The warnings are (probably) harmless, and is because NumericExtensions extends some functions that was added to Julia after 0.2 was released. Currently we have some problems with packages that does not properly work with the 0.2 version of Julia. The 0.3 version is not far from being released, so you should be fine upgrading to the prerelease versions.
I hope someone else answers the Distance.jl related questions. kl. 16:22:58 UTC+2 onsdag 2. juli 2014 skrev Donald Lacombe følgende: > > Greetings! > > I am a new Julia user and have the following issue. I am writing code to > calculate a knn spatial weight matrix to estimate a spatial econometric > model. Using the MATLAB code from Jim LeSage's Econometrics Toolbox, I > converted that code into Julia as follows: > > xc = rand(8); > > yc = rand(8); > > n = length(xc); > > k = 2; > > distance = zeros(n); > > nnlist = zeros(n,k); > > tempw = zeros(n,n); > > > for i=1:n; > > xi = xc[i,1]; > > yi = yc[i,1]; > > distance = (xc - xi*ones(n)).^2 + (yc - yi*ones(n)).^2 > > temp = sortperm(distance) > > nnlist[i,1:k] = temp[2:k+1,1]'; > > end > > > for i=1:n > > tempw[i,nnlist[i,:]] = 1; > > end > > > W = tempw/k; > > > This is a "toy" example and I was wondering if I can use the Distance package > to simplify the distance = (xc - xi*ones(n)).^2 + (yc - yi*ones(n)).^2 > formula. I tried using the pairwise option like so: > > > R = pairwise(Euclidean(),xc,yc) but received the following message: > > > R = pairwise(Euclidean(),xc,yc) > > MethodError(pairwise,(Euclidean(),[0.05961066617957589,0.018538084399339905,0.39282193332224646,0.7006919213133509,0.5099836895629475,0.8448415935222402,0.2985674570217043,0.8022287058003177],[0.5808687231553928,0.9655167324458858,0.026306556019434435,0.6565373244339141,0.11927452074471412,0.11873635450496622,0.6271632933770979,0.7081439899673692])) > > I'd like to be able to utilize the Distance package but am a bit stumped. The > code as written works but it's bugging me that I cannot seem to get the above > command to work. I also get the following error when loading Distance: > > > using Distance > > Warning: could not import Base.foldl into NumericExtensions > > Warning: could not import Base.foldr into NumericExtensions > > Warning: could not import Base.sum! into NumericExtensions > > Warning: could not import Base.maximum! into NumericExtensions > > Warning: could not import Base.minimum! into NumericExtensions > > > If there is anyone who can address this I'd greatly appreciate it. > Incidentally, the help on this group is one reason I am making the change. > > > Don > > > > >
