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and two more things to move
svn:r18564
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## Read data
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t <- read.table("exit-capacity.dat", header=TRUE)
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## Normalize columns
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t[,2] <- t[,2]/max(t[,2])*100
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t[,3] <- t[,3]/max(t[,3])*100
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## Remove uninteresting ports
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ports <- c(22, 25, 80, 119, 135, 443,
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563, 8080, 6667)
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t <- t[t$port %in% ports,]
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## Plot
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pdf("exit-capacity.pdf")
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par(las=1)
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col <- grey(c(1,4)/5)
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barplot(t(as.matrix(t[,2:3])), names=t$port,
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beside=TRUE, xlab="Port number",
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ylab="Exit capacity available (%)",
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col=col, cex.axis=0.8, cex.names=0.8)
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par(xpd=TRUE)
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legend(x="topright", legend=c("Nodes", "Bandwidth"),
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fill=col, bty="n", inset=c(-0.05,-0.15))
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dev.off()
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port numExits totalBandwidth
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21 115 39282983
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22 116 41341901
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25 5 1530934
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80 315 60290055
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119 16 13026366
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135 7 1709809
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443 326 60956345
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445 8 1730289
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563 102 24056338
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1314 307 55315711
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4661 7 1648369
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8080 307 55318361
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6667 116 41961767
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File diff suppressed because it is too large
Load Diff
File diff suppressed because it is too large
Load Diff
File diff suppressed because it is too large
Load Diff
File diff suppressed because it is too large
Load Diff
File diff suppressed because it is too large
Load Diff
File diff suppressed because it is too large
Load Diff
File diff suppressed because it is too large
Load Diff
File diff suppressed because it is too large
Load Diff
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## Load in data files
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t1 = read.table("opt_1e-6.pickle.dat", header=TRUE)
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t2 = read.table("opt_1e-3.pickle.dat", header=TRUE)
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t3 = read.table("opt_1e-1.pickle.dat", header=TRUE)
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t4 = read.table("opt_0.75.pickle.dat", header=TRUE)
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t5 = read.table("opt_0.5.pickle.dat", header=TRUE)
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t6 = read.table("opt_0.25.pickle.dat", header=TRUE)
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t7 = read.table("opt_0.1.pickle.dat", header=TRUE)
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tt = read.table("opt_tor.pickle.dat", header=TRUE)
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## Calculate selection probabilties that Tor uses
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o = t1$bw/sum(t1$bw)
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#plot(t1$bw, cumsum(t1$prob), col="red", type="l")
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#lines(t1$bw, cumsum(t2$prob), col="pink")
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#lines(t1$bw, cumsum(t3$prob), col="blue")
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#lines(t1$bw, cumsum(t4$prob), col="orange")
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#lines(t1$bw, cumsum(t5$prob), col="purple")
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#lines(t1$bw, cumsum(tt$prob))
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## Plot probabiltieis
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pdf("optimum-selection-probabilities.pdf")
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col <- rainbow(8)
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plot(t1$bw, t1$prob, col=col[1], type="b", ylim=c(0,0.035),xlab="Bandwidth (cells/s)",
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ylab="Selection probability", frame.plot=FALSE)
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lines(t1$bw, t2$prob, col=col[2], type="b")
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lines(t1$bw, t3$prob, col=col[3], type="b")
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lines(t1$bw, t4$prob, col=col[4], type="b")
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lines(t1$bw, t5$prob, col=col[5], type="b")
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## These are too messy
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##lines(t1$bw, t6$prob, col=col[6], type="b")
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##lines(t1$bw, t7$prob, col=col[7], type="b")
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lines(t1$bw, tt$prob,col=col[8], type="b")
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lines(t1$bw, o, type="l", lwd=2)
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## Annotate graph
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title(main="Optimum node selection probability")
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x <- rep(8254.383, 4)
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y <- c(0.03453717, 0.02553347, 0.02219589, 0.02048830)
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par(xpd=TRUE)
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text(x,y,c("50%", "75%", "90%", ">99%"), adj=c(0,0.5))
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dev.off()
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## Plot probabilities relative to what Tor does
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pdf("relative-selection-probabilities.pdf")
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plot(t1$bw, t1$prob-o, col=col[1], type="b", xlab="Bandwidth (cells/s)",
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ylab="Selection probability - Tor's selection probability", frame.plot=FALSE, ylim=c(-0.002,0.015))
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lines(t1$bw, t2$prob-o, col=col[2], type="b")
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lines(t1$bw, t3$prob-o, col=col[3], type="b")
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lines(t1$bw, t4$prob-o, col=col[4], type="b")
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lines(t1$bw, t5$prob-o, col=col[5], type="b")
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lines(t1$bw, tt$prob-o,col=col[8], type="b")
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lines(range(t1$bw), rep(0,2), lty=2)
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title(main="Selection probabilility compared to Tor")
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x <- rep(8111.669, 4)
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y <- c(1.396915e-02, 4.962766e-03, 1.635106e-03, 7.446809e-06)
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par(xpd=TRUE)
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text(x,y,c("50%", "75%", "90%", ">99%"), adj=c(0,0.5))
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dev.off()
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## The waiting time for a node (assuming no overloaded nodes)
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## x: 1/bandwidth
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## q: selection probability
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## L: network load
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wait <- function(x,q,L) {
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a <- q*L*x*x
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b <- 2*(1-q*x*L)
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return (x + a/b)
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}
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## The weighted wait time
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wwait <- function(x,q,L) {
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return (q*wait(x,q,L))
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}
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## Average latency, returning NA for infinite
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netLatency <- function(x, q, L) {
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if (any(x*q*L <0 | x*q*L >1)) {
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return (NA)
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} else {
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return (sum(wwait(x, q, L)))
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}
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}
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## Load in data files
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t1 <- read.table("opt_1e-6.pickle.dat", header=TRUE)
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t2 <- read.table("opt_1e-3.pickle.dat", header=TRUE)
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t3 <- read.table("opt_1e-1.pickle.dat", header=TRUE)
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t4 <- read.table("opt_0.75.pickle.dat", header=TRUE)
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t5 <- read.table("opt_0.5.pickle.dat", header=TRUE)
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t6 <- read.table("opt_0.25.pickle.dat", header=TRUE)
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t7 <- read.table("opt_0.1.pickle.dat", header=TRUE)
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tt <- read.table("opt_tor.pickle.dat", header=TRUE)
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## Node bandwidth and reciprocal
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bw <- t1$bw
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x <- 1/bw
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## Calculate network capcity
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capacity <- sum(bw)
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## Calculate selection probabilties that Tor uses
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torProb <- bw/sum(bw)
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## Load values to try
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varyLoad <- seq(0.01,0.93,0.01)
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latencyTor <- c()
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latency3 <- c()
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latency4 <- c()
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latency5 <- c()
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for (L in varyLoad) {
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latencyTor <- append(latencyTor,
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netLatency(x, torProb, capacity*L))
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latency3 <- append(latency3,
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netLatency(x, t3$prob, capacity*L))
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latency4 <- append(latency4,
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netLatency(x, t4$prob, capacity*L))
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latency5 <- append(latency5,
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netLatency(x, t5$prob, capacity*L))
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}
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## Output graph
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pdf("vary-network-load.pdf")
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## Set up axes
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yFac <- 1000
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xFac <- 100
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ylim <- range(na.omit(c(latencyTor, latency3, latency4, latency5)))
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ylim <- c(0,0.015) * yFac
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xlim <- c(0,1) * xFac
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plot(NA, NA,
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xlim=xlim, ylim=ylim,
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frame.plot=FALSE,
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xlab = "Network load (%)",
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ylab = "Average queuing delay (ms)",
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main = "Latency for varying network loads")
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## Plot data
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col <- rainbow(8)
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lines(varyLoad*xFac, latency3*yFac, col=col[3])
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lines(varyLoad*xFac, latency4*yFac, col=col[4])
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lines(varyLoad*xFac, latency5*yFac, col=col[5])
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lines(varyLoad*xFac, latencyTor*yFac)
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## Plot points at which selection probabilities are optimal
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par(xpd=TRUE)
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points(c(0.9, 0.75, 0.5, 1)*xFac, rep(par("usr")[3], 4),
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col=c(col[3:5], "black"), pch=20,
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cex=2)
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## Close output device
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dev.off()
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@ -1,37 +0,0 @@
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%%
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%% This is file `prettyref.sty',
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%% generated with the docstrip utility.
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%%
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%% The original source files were:
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%%
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%% prettyref.dtx (with options: `style')
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%%
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%% Copyright (c) 1995 Kevin Ruland
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%%
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%%
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%% prettyref v3.0
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%%
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%% Copyright 1995,1998. by Kevin Ruland kevin@rodin.wustl.edu
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%%
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\ProvidesPackage{prettyref}[1998/07/09 v3.0]
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\def\newrefformat#1#2{%
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\@namedef{pr@#1}##1{#2}}
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\newrefformat{eq}{\textup{(\ref{#1})}}
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\newrefformat{lem}{Lemma \ref{#1}}
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\newrefformat{thm}{Theorem \ref{#1}}
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\newrefformat{cha}{Chapter \ref{#1}}
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\newrefformat{sec}{Section \ref{#1}}
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\newrefformat{tab}{Table \ref{#1} on page \pageref{#1}}
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\newrefformat{fig}{Figure \ref{#1} on page \pageref{#1}}
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\def\prettyref#1{\@prettyref#1:}
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\def\@prettyref#1:#2:{%
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\expandafter\ifx\csname pr@#1\endcsname\relax%
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\PackageWarning{prettyref}{Reference format #1\space undefined}%
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\ref{#1:#2}%
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\else%
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\csname pr@#1\endcsname{#1:#2}%
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\fi%
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}
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\endinput
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%%
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%% End of file `prettyref.sty'.
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