Mathematica

which values of m satisfies the inequality
for what value or interval of m (-infinity < m < infinity) the following is valid (1+x)^(m+1) > (1+x^m)* 2^m here x >=1 ... 25 Oct 2009 02:20

FromAdjacencyMatrix / FromAdjacencyLists - broken? Workaround?
Hello group, This question seems to have been touched on in the past but I'm not sure if it has ever been definitively answered. I would be grateful for some advice! I have some data that I would like to explore. It concerns a set of directed graphs, without edge weights. The data comes to me as the correspon... 27 Oct 2009 07:00

Mathematica blogs
Well I suppose it's worth pointing out that my blogs http://scientificarts.com/worklife/wlfwblog/ and http://www.scientificarts.com/mathematicatools/blog/ are created directly from Mathematica.... --David On Oct 21, 6:30 am, "M.Roellig" <markus.roel...(a)googlemail.com> wrote: Dear group, i... 1 Nov 2009 04:35

Mapping colours in DensityPlot
I am using the following command to do a DensityPlot in grayscale. The grayscale range is from 0-255, but I need to map my function to a grey-level maximum of 200. How do I define a new GrayLevel with a max gray level of 200? (Or alternately change the mapping so make the max level 200?) DensityPlot[Mod[el... 22 Oct 2009 03:04

options for VectorPlot in version 7 vs VectorFieldPlot in version
Hi Janey in yor case this may help. field=VectorPlot[{f[x,y],g[x,y]},{x,0,70},{y,0,2400},VectorPoints-> {15,15},Frame->True,AspectRatio->1,VectorScale->{.001,2,Automatic}] The behaviour of the new VectorPlot is not very enjoining with respect to compatibility to the old VectorFieldPlot. What is missin... 21 Oct 2009 07:05

Mathematica7 doesn't copy/paste metafile in vector format
Hi all, I recently found that Mathematica 7 doesn't copy/paste metafile in vector format anymore, as compared to Mathematica 5.2 Although I could still Copy As > Metafile in Mathematica 7, pasting it into Office 2007 will result in rasterized bitmap image. Rasterized bitmap image means low resolution and bad q... 29 Oct 2009 04:23

JLink broken on Snow Leopard
Hi, I have written an app that connects to Mathematica kernel via JLink. The app no longer worked after I upgraded to Snow Leopard. Running the JLink SampleProgram returns following error: Fatal error: cannot find the required native library named JLinkNativeLibrary. Exception in thread "main" java.lang.Unsa... 26 Oct 2009 01:17

Question on Dynamic with "DockedCell"
Folk, I'm attempting to create a dynamically-appearing set of choices/menus using ButtonBar in a notebook window but I've been unable to get the desired affect to date. I've cobbled together the following code which almost does what I'm looking for but I could use some pointers in getting the rest of the way. T... 22 Oct 2009 03:04

Multi-Colored Filling in DateListPlot
I am working on developing some financial reports and I have gotten stuck on using multiple colors in the filling of a DateListPlot. I would like to have the color of the filling alternate between blue and pink each quarter (or year depending on the plot) rather than a single color in the entire filling. Here is an... 22 Oct 2009 03:04

Help needed for exporting graphplot3d to dxf
Hi, I have a notebook that uses an parsing algorithm to generate a network surface based on cellular automata rules. The problem I am having is when using graphplot3d I cant seem to be able to export it to a dxf file, which is what I need. Here is the lines of codes producing the graph: ca = 23; init = 1; s... 16 Oct 2009 07:28