Dear List,

I am using the flowCore and flowViz packages to perform some flow 
cytometry analyses on clinical data.
I find the packages extremely useful.

Some of the gating strategies I have to implement are quite tricky and I 
would like to use the "Work Flows" system
described in the flowCore reference manual. So far, I find this approach 
very efficient, not only for accessing the intermediate analysis steps 
of my analysis but also for solving memory issues when loading many FCS 
files.

I am stuck with the implementation of logical operations on the gate 
views of a workflow

For example let's say  I have a workflow object "wf" with two gate views

wf[["Lymphocytes+"]]
wf[["Monocytes-"]]

I would like to apply a filter on cells that are in the 
wf[["Lymphocytes+"]] OR wf[["Monocytes-"]] gate views.

Can this be done using the work flows system?  Would these operations be 
reflected in the work flow graph plot ?

Thank you in advance for you help

All the best,

Alessandro Di Cara
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