ok, so the system under discussion is this one:
http://scicomp.stackexchange.com/questions/19585/system-of-coupled-nonlinear-odes-with-complex-coefficients
i think the choice basically comes down to either
a) an explicit RK method in ODE.jl or
b) CVODE(S) in Sundials.jl
What do you guys suggest
Any suggestions for solving a nonlinear system of ~1000 coupled ODEs with
complex coefficients?
Yes but so how do I update it inplace?
On Monday, April 13, 2015 at 5:37:50 PM UTC+2, Kristoffer Carlsson wrote:
>
> If you have the same sparse structures in your matrices then it should be
> sufficient to to the IJV -> CSC sparse matrix conversion only once and then
> update A in place instead
OK so I'm not sure how to "directly access the CSC structure".
Anyway, for clarity, here is the method which generates my sparse matrix. In
a typical usage scenario, I need to generate and diagonalize a lot of these
matrices, which are obtained varying the *s* Function.
I guess this qualifies as
455667
>> 0.712479
>> 0.326213
>>
>>
>> julia> b # For this, b is overwritten
>> 3-element Array{Float64,1}:
>> 0.455667
>> 0.712479
>> 0.326213
>>
>>
>>
>>
>> On Friday, April 10, 2015 at 11:19:45 AM UTC+2, A
s pretty
> interesting and certainly has applications in all kids of fields, so it
> would be cool if you had some ideas about how to systematically approach
> this problem.
>
>
> On Sunday, April 12, 2015 at 10:06:10 PM UTC+2, Andrei Berceanu wrote:
>>
>> Hi Maur
Hi Mauro, I realised after posting this that I should have been much more
specific.
I apologise for that!
Anyway, thanks for you reply. Not sure what you mean by OO programming, as
I thought Julia uses multiple dispatch and not OO.
PS: You're the first person I see that also uses runbox, that
+2, Viral Shah wrote:
>
> Could you post a self-sufficient code so that the errors can be reproduced?
>
> -viral
>
> On Thursday, April 9, 2015 at 11:40:00 PM UTC+5:30, Andrei Berceanu wrote:
>>
>> I now get
>>
>>
>>
>> *CHOLMOD warning: not positiv
ample if you need the eigenvector(s) as well.
>
> Best,
>
> Alex.
>
> On Thursday, 9 April 2015 19:34:40 UTC+2, Andrei Berceanu wrote:
> > How can I get the minimum eigenvalue of a sparse matrix?
> > I found eigmin(A), but it only seems to work on dense matrices.
&
How can I get the minimum eigenvalue of a sparse matrix?
I found eigmin(A), but it only seems to work on dense matrices.
ERROR: `eigmin` has no method matching
eigmin(::SparseMatrixCSC{Complex{Float64},Int64})
Hi guys!
Here is [part of] some code I recently wrote for solving a physics problem:
https://gist.github.com/berceanu/010d331884848205acef
It's the first time I try to use Julia constructors properly (or
improperly?!) so I need your opinion on a couple of points.
1. On Julia's IRC channel I was
I just found this as a starting point
http://philippjfr.com/blog/interfacing-holoviews-with-julia/
On Saturday, April 4, 2015 at 1:21:00 AM UTC+2, Andrei Berceanu wrote:
>
> Are you guys familiar with http://ioam.github.io/holoviews ?
> Is anyone working on a Julia interface or port?
>
> //A
>
Are you guys familiar with http://ioam.github.io/holoviews ?
Is anyone working on a Julia interface or port?
//A
So where am I supposed to see the extra debugging info? I still get the
same "Kerned died" message window.
On Friday, March 27, 2015 at 6:06:29 AM UTC+1, Daniel Høegh wrote:
>
> This looks like issue: https://github.com/JuliaLang/IJulia.jl/issues/286
Is there any way of setting a default value for a slider object, different
from the middle of the slider interval (which is automatically chosen)?
I am refering to, i.e.
*using Reactive, Interacta = slider(1:10)*
*--> *this will have a default value of 5.
I seem to be getting this message, with no other error, quite often when
evaluating my notebook.
What is the recommended way of debugging such a thing? Since no extra
information is provided I have no idea what is causing it in my code, or
even if its an IJulia problem.
//A
lection to change wrt another signal, you will need to
> lift the togglebuttons and set the value_label, but the value in the input
> won't change without user interaction...
>
> I may not have understood your question fully well. I hope you can play
> around with value_label and
, if you are passing in your own input signal to widgets, you
> need to take care of maintaining the right initial values. It's also better
> to use OrderedDict from DataStructures package here to keep the ordering of
> the key-value pairs.
>
>
>
&
Consider the following code
*using Reactive, Interactα = Input(0)togglebuttons(["one" => 1, "two" =>
2], signal=α)signal(α)*I would expect the value of *α *to change after
executing the *togglebuttons*(..) line, however this is not the case.
*signal(α) *on the next line shows that *α *is st
Hi guys,
Say I have a tuple of anonymous functions, such as:
*foolist = ((x,y)-> exp(x*y), (x,y)-> sin(x+y))*
and would like to (programatically) produce another tuple where every
function has its overall sign changed. In my example this would be
*newfoolist = ((x,y)-> -exp(x*y), (x,y)-> -si
Hi,
I need some help shortening this fragment of Julia code
https://gist.github.com/berceanu/e4fdfa6285d30c024a71
The main idea is that *ft* and *ftex* are both tuples containing 4
anonymous functions. The are initialized as the identical function, but
then depending on the toggle buttons, can
Trying to plot a Matrix with a single nonzero element in Gadfly using
*using Gadflya = zeros(Float64, 10,10);a[5,5] = 1;spy(a)*
The result is shown in the attached figure. How can I convince Gadfly to
show me also the zero values, in order to see the whole array, not just one
element?
To se
anytime you need Gadfly's plot.
>
> You can find more info here:
> http://docs.julialang.org/en/release-0.3/manual/modules/#summary-of-module-usage
>
>
>
>
> Am 06.03.2015 um 14:12 schrieb Andreas Lobinger >:
>
> > Hello colleague,
> >
> >
Hi guys,
when I do
using Gadfly, PyPlot
i get
Warning: using PyPlot.plot in module Main conflicts with an existing identifier.
And other warning of the same type. How can I solve this?
at 11:11:26 PM UTC+1, René Donner wrote:
>
> Can you post the code you are trying to run? Which Julia version are you
> on?
>
> The example given on https://github.com/JuliaOpt/LsqFit.jl works fine
> here on 0.3.6.
>
>
>
> Am 03.03.2015 um 22:55 schrieb Andrei Bercea
i now get
`start` has no method matching start(::LsqFitResult{Float64})
On Tuesday, March 3, 2015 at 10:41:11 PM UTC+1, René Donner wrote:
>
> Looks like curve_fit has been moved to
> https://github.com/JuliaOpt/LsqFit.jl
>
>
> Am 03.03.2015 um 22:30 schrieb Andrei Ber
i found this post concerning nonlinear curve fitting in Julia,
http://www.walkingrandomly.com/?p=5181
but it appears the curve_fit method no longer exists
does anyone have an updated version?
Is there some Julia library that allows one to do create 3D (surface plots)
in the IJulia notebook and then rotate them interactively, using the mouse?
//A
> for x in linspace(0.0,2π,N), y in linspace(0.0,2π,N)
> push!(X, x)
> push!(Y, y)
> push!(Z, sin(x)*sin(y))
> end
> plot(x=X,y=Y,color=Z,Geom.rectbin)
>
>
>
> On Friday, February 6, 2015 at 5:34:45 PM UTC-5, Andrei Berceanu wrote:
>>
>>
I have a 2D plot of 2 layers with different colors:
*using Gadflyplot(layer(x=1:10, y=rand(10), Geom.line, Geom.point,
Theme(default_color=color("red"))), layer(x=1:10, y=rand(10),
Geom.line, Geom.point, Theme(default_color=color("green"*How can I
generate a legend which specifies
I am trying to get rendering of LaTeX expressions in Gadfly axes labels,
with
*using Gadflyplot(x=1:10, y=rand(10), Geom.line, Geom.point,
Guide.xlabel("$c^2$"), Guide.ylabel("E"))*
however this does not seem to work. Does anyone know how to do it?
//A
e:
>
> draw(SVG(20cm, 10cm), plot(...))
>
>
> On Wednesday, February 11, 2015 at 3:42:47 PM UTC-8, Andrei Berceanu wrote:
>>
>> set_default_plot_size changes the default size of all following plots,
>> but how can i set the size of a certain plot individually?
>>
>> //A
>>
>
Does anyone know how I could draw a circle/square of a given radius/size on
top of a Gadfly plot? Can I do it directly from within the plot command, or
do I need to compose the figure after plotting it?
I am using IJulia so im guessing its using svgs via the D3 backend (i do
not explicitly call
set_default_plot_size changes the default size of all following plots, but
how can i set the size of a certain plot individually?
//A
I have written the following function for generating a sparse matrix:
*function genspmat(ω0::Float64; N=pm["N"], α=pm["α"], γ=pm["γ"],
κ=pm["κ"])# Determine memory usagenz = countnonzeros(; N=N)#
Prea
The only thing keeping me from migrating from PyPlot to Gadfly is the lack
of 2D plotting abilities. To exemplify, I used the following code to
generate the attached image with PyPlot (here data is a 2d array):
*fig, ax = plt.subplots(figsize=(4, 4))img = ax[:imshow](data,
orig
would be appreciated, I imagine.
>
> Julia does have bindings to GTK and TK. Depending on your familiarity with
> these frameworks, they may work for you.
>
> Regards
> -
> Avik
>
> On Friday, 6 February 2015 18:40:46 UTC, Andrei Berceanu wrote:
>>
>> So I hav
So I have wrote the code for a numerical simulation in Julia, and I have a
few free parameters that I can play with (5-6) which will change the
resulting plots. The plots are done using Matplotlib via PyPlot.
I would like to build a simple GUI with a few sliders for my parameters and
an array o
I'm thinking, given that the phase map was produced by applying
Base.angle() on another (complex) matrix (say we call it M), it is this
function which caused the phase wrapping in the first place, right? So
can't I somehow get around the problem and produce the unwrapped map
directly from M?
O
I'm hoping it wouldn't, but it is actually one of the things I would like
to test.
On Wednesday, February 4, 2015 at 3:17:39 PM UTC+1, Michele Zaffalon wrote:
>
> Wouldn't the answer depend on the path you choose?
>
> On Wed, Feb 4, 2015 at 3:04 PM, Andrei Berceanu
I guess what I'm trying to say is that your answer makes sense for
continuous functions, while mine has jumps of 2\pi, and so the phase change
is equal to the total number of these jumps (times 2\pi). Does this make
sense?
On Wednesday, February 4, 2015 at 11:36:51 AM UTC+1, Andrei Ber
; On Tuesday, February 3, 2015 at 1:17:15 PM UTC-5, Andrei Berceanu wrote:
>
>> How can I numerically compute the total change in phase as one goes
>> around a closed loop centered on the site $m=n=0$?
>>
>
> Seems like
>
> totalchangeinphase(m,n) = 0
>
> wo
I would like to use Julia to solve the following problem, any suggestions
are welcome :)
The attached image (obtained in Julia) represents the phase of a
wavefunction (in radians) on a square lattice, where m and n label the
lattice sites. Computationally speaking, it is the density plot of a 4
icient of the leading order term, not the
> value of the polynomial.
>
> Thanks,
>
> Jiahao Chen
> Staff Research Scientist
> MIT Computer Science and Artificial Intelligence Laboratory
>
> On Mon, Feb 2, 2015 at 11:43 AM, Andrei Berceanu > wro
:24:21 PM UTC+1, Andrei Berceanu wrote:
>
> Andras, no worries :) Now I understand why I couldn't find the polynomials
> in your gist!
>
> //A
>
> On Monday, February 2, 2015 at 5:19:49 PM UTC+1, Andras Niedermayer wrote:
>>
>> Sorry, I meant Cubic Hermite I
ly used it with the output of the ODE.jl.
>>
>> I hope this is a useful starting point...
>>
>> Best,
>> Andras
>>
>> On Monday, February 2, 2015 at 4:38:57 PM UTC+1, Andrei Berceanu wrote:
>>>
>>> Yes, exactly, in order to generate plots li
s is a useful starting point...
>
> Best,
> Andras
>
> On Monday, February 2, 2015 at 4:38:57 PM UTC+1, Andrei Berceanu wrote:
>>
>> Yes, exactly, in order to generate plots like
>> http://en.wikipedia.org/wiki/Hermite_polynomials#mediaviewer/File:Hermite_poly_phys.svg
>
Yes, exactly, in order to generate plots like
http://en.wikipedia.org/wiki/Hermite_polynomials#mediaviewer/File:Hermite_poly_phys.svg
//A
On Monday, February 2, 2015 at 4:36:55 PM UTC+1, Jiahao Chen wrote:
>
>
> > Is there an easy way to compute Hn(x)?
>
> Do you mean to evaluate a given Hermit
Hi,
Are Hermite polynomials (http://en.wikipedia.org/wiki/Hermite_polynomials)
implemented in Julia? Is there an easy way to compute Hn(x)?
//A
ble to get closer to what you want by using shifts in eigs.
> Then you'll get the values closest to the value of the shift.
>
> 2015-01-26 11:41 GMT-05:00 Andrei Berceanu >:
>
>> Indeed it seems to work with complex matrices as well. What would be very
>> useful
Also, does eigs return the corresponding eigenvectors as well?
//A
On Monday, January 26, 2015 at 5:41:44 PM UTC+1, Andrei Berceanu wrote:
>
> Indeed it seems to work with complex matrices as well. What would be very
> useful for me is the ability to get eigenvalues within a certain
t;
> should give you the largest (in magnitude) values.
>
> I think the documentation is simply wrong when stating that the matrix has
> to be real. I just tried a complex matrix and it worked just fine, so
> please open an issue about the documentation.
>
> 2015-01-26 10:03 GMT-05:
Besides, the help of eigs says "using Lanczos or Arnoldi iterations for
real symmetric or general nonsymmetric matrices respectively". Mine is
hermitian, i.e. complex and symmetric.
On Monday, January 26, 2015 at 4:02:16 PM UTC+1, Andrei Berceanu wrote:
>
> That seems to return
e
> them.
>
> 2015-01-26 9:40 GMT-05:00 Andrei Berceanu >:
>
>> Is there any Julia function for computing the eigenvalues of a large,
>> sparse, hermitian matrix M? I have tried eig(M) and eigvals(M) and got the
>> "no method" error.
>>
>> //A
>>
>
>
Is there any Julia function for computing the eigenvalues of a large,
sparse, hermitian matrix M? I have tried eig(M) and eigvals(M) and got the
"no method" error.
//A
suitable
version of the gnu-ada compiler from http://libre.adacore.com. See
details at https://github.com/janverschelde/PHCpack/issues/3.
On 12/27/2014 01:11 AM, Evan Pu wrote:
is this thread still alive? a phc package would be good...
On Monday, June 23, 2014 5:26:34 AM UTC-7, Andrei Berceanu
>> > Andrei we probably have to build other
>> > parts that interact with suitesparse
>> > from source ins
at the Julia package was build with USE_SYSTEM_SUITESPARSE=0
>
> I am currently building the Julia from the PKGBUILD in order to confirm
> that these build-options lead to the problem.
>
> Best,
> Valentin
>
> On Tuesday, 16 December 2014 11:59:51 UTC+1, Andrei Berceanu wrote:
output in REPL (followed by a crash), in IJulia I simply get a
popup saying the kernel died.
On Tuesday, December 16, 2014 10:34:27 AM UTC+1, Andrei Berceanu wrote:
>
> Ok, so here is the output from versioninfo() from inside the Julia REPL:
>
>
>
>
>
>
>
>
>
> *Jul
wrote:
>>
>> A fellow archuser here. Under which circumstances does the error occur?
>> Eg. what code are you executing?
>>
>> And what does
>> pacman -Qi julia blas lapack
>> output>
>>
>> On Monday, 15 December 2014 19:14:22 UTC+1, And
Hi all,
I recently upgraded to Julia Version 0.3.3 on my Arch Linux box and
sometimes get this strange error, followed by a kernel crash - what gives?
julia: symbol lookup error: /usr/bin/../lib/julia/libcholmod.so: undefined
symbol: zpotrf_
//A
option if you are comfortable with it.
>
> Best,
>
> Tamas
>
> On Sun, Oct 12 2014, Andrei Berceanu >
> wrote:
>
> > I was wondering what the status of Julia support in Emacs is. I assume
> it
> > can do syntax highlighting, but can it
> >
>
Ok, thanks a lot! :)
On Saturday, October 18, 2014 9:31:02 PM UTC+2, Steven G. Johnson wrote:
>
> In order to display something in IJulia, you don't have much choice but to
> redraw the whole figure I think, since it needs to render a new PNG image
> and send it to the front-end.
>
> On the oth
I was wondering what the status of Julia support in Emacs is. I assume it
can do syntax highlighting, but can it
1. connect and send code to the REPL and/or IJulia
2. jump to a specific function definition (like, for instance, Juno, the
LightTable plugin)
3. autocomplete code and
4. show help fo
I would like to have a slider controlling a vertical bar on my plot.
Changing the value of the slider should only move the bar, not replot the
whole figure. So far I have come up with this code
*using Reactive, Interactusing PyPlotf = figure();x =
linspace(0,10,1000)vertval=s
Done. See https://github.com/JuliaLang/julia/issues/8643
On Thursday, October 9, 2014 10:11:40 PM UTC+2, Stefan Karpinski wrote:
>
> Sure. It will serve as a good place for discussion of ideas.
>
> On Thu, Oct 9, 2014 at 4:09 PM, Andrei Berceanu > wrote:
>
>> Ah ok, I
> On Thu, Oct 9, 2014 at 4:02 PM, Andrei Berceanu > wrote:
>
>> Tim, what do you mean by "people have moved away from it now that we have
>> keywords"? In my example I do use keywords (in fact that is the only thing
>> I use), notice the ";" a
; > Yes, this is a major problem, but I'm not sure what the fix is. It's a
> > serious language design issue and I'm not aware of any languages that
> have
> > good solutions.
> >
> > On Thu, Oct 9, 2014 at 3:09 PM, Andrei Berceanu >
&
I often find myself passing long lists of parameters from one function to
another. A simple, contrived example would be the following
*function fun3(; kw1 = 1, kw2 = 2, kw5 = 8, kw6 = 4)fun2(; kw1 = kw1,
kw2 = kw2)endfunction fun2(; kw1 = 1, kw2 = 2)fun1(; kw1 = kw1, kw2 =
kw2
05 AM UTC-4, Iain Dunning wrote:
>>
>> At a glance, why build list only to just add it to J? Why not add it
>> directly to J, and add i to I.
>>
>> If I have a chance I'll look further.
>>
>> Which Julia?
>>
>> On Monday, October 6, 201
I have written the following Julia code to build a sparse matrix of
dimension N^2xN^2
https://gist.github.com/berceanu/fe7e26840637517383d8
The code works (probably in a very suboptimal way) for small enough
matrices, but for example if I set N=1000, genspmat(1000) quickly eats up
my RAM and c
I see that MyModule.x() does work, but since I exported the x function in
MyModule, I expected x() to just work. Besides, writing MyModule.stuff
everytime is quite cumbersome.
//A
On Saturday, October 4, 2014 7:55:40 PM UTC+2, Andrei Berceanu wrote:
>
> I created a file called MyModule.j
I created a file called MyModule.jl with the following content
module MyModule
export x, y
x() = "x"
y() = "y"
p() = "p"
end
from the REPL, i can do
using MyModule
x()
--> "x"
Now I would like to use the Autoreload package for easy hacking on my fancy
new module.
So in the REPL I do
using A
seems that you should set JULIA_EDITOR. It might be that your VISUAL
> variable is still set to Vim.
>
> V
>
> On Wednesday, 1 October 2014 15:24:30 UTC+2, Andrei Berceanu wrote:
>>
>> I changed the EDITOR environment variable in my profile, and now IJulia
>> returns
&
2014 3:00:27 PM UTC+2, Isaiah wrote:
>
> try changing your EDITOR variable to something that starts own window /
> can run outside of terminal.
> On Sep 29, 2014 6:08 PM, "Andrei Berceanu" > wrote:
>
>> Is there a way to open an external text editor (say gvim) f
Is there a way to open an external text editor (say gvim) from within
IJulia? More specifically, I would like to be able to edit the definition
of a function. In the REPL I can use @edit fun() and this opens the module
where fun() is defined at the specific line. However in IJulia I get
@edit
IPython doesn't do update on release, Interact, in fact, uses the same
>> widgets. What it does do is have at most 4 updates at any given time in the
>> processing pipeline (any more updates replace the last update in the queue).
>>
>> On Mon, Sep 8, 2014 at 8:45 PM, And
I just submitted https://github.com/stevengj/PyPlot.jl/issues/84.
//A
On Monday, September 8, 2014 1:31:21 PM UTC+2, Andrei Berceanu wrote:
>
> I'm trying to create a two-panel interactive figure using Interact.jl and
> PyPlot.jl. Based on the example notebooks from Interact.jl,
.
On Monday, September 8, 2014 4:10:05 PM UTC+2, John Myles White wrote:
>
> I suspect the only way to do this is to change Interact so that it exposes
> a minimum time threshold before it registers a state change.
>
> — John
>
> On Sep 8, 2014, at 4:16 AM, Andrei Berceanu &
I'm trying to create a two-panel interactive figure using Interact.jl and
PyPlot.jl. Based on the example notebooks from Interact.jl, I came up with
the following:
using Reactive, Interact
using PyPlot
x = linspace(0,2π,1000);
f, axes = plt.subplots(1,2, figsize=(4, 4))
@manipulate for α=1:0.1:
I have some code along the lines of
f = figure()
@manipulate for α=1:0.1:3, β=1:0.1:3, γ=1:0.1:3; withfig(f) do
y = fun(α,β,γ)
PyPlot.plot(x, y)
end
end
where fun is a *very slow* function to evaluate. Is there any way to tell
@manipulate to update the resulting plot only aft
On a more general note, I am thinking that with a bit of cleanup, this code
could make a good Julia metaprogramming example, especially since I haven't
seen many of those around :)
//A
On Saturday, August 30, 2014 10:52:49 AM UTC+2, Andrei Berceanu wrote:
>
> This is what I came
This is what I came up with for the full matrix calculation:
https://github.com/berceanu/notebooks/blob/master/julia/macros.ipynb
I now have a macro for the elements of M, another for the elements of Q and
yet another for the elements of L. In the end I define the genmatL function
which loops o
August 28, 2014 10:42:29 PM UTC+2, Steven G. Johnson wrote:
>
> On Thursday, August 28, 2014 6:36:16 AM UTC-4, Andrei Berceanu wrote:
>>
>> Steven, could you detail your macro proposal please? What exactly do you
>> have in mind?
>>
>
> e.g. you could have a mac
Steven, could you detail your macro proposal please? What exactly do you
have in mind?
On Thursday, August 28, 2014 12:18:54 PM UTC+2, Tomas Lycken wrote:
>
> Maybe https://github.com/Jutho/TensorOperations.jl can be helpful here?
> I've never used it myself, but just by the name and the descrip
Hi guys,
I am trying to programatically generate a Julia function that calculates a
6x6 matrix.
I have written a short LaTeX description of the problem at:
http://nbviewer.ipython.org/github/berceanu/notebooks/blob/master/OPODrag/block_matrix.ipynb
The basic idea is, I have an analytical expres
x it?
>>
>> — John
>>
>> On Jul 29, 2014, at 7:23 AM, Andrei Berceanu
>> wrote:
>>
>> nice, ty!
>> btw, the manual at
>> http://julia.readthedocs.org/en/latest/stdlib/linalg/#Base.repeat says
>> repeat(*A*, *inner = Int*, []*outer = Int*
14 4:06:22 PM UTC+2, John Myles White wrote:
>
> repeat([1, 2, 3], inner = [2])
>
> On Jul 29, 2014, at 7:03 AM, Andrei Berceanu > wrote:
>
> > Whats the easiest way of going from an array
> > [1,2,3] -> [1,1,2,2,3,3]
> > i.e. repeating all elements 2 (or more generally, n) times?
> >
> > A
>
>
Whats the easiest way of going from an array
[1,2,3] -> [1,1,2,2,3,3]
i.e. repeating all elements 2 (or more generally, n) times?
A
Thanks guys, works like a charm!
A
On Wednesday, July 23, 2014 4:32:56 PM UTC+2, Tim Holy wrote:
>
> A[end:-1:1, ...]
>
> On Wednesday, July 23, 2014 07:07:20 AM Andrei Berceanu wrote:
> > Hi guys,
> >
> > I have 2 short numpy-related questions.
> >
Hi guys,
I have 2 short numpy-related questions.
In numpy, if one can invert an arbitrary array *arr* along a given axis
using the syntax
*arr[::-1,...]*
What is the equivalent idiom in Julia?
The other issue is, how can I truncate an array between a lower and upper
bound?
In numpy, thi
Hi guys,
I would like to include a couple of .png images in a notebook with IJulia -
what is the simplest way of doing that? On one hand there is the ImageView
package, but that seems to be geared towards the terminal? Perhaps I can
include them directly in a markdown cell?
ty,
A
at64,2}:
> -70.0 -70.0 3.0982e-10
> -69.4531 -70.0 2.54816e-10
> -68.9063 -70.0 2.23406e-10
>
> julia> readdlm("fl", Float64)
> 3x3 Array{Float64,2}:
> -70.0 -70.0 3.0982e-10
> -69.4531 -70.0 2.54816e-10
> -68.9063 -70.0 2.2340
Here are a few lines from one of my files, after sed preprocessing:
-70.0 -70.0 3.098203380460164E-010
-69.453125000 -70.0 2.548160684589544E-010
-68.90625 -70.0 2.234061987906998E-010
There are
Here is 1 line from one of my files, after sed-magic:
-70.0 -70.0 3.098203380460164E-010
-69.453125000 -70.0 2.548160684589544E-010
-68.90625 -70.0 2.234061987906998E-010
There are 2 spaces at th
file with the string “.copy”
> appended to the name, and then replaces all occurences of D with E (or e,
> or whatever you need) using sed.
>
> // T
> On Friday, July 18, 2014 12:51:32 PM UTC+2, Andrei Berceanu wrote:
>
> I would prefer to keep my original files
M UTC+2, Ivar Nesje wrote:
>
> If you have a reasonable editor, you should be able to open all your files
> and issue a global search and replace operation that changes D to E. If you
> have many files you can use sed to automate the process.
>
> kl. 11:41:12 UTC+2 fredag 1
le, wheres mine are 2-variable functions.
On Thursday, July 17, 2014 7:53:38 PM UTC+2, Steven G. Johnson wrote:
>
>
>
> On Thursday, July 17, 2014 9:19:04 AM UTC-4, Andrei Berceanu wrote:
>>
>> I should perhaps mention that this is part of a bigger scheme, to first
>>
Hi all,
I have a lot of datafiles containing numbers in Fortran's double precision
notation (http://math.hawaii.edu/wordpress/fortran-3/#double), i.e.
1.23D-3, instead of the usual E scientific notation.
Is there a simple way to import the data as Float64?
Tnx!
Andrei
I should perhaps mention that this is part of a bigger scheme, to first
find all the poles of G(x,y)/F(x,y) and then use the residue theorem for
solving a complex integral of the type
integral( G(x,y)/F(x,y), (x,y))
On Thursday, July 17, 2014 3:15:45 PM UTC+2, Andrei Berceanu wrote:
>
&
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