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From: SourceForge.net <noreply@so...>  20100107 18:55:13

Bugs item #2927429, was opened at 20100107 10:39 Message generated for change (Settings changed) made by riotorto You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=104933&aid=2927429&group_id=4933 Please note that this message will contain a full copy of the comment thread, including the initial issue submission, for this request, not just the latest update. Category: Tests Group: None >Status: Closed >Resolution: Wont Fix Priority: 5 Private: No Submitted By: Stas (newhippie) Assigned to: Nobody/Anonymous (nobody) Summary: Simplification of units do not work always Initial Comment: Hi, I am using maxima 5.9.2. wihile using the "unit" package it is not possible to do som operations. For example: (i1) load(unit); (o1) ... (i2) a:2*Hz/3*s; (o2) 2/3 (i3) sqrt(a); (o3) CLIENT: Lost socket connection ... Restart Maxima with 'Maxima>Restart Maxima'. It is a general behaviour when unsing to different dimensions, which are normaly simplifyed to 1. The same thing happens by cm/m of kg/g. Is there a way to tell maxima to use only the number of an variable and not the units? The bad thing is, that the standard mathematical opperations are possible: in the example before it could be: a+a or a*a ... The error happens by sqrt and ^. I have not tested other things yet. Someone an idea?  Comment By: Stas (newhippie) Date: 20100107 19:15 Message: Oh, sorry. I mean 5.19.2. In fact, I'm now using ezunits. Thanks to you.  Comment By: Mario Rodriguez Riotorto (riotorto) Date: 20100107 13:07 Message: Hello, You are using a very old version of Maxima; I suggest you update it. In any case, I think package units is no longer maintained, but you can use package ezunits instead: Maxima 5.20post http://maxima.sourceforge.net using Lisp CLISP 2.44.1 (20080223) Distributed under the GNU Public License. See the file COPYING. Dedicated to the memory of William Schelter. The function bug_report() provides bug reporting information. (%i1) display2d : false $ (%i2) load(ezunits) $ (%i3) a:2/3 `Hz/s; (%o3) 2/3 ` Hz/s (%i4) b : sqrt(a); (%o4) sqrt(2)/sqrt(3) ` sqrt(Hz)/sqrt(s) (%i5) b ``fundamental_units(b); 0 errors, 0 warnings ezunits: computing conversions to base units; may take a moment. (%o5) sqrt(2)/sqrt(3) ` 1/s  Mario  You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=104933&aid=2927429&group_id=4933 
From: SourceForge.net <noreply@so...>  20100107 18:15:38

Bugs item #2927429, was opened at 20100107 10:39 Message generated for change (Comment added) made by newhippie You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=104933&aid=2927429&group_id=4933 Please note that this message will contain a full copy of the comment thread, including the initial issue submission, for this request, not just the latest update. Category: Tests Group: None Status: Pending Resolution: Postponed Priority: 5 Private: No Submitted By: Stas (newhippie) Assigned to: Nobody/Anonymous (nobody) Summary: Simplification of units do not work always Initial Comment: Hi, I am using maxima 5.9.2. wihile using the "unit" package it is not possible to do som operations. For example: (i1) load(unit); (o1) ... (i2) a:2*Hz/3*s; (o2) 2/3 (i3) sqrt(a); (o3) CLIENT: Lost socket connection ... Restart Maxima with 'Maxima>Restart Maxima'. It is a general behaviour when unsing to different dimensions, which are normaly simplifyed to 1. The same thing happens by cm/m of kg/g. Is there a way to tell maxima to use only the number of an variable and not the units? The bad thing is, that the standard mathematical opperations are possible: in the example before it could be: a+a or a*a ... The error happens by sqrt and ^. I have not tested other things yet. Someone an idea?  Comment By: Stas (newhippie) Date: 20100107 19:15 Message: Oh, sorry. I mean 5.19.2. In fact, I'm now using ezunits. Thanks to you.  Comment By: Mario Rodriguez Riotorto (riotorto) Date: 20100107 13:07 Message: Hello, You are using a very old version of Maxima; I suggest you update it. In any case, I think package units is no longer maintained, but you can use package ezunits instead: Maxima 5.20post http://maxima.sourceforge.net using Lisp CLISP 2.44.1 (20080223) Distributed under the GNU Public License. See the file COPYING. Dedicated to the memory of William Schelter. The function bug_report() provides bug reporting information. (%i1) display2d : false $ (%i2) load(ezunits) $ (%i3) a:2/3 `Hz/s; (%o3) 2/3 ` Hz/s (%i4) b : sqrt(a); (%o4) sqrt(2)/sqrt(3) ` sqrt(Hz)/sqrt(s) (%i5) b ``fundamental_units(b); 0 errors, 0 warnings ezunits: computing conversions to base units; may take a moment. (%o5) sqrt(2)/sqrt(3) ` 1/s  Mario  You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=104933&aid=2927429&group_id=4933 
From: SourceForge.net <noreply@so...>  20100107 12:57:49

Bugs item #2927502, was opened at 20100107 15:57 Message generated for change (Tracker Item Submitted) made by s_i_m You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=104933&aid=2927502&group_id=4933 Please note that this message will contain a full copy of the comment thread, including the initial issue submission, for this request, not just the latest update. Category: Lisp Core  Complex Group: None Status: Open Resolution: None Priority: 5 Private: No Submitted By: Stanislav Maslovski (s_i_m) Assigned to: Nobody/Anonymous (nobody) Summary: abs() or cabs() are much slower than just sqrt(re^2+im^2) Initial Comment: Doing some calculations I noticed that there is something wrong with imlementation of abs() and cabs(). Basically, in the code below I can calculate and plot sqrt(re^2 + im^2), but I cannot do it with abs(), nor with cabs(): it never finishes and Maxima does not react to the keyboard interrupt either. I run this version of maxima (on Debian sid): Maxima 5.20.1 http://maxima.sourceforge.net using Lisp GNU Common Lisp (GCL) GCL 2.6.7 (a.k.a. GCL) ======================================================== eps : [1,2]; mu : [1,1]; n : sqrt(eps*mu); vc : [0,0.5]; epst : eps*(1vc^2)/(1n^2*vc^2); mut : mu*(1vc^2)/(1n^2*vc^2); a : vc*(n^21)/(1n^2*vc^2); kxe : %i*sqrt(k0^2*eps*mut+eps/epst*(kz+k0*a)^2+ky^2); kxh : %i*sqrt(k0^2*mu*epst+mu/mut*(kz+k0*a)^2+ky^2); betae : k0*kxe*epst/(k0^2*epst*mut(kz+k0*a)^2); betah : k0*kxh*mut/(k0^2*epst*mut(kz+k0*a)^2); alpha : ky*(kz+k0*a)/(k0^2*epst*mut(kz+k0*a)^2); a1 : part(alpha,1); a2 : part(alpha,2); be1 : part(betae,1); be2 : part(betae,2); bh1 : part(betah,1); bh2 : part(betah,2); denom : (a1a2)^2+(be1+be2)*(bh1+bh2); Ree : ((a1a2)^2(be1be2)*(bh1+bh2))/denom; plot3d(sqrt(realpart(subst(k0=%i,Ree))^2+imagpart(subst(k0=%i,Ree))^2),[ky,3,3],[kz,3,3]); plot3d(cabs(subst(k0=%i,Ree)),[ky,3,3],[kz,3,3]); plot3d(abs(subst(k0=%i,Ree)),[ky,3,3],[kz,3,3]);  You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=104933&aid=2927502&group_id=4933 
From: SourceForge.net <noreply@so...>  20100107 12:07:57

Bugs item #2927429, was opened at 20100107 10:39 Message generated for change (Comment added) made by riotorto You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=104933&aid=2927429&group_id=4933 Please note that this message will contain a full copy of the comment thread, including the initial issue submission, for this request, not just the latest update. Category: Tests Group: None >Status: Pending >Resolution: Postponed Priority: 5 Private: No Submitted By: Stas (newhippie) Assigned to: Nobody/Anonymous (nobody) Summary: Simplification of units do not work always Initial Comment: Hi, I am using maxima 5.9.2. wihile using the "unit" package it is not possible to do som operations. For example: (i1) load(unit); (o1) ... (i2) a:2*Hz/3*s; (o2) 2/3 (i3) sqrt(a); (o3) CLIENT: Lost socket connection ... Restart Maxima with 'Maxima>Restart Maxima'. It is a general behaviour when unsing to different dimensions, which are normaly simplifyed to 1. The same thing happens by cm/m of kg/g. Is there a way to tell maxima to use only the number of an variable and not the units? The bad thing is, that the standard mathematical opperations are possible: in the example before it could be: a+a or a*a ... The error happens by sqrt and ^. I have not tested other things yet. Someone an idea?  >Comment By: Mario Rodriguez Riotorto (riotorto) Date: 20100107 13:07 Message: Hello, You are using a very old version of Maxima; I suggest you update it. In any case, I think package units is no longer maintained, but you can use package ezunits instead: Maxima 5.20post http://maxima.sourceforge.net using Lisp CLISP 2.44.1 (20080223) Distributed under the GNU Public License. See the file COPYING. Dedicated to the memory of William Schelter. The function bug_report() provides bug reporting information. (%i1) display2d : false $ (%i2) load(ezunits) $ (%i3) a:2/3 `Hz/s; (%o3) 2/3 ` Hz/s (%i4) b : sqrt(a); (%o4) sqrt(2)/sqrt(3) ` sqrt(Hz)/sqrt(s) (%i5) b ``fundamental_units(b); 0 errors, 0 warnings ezunits: computing conversions to base units; may take a moment. (%o5) sqrt(2)/sqrt(3) ` 1/s  Mario  You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=104933&aid=2927429&group_id=4933 
From: SourceForge.net <noreply@so...>  20100107 09:39:31

Bugs item #2927429, was opened at 20100107 10:39 Message generated for change (Tracker Item Submitted) made by newhippie You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=104933&aid=2927429&group_id=4933 Please note that this message will contain a full copy of the comment thread, including the initial issue submission, for this request, not just the latest update. Category: Tests Group: None Status: Open Resolution: None Priority: 5 Private: No Submitted By: Stas (newhippie) Assigned to: Nobody/Anonymous (nobody) Summary: Simplification of units do not work always Initial Comment: Hi, I am using maxima 5.9.2. wihile using the "unit" package it is not possible to do som operations. For example: (i1) load(unit); (o1) ... (i2) a:2*Hz/3*s; (o2) 2/3 (i3) sqrt(a); (o3) CLIENT: Lost socket connection ... Restart Maxima with 'Maxima>Restart Maxima'. It is a general behaviour when unsing to different dimensions, which are normaly simplifyed to 1. The same thing happens by cm/m of kg/g. Is there a way to tell maxima to use only the number of an variable and not the units? The bad thing is, that the standard mathematical opperations are possible: in the example before it could be: a+a or a*a ... The error happens by sqrt and ^. I have not tested other things yet. Someone an idea?  You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=104933&aid=2927429&group_id=4933 