answer // further // Benchmark - 64 bit much slower than 32 bit In case any one else runs into a similar problem, I sorted out the answer to the slowness below. I pulled out one memory strip to drop from 8 MB to 6 MB and, presto, performance went from slow (rating of 1.13) to ultrafast (rating of 5.50). How to explain this? I believe it goes back to "following the manufa... 13 Aug 2010 07:02
Syntax coloring If I change this: If[a > 1, Do[Print[i], {i, 1, 10}]; ]; to this: If[a > 1, Do[Print[i], {i, 1, 10}]; (*end do*) ]; then, the semicolon right before the comment (*end do*) turns magenta. But if I remove the very LAST semicolon and then type it again, the magenta turns black. Do others see ... 13 Aug 2010 07:02
Problem with using Symbol[] in a loop Can anyone tell me why this works as expected: dirnames = Names["$*Directory*"]; For[i = 0, i < Length[dirnames], i++; Print[dirnames[[i]]]] and gives the following results: $AddOnsDirectory $BaseDirectory $HomeDirectory $InitialDirectory $InstallationDirectory ... 13 Aug 2010 07:02
Equation style crash bug 1.. Create a new blank notebook. 2.. Select the stylesheet JournalArticle (I think any other stylesheet with Equation style will do too) 3.. Put the first cell with style Equation and type some equation (anything). 4.. Put the second cell with style Equation and type something else. 5.. Now, put the ... 13 Aug 2010 07:02
Repost - help with list manipulation Hi - This is my first post. I am a long time mathematica user, but I still end up getting stuck on some things... I have used the Table function to generate output from the Solve function for a range of values... case1 = Table[sol3 = Solve[{ f == m*a, -M + f*r == I*b, a == b*r}, {f,a, b}], {M, 1, 17}]; I... 13 Aug 2010 07:02
Manipulating a table Hi - This is my first post. I am a long time mathematica user, but I still end up getting stuck on some things... I have used the Table function to generate output from the Solve function for a range of values... f = f /. case1 This generates a list, but I end up with double {{ and I can not figure out h... 13 Aug 2010 07:02
further // Benchmark - 64 bit much slower than 32 On 8/12/2010 4:30 AM, Scot T. Martin wrote: This issue is more subtle than outlined in the last email because I ran Benchmark[] on yet another computer that also has Windows 7 64-bit and got very good results. Here is a full comparison --- any insights on the slow one? **** FASTEST **** Intel(R) Co... 13 Aug 2010 07:02
Straightforward factoring and simplification Some time back there was a post in this group about how to convert the expression (Eq_1) � a*b + a*c - 2*a*d + b*c - 2*b*d - 2*c*d + 3*d^2 into (Eq_2) � (a-d)*(b-d) + (a-d)*(c-d) + (b-d)*(c-d) to which I made an absurd response. My meds are working better now, so I hope the following will make sense.... 13 Aug 2010 07:02
Can I set Page Setup scale for a notebook programmatically? I am trying to do exactly what is described in this older post. Garapata, did you figure this out? Or did you come up with an alternative method? Nate On Sat, Feb 13, 2010 at 5:21 AM, Garapata <warsaw95826 (a)mypacks.net> wrote: I generate a notebook from a first notebook using: CreateDocument[ {...
13 Aug 2010 07:02
Problem with renaming Mathematica path on Mac OS X Am running Mathematica on Mac OS X system and I had installed it into the folder /Applications/Wolfram/Mathematica 7.0.1.app But this caused a problem with trying to do something with LinkSnooper, so I tried to just rename it to: /Applications/Wolfram/Mathematica_7.0.1.app but now I get an error ... 13 Aug 2010 07:02
further // Benchmark - 64 bit much slower than 32 bit (fwd) This issue is more subtle than outlined in the last email because I ran Benchmark[] on yet another computer that also has Windows 7 64-bit and got very good results. Here is a full comparison --- any insights on the slow one? **** FASTEST **** Intel(R) Core(TM) i5 CPU 650 @3.20GHz, 8.00 GB === System Inform... 12 Aug 2010 06:01
Problem using LinkSnooper when Mathematica pathname contains a space Does anyone know how to set up a "LinkSnooper" kernel when the application path has a space as part of the pathname? I tried to precede the space with a backslash, but no luck. Here is the command I am trying to get working: -LinkMode Launch -LinkName "java -cp /Applications/Wolfram/Mathematica \ 7.0.1.app/Sys... 13 Aug 2010 07:02
Is it possible to dump the info in "Options Inspector" or search it? I am wondering if it's possible to either dump ALL the information in "Options Inspector" (For the "Global" scope if it matters) to a file that I can search for something, or is it possible to search the values of the options (not the option names or variables like it works presently, but what their values contain)... 12 Aug 2010 06:01
Benchmark - 64 bit much slower than 32 bit Folks, just installed Mathematica on new Windows 7 64-bit machine and Benchmark[] is much slower than on 32-bit Windows XP. MathematicaMark7 Rating of new system is 1.13 compared to 4.12 of old system. Any explanations for this? Details are below. Are many of Mathematica's routines still in 32-bit and thus slo... 12 Aug 2010 06:01
MathWorld MapProjections MathWorld has an entry for "Stereographic Projections" at <http://mathworld.wolfram.com/StereographicProjection.html>. I downloaded the notebook there, but it fails on the very first input: << MathWorld`MapProjections` I've searched around on the web, but only find a short thread indicating that others have al... 12 Aug 2010 06:01 |