From: Lorenzo Isella <lorenzo.isella_at_gmail.com>

Date: Sun 16 Jul 2006 - 22:09:17 EST

R-help@stat.math.ethz.ch mailing list

https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html Received on Sun Jul 16 23:23:25 2006

Date: Sun 16 Jul 2006 - 22:09:17 EST

Dear All,

I am getting some data from fluid dynamics simulations (air mixing in a pipe, 2D axial symmetry, geometry described by a radial coordinate r and an axial coordinate z) which I'd like to plot and analyze with R. Think about slicing the cylinder along its axial direction to get a set of cross sections which are orthogonal to the z axis. For each section, I have a set of velocity readings, i.e. the data I would like to plot are in the form:

v_11 v_12 v_13 ..... v_1n v_21 v_22 v_23 ..... v_2n ...................................... v_m1 v_m2 v_m3 ..... v_mn

where v_ij is the velocity reading on the i-th position along z and
the j-th position along r.

Tipically, these sets of data are plotted in 2D with r and z as axis
and the velocity field represented by using colours explained by a
legenda.

Can R do anything like this?

Second (and much simpler question): I have a list of data which I can
plot easily, but I would like to have the time during the day to label
the x axis (starting from 19:00 for forty hours).
How can I do that?

Many thanks

Lorenzo

R-help@stat.math.ethz.ch mailing list

https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html Received on Sun Jul 16 23:23:25 2006

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