Hi list, I am trying to plot "FSC-W" over the ratio of "FSC-H" and "FSC-A" using flowViz::xyplot. Is there a direct method of doing this, without creating an intermediate new channel in the flowFrame? The manual hints at channel.x and channel.y as a way to achieve that, but I am at loss regarding the intended syntax. Related to that, the help states that this usage is discouraged. Is there a specific reason such as this functionality being deprecated/unstable? Thanks, Bastian Angermann -- GRATIS f?r alle GMX-Mitglieder: Die maxdome Movie-FLAT!

On Thu, Jun 25, 2009 at 3:32 PM, Bastian Angermann<angerb at="" gmx.de=""> wrote: > Hi list, > > I am trying to plot "FSC-W" over the ratio of "FSC-H" and "FSC-A" > using flowViz::xyplot. Is there a direct method of doing this, without creating an intermediate new channel in the flowFrame? Well, you could create the intermediate variable temporarily on-the-fly, which is essentially the same thing. E.g., xyplot(`FSC-W` ~ Ratio, transform(fset, Ratio = `FSC-H`/`FSC-A`)) > The manual hints at channel.x and channel.y as a way to achieve that, but I am at loss regarding the intended syntax. > > Related to that, the help states that this usage is discouraged. > Is there a specific reason such as this functionality being deprecated/unstable? The restrictions on the formula are necessitated by the complicated structure of flow data. More flexibility in the formula is certainly possible, but would likely involve a lot more bookkeeping, which is not worth the effort given that alternative solutions are available. -Deepayan