Problem: Plotting list of {InterpolatingFunction[]}
- To: mathgroup at smc.vnet.net
- Subject: [mg2548] Problem: Plotting list of {InterpolatingFunction[]}
- From: Patrick Jemmer <paddy at sun4.bham.ac.uk>
- Date: Mon, 20 Nov 1995 01:13:09 -0500
- Organization: The University of Birmingham, UK.
Hello all: I am solving a set of DEs using NDSolve to produce
a list of interpolating functions, where the list is called ans:
In[5]:= ans
Out[5]= {{source[t] -> InterpolatingFunction[{0., 1.}, <>][t],
> sink[t] -> InterpolatingFunction[{0., 1.}, <>][t],
> conc[t] -> InterpolatingFunction[{0., 1.}, <>][t],
> a1[t] -> InterpolatingFunction[{0., 1.}, <>][t],
> b1[t] -> InterpolatingFunction[{0., 1.}, <>][t]}}
I then substitute with the list sp={source[t], sink[t], ... }
intpf =sp/. ans
Out[6]= {InterpolatingFunction[{0., 1.}, <>][t],
> InterpolatingFunction[{0., 1.}, <>][t],
> InterpolatingFunction[{0., 1.}, <>][t],
> InterpolatingFunction[{0., 1.}, <>][t],
> InterpolatingFunction[{0., 1.}, <>][t]}
I am then trying to plot these together:
Plot[intpf,{t,0,1}]In[7]:= Plot[intpf,{t,0,1}]
Plot::plnr: CompiledFunction[{t}, intpf, -CompiledCode-][t]
is not a machine-size real number at t = 0..
Plot::plnr: CompiledFunction[{t}, intpf, -CompiledCode-][t]
is not a machine-size real number at t = 0.0416667.
Plot::plnr: CompiledFunction[{t}, intpf, -CompiledCode-][t]
is not a machine-size real number at t = 0.0833333.
General::stop: Further output of Plot::plnr
will be suppressed during this calculation.
and an empty plot....
If I extract each component
In[8]:= aa=intpf[[1]]
Out[8]= InterpolatingFunction[{0., 1.}, <>][t]
Everything works fine and i can plot the whole lot on one graph...
What's going on?
Thanks, patrick.
(e-mail duplicates of any help would be appreciated, as
I don't know whether I'll have access to usenet for a few days).
paddy at tc.mols.susx.ac.uk
but I just get the message