframes (not yet converted to spatial class) >Sewers<-data.frame(x=c(10,20,35,50),y=c(100,150,200,300)) >transect <- data.frame(x=seq(from=0, to=50, by=1),y=seq(from=100, to=150, by=1)) I would like to be able to compute the shortest distance from the

Hi to all! Well, I''ve been trying to find a solution to route using known LatLng points - I already have the location position, all I needed was the actual route, so I''ve put together an addition to the "mapstraction-route.js". I''ve listed it below, so maybe it would not be a bad idea to merge it to the trunk... Also, I have a few other questions regarding