search for: nabla

Dear colleagues, Can anyone of you tell me how to write a "nabla" symbol in an R graph? Thanks in advance, Nuno ______________________________________________ Centro de Oceanografia - IO-FCUL, Portugal Center for Quantitative Fisheries Ecology - ODU, USA [[alternative HTML version deleted]]

I would like to label an x-axis with the nabla symbol. I have tried this with the following symbol escape sequence plot(1:5, 1:5, xlab=""); title(xlab="\\dl", vfont=c("serif symbol", "plain")) but I got the warning message parameter "vfont" couldn't be set in high-level plot()...

Hi all! I have a little question concerning quadprog. To make it simple I'll start by stating the problem: I want to minimize h(d,delta)=0.5d^T B d +nabla(f(x))^T d +rho*delta^2 With respect to d\in R^n and delta \in R. I obviously have constraints (depending on both d and delta). Solve.QP does give me a good result for d but I cannot obtain anything for delta. Simce dim(Dmat)=n and sol<-rep(0,n) it isn't particularly surprising. To set a d...

hi, i am basically using a button, Prototype/AJAX, and PHP to update a user''s location. something simple as typing ''Chicago, IL''. After the script, it rewrites the result in a div tag. here is the form i''m using: <div id="hometown_result">Aurora, IL</div> <form action="" method="post"

...zooming into a hiearchical clustering dendrogram. o plot.histogram() gains an 'ann' argument. (Wish from Ben Bolker.) o plot(<lm_obj>) now warns when it omits points with leverage one from a plot. o Plotmath now recognizes 'aleph' and 'nabla' (the Adobe Symbol 'gradient' glyph) as symbol names. o polyroot() no longer has a maximum degree. o The alpha/alphamax argument of the 'nls' and 'mle' profile() methods is used to compute confidence limits for univariate t-statistic...

...zooming into a hiearchical clustering dendrogram. o plot.histogram() gains an 'ann' argument. (Wish from Ben Bolker.) o plot(<lm_obj>) now warns when it omits points with leverage one from a plot. o Plotmath now recognizes 'aleph' and 'nabla' (the Adobe Symbol 'gradient' glyph) as symbol names. o polyroot() no longer has a maximum degree. o The alpha/alphamax argument of the 'nls' and 'mle' profile() methods is used to compute confidence limits for univariate t-statistic...