Is it possible that you have some field instability? If you look at the
absolute field values at the "blip," are they huge?
Are you certain that your material definition is stable?
On Mon, 8 Mar 2010, Aaron Danner wrote:
Dear Friends,
Below is a ctl file where a medium of gradient i
I guess your problem is NFS, which doesn't like parallel hdf5. Have a
look at some of the related threads on the mailing list:
http://www.mail-archive.com/search?l=meep-discuss%40ab-initio.mit.edu&q=NFS
Best,
Matt
On Sun, 24 Jan 2010, Lingyun Wang wrote:
I solved this i
possible.
Best,
Matt
On Wed, 9 Dec 2009, pengchao wrote:
Hi all,
I am working with meep-mpi which runs on a Linux cluster, and using NFS
to share the directory for scripts and output.
I found the creating HDF5 file process turned to be very slow, when I
set the output directory to the NFS
altogether - Steven
is refering to simulations with periodic boundary conditions. There,
you can't have broadband, oblique incidence simulations for a single
incidence angle. The periodic boundaries force each plane wave to have
a separate, unique incidence angle.
Best,
Matt
On Mo
making a loop and creating a large number of sources in the
source list.
Best,
Matt
On Mon, 16 Nov 2009, Andrew York wrote:
I needed a tilted, pulsed beam in one of my meep simulations, and I noticed
a few others on the mailing list have asked for something similar. I decided
to make my
sions here:
http://www.gnu.org/software/guile/manual/guile.html#Lambda
Best,
Matt
On Wed, 28 Oct 2009, liu wrote:
Hi, I have seen the following ctl file,
---
(define mysource (lambda (t) (sin (* 10 t
(define cs (list (make source
(src (make custom-sr
a test geometry and look at the output.
Best,
Matt
On Wed, 12 Aug 2009, asadollahbaik a. (aa306) wrote:
Dear Meep users,
Does anyone know where the centre point of a cone is?!
I think it is obvious to figure out where is the centre point for a
cylinder, sphere, block, ellipsoid, but whe
I don't think there's a way to do this. If you want only graphics
though, then you can use output-png with the -S flag to scale the image
to be smaller.
Best,
Matt
On Wed, 15 Jul 2009, Warner Miller wrote:
Hi,
Is there a way to output fields to an h5 file with a resolu
n-box only does boxes. Would it be feasible
to approximate the cylinders with a series of boxes, some as small as a
pixel, to compute the absorption in the cylinders? I'm guessing that's
not the intended use of the tool.
Best,
Matt
On Fri, 15 May 2009, Steven G. Johnson wrote:
or the scatter wraps up across the
lattice boundary, causing the problems I've described.
Maybe it's a useful description for someone :)
Kind Regards,
Matt
On Wed, 10 Jun 2009, matt wrote:
Yes, load-minus flux is from a simulation with exactly the same grid size an
n the scatterer run a block of metal is placed
on top of one of the lattice boundaries.
Best,
Matt
On Wed, 10 Jun 2009, Steven G. Johnson wrote:
On Jun 10, 2009, at 8:33 AM, matt wrote:
When this happens however, the load-minus-flux fails with the following
error:
meep: incorrect dataset
oblem.
Here I have a minimal script that duplicates the problem:
http://pastebin.com/f168203b6
I'm using meep version 1.0.
Best,
Matt
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using one cylinder and
one call to geometric-object-duplicates, then define several columns by
wrapping that in a call to geometric-objects-duplicates (with an s).
Best,
Matt
On Sun, 7 Jun 2009, Tenner S Lee wrote:
Hi,
I just started using meep in order to do some simulations on pho
In a geometry, later entries that overlap previous ones overwrite the
epsilon in the region of overlap.
Is the same true for the dispersive properties of the material?
Kind Regards,
Matt
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1200 (not computed)
This isn't related to subpixel smoothing; if I disable that I get
similar results.
Is this reasonable?
Kind Regards,
Matt
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thing besides the
resolution which might cause a very slight shift in frequency? The
analytic result is a frequency domain method, using the same lorentz
model for the perimittivities as the one I input into meep.
Best Regards,
Matt
On Fri, 29 May 2009, Steven G. Johnson wrote:
On May 29,
rials present?
Kind Regards,
Matt
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Hi Andrew,
Check this thread regarding the guile-config error:
http://www.mail-archive.com/meep-discuss@ab-initio.mit.edu/msg00185.html
I don't believe there are packages available for the latest meep
version.
Best,
Matt
On Fri, 15 May 2009, Andrew Galdes wrote:
Hello al
ing list but didn't find a relevant example. Is this
possible, and are there any examples available of how to do this?
Kind Regards,
Matt
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One thing I'm having trouble understanding is why this frequency scaling
isn't visible in the libctl transmission coefficient output.
Is there something special the meep flux computation does to repair the
frequency scaling caused by the gaussian-derivative source?
Kind Reg
Hi,
Have a look at this thread:
http://www.mail-archive.com/meep-discuss@ab-initio.mit.edu/msg00412.html
Best,
Matt
On Mon, 2 Feb 2009, Sivan, Yonatan wrote:
> Hi Meep users,
>
> I am relatively new to meep. Could anyone show me how to employ the
> perfect-electric-conduc
This is caused by floating point arithmetic. Have a look at this
thread:
http://www.mail-archive.com/meep-discuss@ab-initio.mit.edu/msg00978.html
Best,
Matt
On Fri, 30 Jan 2009, Antoine Monmayrant wrote:
> Hi everyone,
>
> I think I found something fishy with the procedure in
spectra (at least not in my matlab
processing of the time data).
I'm not sure if this is a bug in meep or if there's something I don't
understand in the processing of the time data.
Best Regards,
Matt
e2.png
Description: Binary data
___
ng by a factor of 10.
Best,
Matt
On Mon, 8 Dec 2008, Szymon Lis wrote:
> Yes. I know that we can observe small oscillation, when amplitude is
> small (especially on edge of source spectrum). But even for different
> resolutions (even better) I have got oscillations in middle frequenc
.mail-archive.com/meep-discuss@ab-initio.mit.edu/msg02231.html
that is, it should be
if (IF_EXCLUSIVE(am_master(), parallel || am_master())) {
not
if (IF_EXCLUSIVE(am_master(), parallel || am_master()) {
Best,
Matt
> Hi, matt
>
> H5Tset_size() in h5file::read or h5file::write throws out
When I run make check, on the test "h5test", one of the processes shuts
down, consistently.
I have an ubuntu package install of lam-mpi as well as h5utils, and am
compiling meep-mpi 0.20.3 manually. The repository packages installed
are libhdf5-lam-1.6.5-0, libhdf5-lam-dev, liblam4, and lam4-de
27;s a nonideal solution because it wastes
a simulation. Be careful though - I'm not sure if the pulse gets
shifted in frequency or if it is actually _stretched_ in frequency.
Maybe someone who knows more could weigh in.
Best,
Matt
On Sun, 28 Sep 2008, Andreas Francke wrote:
>
e way one would expect them to, but this seems to cause some stability
issues.
Kind Regards,
Matt
On Sat, 27 Sep 2008, Andreas Francke wrote:
> Dear Steven and list,
>
> I'm simulating with Meep resonant cavities like add-drop ring and disk
> resonators and obtain the resonant sp
Yes, you can do this. Meep has a subclass of sources called
"custom-src", (see the meep reference).
(define start 0)
(define end 300)
(define mysource (lambda (t) (sin (* 10 t
(define cs (list (make source
(src (make custom-src
(src-func myso
/000463.html
Best,
Matt
On Wed, 3 Sep 2008, Steven G. Johnson wrote:
> On Sep 3, 2008, at 1:19 PM, matt wrote:
>> I'm pretty certain that the matlab script is correct. Is there
>> something in meep which could be causing the frequency shift?
>
> No, I can't think
something a bit higher (188 THz).
I'm pretty certain that the matlab script is correct. Is there
something in meep which could be causing the frequency shift?
Kind Regards,
Matt
complete meep script: http://pastebin.com/f40f6a200
matlab fft script:
file = hdf5info('pulse
io.mit.edu/pipermail/meep-discuss/2008-August/002067.html
<http://ab-initio.mit.edu/pipermail/meep-discuss/2008-August/002052.html>
to which I've posted the same reply.
Matt
On Wed, Aug 20, 2008 at 7:45 PM, Matt Eichenfield <[EMAIL PROTECTED]> wrote:
> To whom it may concern
Sorry, I made a mistake. The directory for the colormaps should be
/usr/share/h5utils/colormaps, whereas I typed /user/share/...
The command is then
h5topng -c /usr/share/h5utils/colormaps/foomap foo.h5
On Tue, Aug 26, 2008 at 8:28 AM, Matt Eichenfield <[EMAIL PROTECTED]> wrote:
>
io.mit.edu/pipermail/meep-discuss/2008-August/002052.html
to which I've posted the same reply.
Matt
On Tue, Aug 26, 2008 at 5:01 AM, andika asyuda <[EMAIL PROTECTED]>wrote:
> good night meep user. my name is andika asyuda
>
> I have a question about h5util for ubuntu
>
diffracted mode?
Kind Regards,
Matt
On Wed, 20 Aug 2008, neal skinner wrote:
> Matt,
>
> Since you are asking about diffracted orders, I assume you are talking
> about a periodic structure. The concept of the spatial Fourier transform
> comes from a branch of optical science
just remove h5utils using apt-get and "manually" install version
1.11? Is this a known issue in versions earlier than 1.11 as well?
Thanks,
Matt Eichenfield
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gives the time-dependent field amplitude for the
m-th mode as a Fourier sum, but I don't understand how to use this with
meep.
Thanks,
Matt
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you need to put a "\" in front of "?" in the shell command line,
like this:
~> meep a\?=true file.ctl
That will get rid of the second error.
On Mon, 18 Aug 2008, asadollahbaik a. (aa306) wrote:
> Dear Meep users.
>
> I am doing the transmission and reflection simulation for a pattern
>
), with kx equal to
1/sx, and ky equal to 1/sy.
You can investigate whether your simulation is setup correctly by
visualizing the epsilon function. Your unit cell should like it could
tessellate into your full slab.
Best,
Matt
On Tue, 12 Aug 2008, Ryan Hao wrote:
> Hi, Matt,
>
>
Ryan,
See this message for an example:
http://osdir.com/ml/science.electromagnetism.meep.general/2007-12/msg00023.html
In 3D, you would also add pml in the Z direction.
Best,
Matt
On Tue, 12 Aug 2008, Ryan Hao wrote:
> Dear Professor,
> Sorry, the error message is &q
gh by using the stop-when-fields-decayed feature. It may also
>> help to use a more narrowband excitation.
>>
>> Hopefully that corrects it for you. If the simulation time becomes too
>> long, you can try to gradually reduce all of those distances until the
>> point
long, you can try to gradually reduce all of those distances until the
point where those errors become significant.
Best,
Matt
On Tue, 5 Aug 2008, Minh Nguyen Huu wrote:
>
> Hi,
>
> I've ran into a strange problem when trying to calculate the
> reflection spectrum
Hmm, good question. This is also not clear to me, and it doesn't seem
to be documented very well. I tried to backtrack to see how the libctl
interface does it, but I didn't get very far.
On Tue, 5 Aug 2008, Jefferson Thomas wrote:
> Thank you for your answer matt. I do
On Mon, 4 Aug 2008, Steven G. Johnson wrote:
> On Aug 4, 2008, at 4:42 PM, matt wrote:
>> Return a value from your eps function which is large and negative.
>> -1e20 should work.
>
> Or better yet, -HUGE_VAL (which is defined in m
> 2008/8/5 Steven G. Johnson <[EMAIL PROTECTED]>:
>> On Aug 4, 2008, at 4:42 PM, matt wrote:
>>> Return a value from your eps function which is large and negative.
>>> -1e20 should work.
>>
>> Or better yet, -HUGE
Return a value from your eps function which is large and negative.
-1e20 should work.
For metallic computation domain boundaries you can do this:
structure s(vol, eps);
fields f(&s);
f.set_boundary(High, X, Metallic);
f.set_boundary(Low, X, Metallic);
f.set_boundary(H
Ack, ignore my response; I just noticed that -0 recenters the origin to
the center of the dataset.
On Tue, 15 Jul 2008, matt wrote:
>
>
>
> I haven't looked at your code closely, but I have an idea about what
> could be wrong.
>
> when you ask h5topng to give you
e y dimension, and pick a
different slice in that range, corresponding to the middle of your
waveguide (e.g., y 18).
best,
matt
On Tue, 15 Jul 2008, Tobias Glahn wrote:
> Hello meep-discussion list,
>
> I'm trying to simulate a 3D rectangular waveguide (one could say I
> should
e is that the
scattered fields and total fields aren't actually stored separately, so
you don't have access to the scattered field inside the total field
region. Finally, having so many sources all around the computation
domain make the simulation very slow.
Best,
Matt
On Wed, 2 Jul
Hello,
I know from the mailing list that scalar permeabilities are not yet
implemented. Does that also mean there is no way to define geometric
objects like blocks or cylinders having a PMC material?
Kind Regards,
Matt
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sh
script which operates on two h5 files at a time.
I tried putting a (= 0 (meep-my-rank)) in the step function to
serialize this, but then meep-mpi deadlocked as warned in the
documentation.
On Wed, 18 Jun 2008, matt wrote:
>
>
>
>
> Neat, thanks!
>
> For the time avera
" " fname "")
step-func) to-do))
;; otherwise, add the output file to fname
((convert-complex-h5 true
(string-append "h5math -e \"d1 + sqrt(d2*d2 +
d3*d3)\" " fname " "
Hi Dr. Goldwin, have you had a look at the tutorial here already?:
http://ab-initio.mit.edu/wiki/index.php/Meep_Tutorial/Ring_resonator_in_cylindrical_coordinates
m [number]
For CYLINDRICAL simulations, specifies that the angular
dependence of the fields is of the form e
etic field at every step over a period, then
post-process all the output with matlab, but it would be much nicer if I
could ask meep to do the accumulation itself.
Any suggestions?
Best,
Matt
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That makes complete sense :)I'm not sure why I hadn't thought of this. I
tried as you suggest, and it works perfectly.
Thanks,
Matt
>
> On Wed, 11 Jun 2008, Mischa Megens wrote:
>
>>> Has anyone else had this problem? Any ideas on a solution?
>> I
ay.
Has anyone else had this problem? Any ideas on a solution?
Best,
Matt
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es to see whether the losses
converge when you increase the resolution, play with the source
settings, increase the pml thickness, etc.
Best,
Matt
On Tue, 3 Jun 2008, Mario Cao wrote:
> Hello,
>
> I send one question the 8th April and I have not got any reply.
> I would be
Do these texts answer your question?
http://ab-initio.mit.edu/wiki/index.php/Meep_Introduction#Finite-difference_time-domain_methods
http://ab-initio.mit.edu/wiki/index.php/Meep_Introduction#The_illusion_of_continuity_in_Meep
Best,
Matt
On Tue, 3 Jun 2008, Juntao Xi wrote:
> Hi, Steven
ayes.csit.fsu.edu/wiki/index.php/FAQ#How_do_I_run_MrBayes_MPI_.28parallel.29_version_in_the_background_on_an_SGI_machine.3F
Best,
Matt
On Thu, 8 May 2008, Murtaza Askari wrote:
> Hi All,
>
> I am really new to MEEP and Linux. When I generate the band structure
> using parallel mee
vior to be expected?
Kind Regards,
Matt
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t;, "+Z", and "-Z" to the
six sides of a box.
If you want an arbitrary waveguide, however, you need to define the surface of
your waveguide through your "eps" definition (see tutorial). To make a metallic
waveguide, set eps to be very large and negative (-1e20) for
oundary(High, X, Metallic);
Side can be High or Low,
Direction X,Y,Z,R, or P,
Boundary condition Periodic, Metallic, or Magnetic
The most efficient way to define a waveguide is with metallic boundary
conditions, which let you trim the computation domain down to a minimum.
Cheers,
Matt
On
point sources, this should disappear.
One thing I didn't understand were the cy and cx parameters. Also, in the
first part of your original code you had 4 pixel shift which doesn't appear in
the second part. Was there something different?
Best,
Matt
On Wed, 30 Jan 2008, Andr
.
Best,
Matt
(define-param phi 45);angle of incidence
(define-param freq 4);frequency
(define-param fcut 5);cutoff
(define-param fw 0.1);frequency width at turning on the source
(define Lpml 0.5) ;thickness of the pml
(define L 5 ) ;total size of the space
(define tfSize 2);edge length of total field
incidence.
Best,
Matt
>
> PLANE WAVES:
> ---
> You are working in 2D which means you want a line source in x-y in teh case
> of z-invariance. If you want a planewave propagating along z- then you should
> have no modulations on the x-y plane. If you want a 3D planewave t
er message if I learn anything new. I can try the same thing out
on a different installation to make sure it's just a fluke.
Best,
Matt
On Tue, 29 Jan 2008, Steven G. Johnson wrote:
> On Tue, 29 Jan 2008, matt wrote:
>> I noticed some strange behavior in output-png+h5 with meep-mp
) reproduce the error...
As a side question, I never get perfect plane waves with this approach,
even if I make the pml thick and let the simulation run for many time
steps. Is there something else I should consider?
Best,
Matt
(set! eps-averaging? false)
(define-param s 1600) ; the size of the
alls to set_epsilon() will clobber those values. This means the
interface should set inveps only after set_epsilon has been called?
4) Is it possible to set inveps in a way which takes advantage of the
existing anisotropic averaging code (which also sets inveps)?
These aren't related to this prob
search the complete archives here:
http://www.mail-archive.com/meep-discuss@ab-initio.mit.edu/
Happy New Year,
Matt
On Thu, 27 Dec 2007, Puck Ja wrote:
> Hi,
>
> I am new to MEEP and have found one issue with h5topng. After simulation,
> the field snap shot was generated with the command
L in the X direction, and the boundary of
computatation is adjusted accordingly. The source plane extends from
the left to the right of the cell.
Also, it may be more convenient for you to use output-png instead of
h5topng at the command line.
Best,
Matt
On Fri, 14 Dec 2007, Anatol
Hi Daniel,
Check this post:
http://www.mail-archive.com/meep-discuss@ab-initio.mit.edu/msg00161.html
Best,
Matt
On Thu, 29 Nov 2007, Dani Infante wrote:
> I have been using harminv to calculate the frequencies and Q factors of the
> modes in a photonic crystal cavity and I have got s
tallic blocks for the parallel plates, instead of setting
the High and Low X boundaries to Metallic, but the result was the same.
Is this a bug?
Kind Regards,
Matt
xslice_t200.png
Description: t200
xslice_t2000.png
Description: t2000
___
meep-discus
Hello,
Meep still does some averaging, even when you set eps-averaging? to
false. There's a description of how to disable this averaging here:
http://article.gmane.org/gmane.comp.science.electromagnetism.meep.general/726
Best,
Matt
On Sun, 4 Nov 2007, huoliangcl2 wrote:
> Dea
x27;m assuming that my example works because it runs and gives me an end
result, but I haven't actually investigated whether the values of
epsilon and sigma change as a function of position.
Best Regards,
Matt
On Fri, 12 Oct 2007, Benjamin M. Schwartz wrote:
> matt wrote:
>> You proab
, you
only pass a single sigma value.
Kind Regards,
Matt
> As it happens, I've already read all these threads. I was specifically aware
> of
> the need to assign the polarizability I used to a simple-dielectric object.
> For
> that reason, I wrote a function "initiali
ss@ab-initio.mit.edu/msg00635.html
http://www.mail-archive.com/meep-discuss@ab-initio.mit.edu/msg00902.html
I found these by searching for "material-function sigma" on the mailing
list, though I think you would also find the same hits if you searched
for "Johnson".
Best Regards,
these hacks documented somewhere? If not, could anyone who
successfully got anisotropy working clue us in on how they achieved
this?
Best Regards,
Matt
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Hello,
Is there any documentation available on using "subplex", listed in the
libctl release notes?
Best,
Matt
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This was a very simple problem; guile 1.6.7 and 1.8.2 behave slightly
differently.
read-line works with
(use-modules (ice-9 rdelim))
Regards,
Matt
On Mon, 13 Aug 2007, matt wrote:
>
>
> Hello,
>
> I have a meep script which opens a text file and sets some parameters
> a
mpirun -np 4 meep-mpi test.ctl
Using MPI version 2.0, 4 processes
ERROR: Unbound variable: read-line
rank 1 in job 57 cariddi_60917 caused collective abort of all ranks
exit status of rank 1: killed by signal 9
Is this intentional? If so, is there some alternative I can try?
Best Regards
You were correct, it was an install problem.
Thanks,
Matt
On Wed, 8 Aug 2007, Steven G. Johnson wrote:
> On Wed, 8 Aug 2007, matt wrote:
>> % mpirun -np 4 meep-mpi mm1.ctl > noscatrun.out && echo "finished"
>> meep: not compiled with HDF5, required for H
ing I should do in the ctl
file to implement said hacks?
Best Regards,
Matt
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plane and surrounding interfaces. A good starting point is
one wavelength on either side, but this may be excessive in certain
circumstances (for normal incidence you can get away with less).
Matt
On Thu, 2 Aug 2007, seathink wrote:
> Hi Steven and Meep users,
The following structure ha
Hello,
Thanks for your suggestion. It seems that a fitting complex data is not
possible with grace. It's possible to fit one curve at a time (real, or
imaginary, separately).
Best Regards,
Matt
On Tue, 3 Jul 2007, Andreas Wilde wrote:
matt wrote:
Hello,
I have the foll
one can write a stupid excel spread sheet to fit N lorentzians to a table of
> (experimental) complex epsilons...
Best Regards,
Matt
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gards,
Matt
On Wed, 27 Jun 2007, matt wrote:
>
>
> That's not it. I set the resolution early in the script, and I'm able
> to confirm via h5ls that increasing the resolution in the script
> increases the size of problem.
>
> Best,
> Matt
>
>> The prob
That's not it. I set the resolution early in the script, and I'm able
to confirm via h5ls that increasing the resolution in the script
increases the size of problem.
Best,
Matt
> The problem turned out to be that they were calling (set! resolution ...)
> too late in the file
0) calculate reflectivity based on a flux point instead of a flux plane
Just looking at the curve width make me think there's some kind of
dispersive behavior, but I have no idea where it could be coming from.
Any ideas?
Best Regards,
Matt
compare.png
lues which fits a curve to those references.
It would be nice if we could share this info here on the mailing list,
and perhaps even collect it on a wiki page.
Best Regards,
Matt
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tools like sed, awk,
grep, or perl to automate the removal of the unwanted text.
Best,
Matt
On Wed, 30 May 2007, Andreas Wilde wrote:
Hello,
I´m trying to compute transmission spectra of some structures using
meep-mpi. The problem is: If I set a command line argument meep prints a
statement
co
like this:
(define-param k-interp 19)
(run-k-points 300 (interpolate k-interp (list (vector3 0) (vector3 0.5
There's a nice example here:
http://ab-initio.mit.edu/wiki/index.php/Meep_Tutorial/Band_diagram%2C_resonant_modes%2C_and_transmission_in_a_holey_waveguide
Best,
Matt
On Mon, 1
According to this,
http://article.gmane.org/gmane.comp.science.electromagnetism.meep.general/431/
the C++ version uses complex fields by default. Perhaps this already
answers your second question, about why you are using up twice the
memory you expect to be using up.
Kind Regards,
Matt
,
Matt
On Sun, 22 Apr 2007, Andrew Andrew wrote:
> Hi Alex,
>
> I wait a longer time, but it doesn't work. I will show you some details.
>
> The control file is holey-wvg-bands.ctl which can be found in meep's example
> files. Because I want to find the Q of kx=0
.us/23054
touch asdf.h5 && rm *.h5 *.png comput* *~ && meep no-scatterer\?=true
compute-flux\?=true test.ctl | tee lastrun.out && meep no-scatterer\?=false compute-flux\?=true
test.ctl | tee -a lastrun.out
Kind Regards,
Matt
1.
The first scenario has something to do with an incorrect lapack install,
or perhaps you just need to specify --with-lapack when running
configure.
I'm not familiar with the other errors.
On Mon, 2 Apr 2007, Nicolas Tetreault wrote:
Hi all,
hopefully you can give me a hand with this. I c
nant_modes%2C_and_transmission_in_a_holey_waveguide#Band_diagram
Kind Regards,
Matt
On Mon, 2 Apr 2007, #YIP CHAN HOE# wrote:
Dear Meep users,
I am rather weak in Scheme programming and couldn't figure out after working a
few days on this.
I wanted to run Harminv on several k-points in my structure. So I wrote a lo
least for incidence angles
which are not too shallow).
Thanks again for all the support! Meep rocks.
Kind Regards,
Matt
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false output-finalfield\?=true
compute-flux\?=true test.ctl | tee -a lastrun.out
Best Regards,
Matt
On Wed, 28 Mar 2007, Steven G. Johnson wrote:
On Wed, 28 Mar 2007, Steven G. Johnson wrote:
If you have a non-periodic structure in the x direction, or care about
frequencies above the diffrac
o do what you describe; create a 2d dataset of scattering
properties over frequency and angle.
Best,
Matt
On Wed, 28 Mar 2007, Steven G. Johnson wrote:
On Wed, 28 Mar 2007, matt wrote:
My trouble with this is that it isn't compatible with the periodic plane
wave excitation:
I can creat
e periodic boundaries are frequency specific.
For a gaussian source, a small df practically makes it a continuous
source, producing the same results.
The reason you'd want this is to be able to calculate the scattering
properties for a particular angle of incidence.
Kind Regards,
Matt
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