search for: xsim

...33.90248 33.90242 [281] 33.90235 33.90228 33.90227 33.90234 33.90241 33.90247 33.90254 33.90261 I mapped the locations of sampling plots based on x and y. > plot(x,y) I made arbitrarily 'fake' data with certain means and standard deviations to generate regression line as follows: > (xsim <- sort(rnorm(30, xmn, xsd))) [1] -87.85130 -87.85125 -87.85093 -87.85092 -87.85081 -87.85074 -87.85070 [8] -87.85070 -87.85060 -87.85059 -87.85053 -87.85046 -87.85046 -87.85042 [15] -87.85037 -87.85028 -87.85026 -87.85026 -87.85025 -87.85023 -87.85019 [22] -87.85015 -87.85007 -87.85003 -87.85...

...s casos crear una curva con valores constantes, habría que intentar, pero labcurve en algunos ejemplos en mi computadora no anda. Ayer envié dos correos, el primero era de latticeextra, usted nombra lattice, pero podría funcionar, en latticeextra: ## horizontal and vertical lines xyplot(ysim ~ xsim) + layer(panel.ablineq(v = 3, pos = 4, at = 0.1, lty = 2, label = "3.0 (critical value)")) + layer(panel.ablineq(h = mean(ysim), pos = 3, at = 0.15, lty = 2, varNames = alist(y = plain(mean)(y)))) Javier Marcuzzi El 19/11/13 04:24,...

Hi, The department of economics at our university (Budapest) is planning a course on numerical methods in economics. They are trying to decide which software to use for that, and I would like to advocate R. The other alternative is Matlab. I have found comparisons in terms of computational time for matrix algebra, but I don't think that is relevant: the bottleneck for economists is usually

Eric Recordé un ejemplo rápido ## Setup up coordinate system (with x == y aspect ratio): plot(c(-2,3), c(-1,5), type = "n", xlab = "x", ylab = "y", asp = 1) ## the x- and y-axis, and an integer grid abline(h = 0, v = 0, col = "gray60") text(1,0, "abline( h = 0 )", col = "gray60", adj = c(0, -.1)) abline(h = -1:5, v = -2:3, col =