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From: Mohammad on 18 Jun 2010 12:40 Hi guys. I currently have a plotting function, trail5(m,n,o) where I want to make sure that at any time m+n+o=integer. I also want to make trail5(m,n,o)=plot with values of 1 through d in stems of 1/2, 1 through g in stems of 1/2, 1 through h in stems of 1/2, in order to make many copies of my image. (I input d,g,h as a boundary) For the m+n+o=integer part, I've tried to build off a suggestion of a nested for loop: for m=1:.5:d for n=1:.5:g for o=1:.5:h V = n+m+o; if V~=floor(V) trail5(m,n,o) %what I want to solve for in every possible value of m,n,o end end end end Is there a simple way to fix this so that trail5(m,n,o) works, and so that m+n+o=integer? Thanks! Cordially, Mohammad
From: Matt Fig on 18 Jun 2010 12:55 Did you read post #8 in your previous thread on the same exact topic? Notice the change from ~= to ==. http://www.mathworks.com/matlabcentral/newsreader/view_thread/284868
From: Mohammad on 18 Jun 2010 13:25 "Matt Fig" <spamanon(a)yahoo.com> wrote in message <hvg8dp$9nq$1(a)fred.mathworks.com>... > Did you read post #8 in your previous thread on the same exact topic? Notice the change from ~= to ==. > > http://www.mathworks.com/matlabcentral/newsreader/view_thread/284868 Oops, thanks!, I'll look it over. BTW, nice function name :)
From: John D'Errico on 18 Jun 2010 13:29 "Mohammad " <jaber2(a)uni.uiuc.edu> wrote in message <hvg7hl$emv$1(a)fred.mathworks.com>... > Hi guys. > > I currently have a plotting function, trail5(m,n,o) where I want to make sure that at any time m+n+o=integer. I also want to make trail5(m,n,o)=plot with values of 1 through d in stems of 1/2, 1 through g in stems of 1/2, 1 through h in stems of 1/2, in order to make many copies of my image. (I input d,g,h as a boundary) > > For the m+n+o=integer part, I've tried to build off a suggestion of a nested for loop: > > for m=1:.5:d > for n=1:.5:g > for o=1:.5:h > V = n+m+o; > if V~=floor(V) > trail5(m,n,o) %what I want to solve for in every possible value of m,n,o > end > end > end > end > > Is there a simple way to fix this so that trail5(m,n,o) works, and so that m+n+o=integer? > Gosh. Think. Suppose I knew the values of m and n? Would I be able to compute EXACTLY which values of o would assuredly generate an integer in the aggregate value (m+n+o)? So why not just loop over m and n? Can you do even better? Suppose I knew the value of m? I.e., you know that it is either already an integer, so either both n and o must be integers, or both n and o must be half integers. This allows you to employ only a single loop, coupled with two calls to meshgrid. Of course, if things are small enough, just make one call to meshgrid, or ndgrid, and test the sum. John
From: Mohammad on 18 Jun 2010 13:33
"Matt Fig" <spamanon(a)yahoo.com> wrote in message <hvg8dp$9nq$1(a)fred.mathworks.com>... > Did you read post #8 in your previous thread on the same exact topic? Notice the change from ~= to ==. > > http://www.mathworks.com/matlabcentral/newsreader/view_thread/284868 I inserted that clause toward the end, but when I inserted values n=1.5 m=2.5 o=3.5, the program ran and the object appeared (which is what I don't want?). Cordially, Mohammad (here's the program I ran in MATLAB... function trail5(d,g,h) L = input('Please enter value of L. [L]: '); R = input('Please enter value of R. [R]: '); d = input('Please enter value of a. [a]: '); g = input('Please enter value of b. [b]: '); h = input('Please enter value of c. [c]: '); patch('vertices',[.5*L+(sqrt(2)*R+2*L)*d .5*L+(sqrt(2)*R+2*L)*g 0+(sqrt(2)*R+2*L)*h -.5*L+(sqrt(2)*R+2*L)*d .5*L+(sqrt(2)*R+2*L)*g 0+(sqrt(2)*R+2*L)*h -.5*L+(sqrt(2)*R+2*L)*d -.5*L+(sqrt(2)*R+2*L)*g 0+(sqrt(2)*R+2*L)*h ..5*L+(sqrt(2)*R+2*L)*d -.5*L+(sqrt(2)*R+2*L)*g 0+(sqrt(2)*R+2*L)*h sqrt(.5)*R+.5*L+(sqrt(2)*R+2*L)*d .5*L+(sqrt(2)*R+2*L)*g sqrt(.5)*R+(sqrt(2)*R+2*L)*h -sqrt(.5)*R-.5*L+(sqrt(2)*R+2*L)*d .5*L+(sqrt(2)*R+2*L)*g sqrt(.5)*R+(sqrt(2)*R+2*L)*h -sqrt(.5)*R-.5*L+(sqrt(2)*R+2*L)*d -.5*L+(sqrt(2)*R+2*L)*g sqrt(.5)*R+(sqrt(2)*R+2*L)*h sqrt(.5)*R+.5*L+(sqrt(2)*R+2*L)*d -.5*L+(sqrt(2)*R+2*L)*g sqrt(.5)*R+(sqrt(2)*R+2*L)*h ..5*L+(sqrt(2)*R+2*L)*d sqrt(.5)*R+.5*L+(sqrt(2)*R+2*L)*g sqrt(.5)*R+(sqrt(2)*R+2*L)*h ..5*L+(sqrt(2)*R+2*L)*d -sqrt(.5)*R-.5*L+(sqrt(2)*R+2*L)*g sqrt(.5)*R+(sqrt(2)*R+2*L)*h -.5*L+(sqrt(2)*R+2*L)*d sqrt(.5)*R+.5*L+(sqrt(2)*R+2*L)*g sqrt(.5)*R+(sqrt(2)*R+2*L)*h -.5*L+(sqrt(2)*R+2*L)*d -sqrt(.5)*R-.5*L+(sqrt(2)*R+2*L)*g sqrt(.5)*R+(sqrt(2)*R+2*L)*h -sqrt(.5)*R-.5*L+(sqrt(2)*R+2*L)*d .5*L+(sqrt(2)*R+2*L)*g sqrt(.5)*R+L+(sqrt(2)*R+2*L)*h sqrt(.5)*R+.5*L+(sqrt(2)*R+2*L)*d .5*L+(sqrt(2)*R+2*L)*g sqrt(.5)*R+L+(sqrt(2)*R+2*L)*h -sqrt(.5)*R-.5*L+(sqrt(2)*R+2*L)*d -.5*L+(sqrt(2)*R+2*L)*g sqrt(.5)*R+L+(sqrt(2)*R+2*L)*h sqrt(.5)*R+.5*L+(sqrt(2)*R+2*L)*d -.5*L+(sqrt(2)*R+2*L)*g sqrt(.5)*R+L+(sqrt(2)*R+2*L)*h ..5*L+(sqrt(2)*R+2*L)*d -sqrt(.5)*R-.5*L+(sqrt(2)*R+2*L)*g sqrt(.5)*R+L+(sqrt(2)*R+2*L)*h -.5*L+(sqrt(2)*R+2*L)*d -sqrt(.5)*R-.5*L+(sqrt(2)*R+2*L)*g sqrt(.5)*R+L+(sqrt(2)*R+2*L)*h ..5*L+(sqrt(2)*R+2*L)*d sqrt(.5)*R+.5*L+(sqrt(2)*R+2*L)*g sqrt(.5)*R+L+(sqrt(2)*R+2*L)*h -.5*L+(sqrt(2)*R+2*L)*d sqrt(.5)*R+.5*L+(sqrt(2)*R+2*L)*g sqrt(.5)*R+L+(sqrt(2)*R+2*L)*h -.5*L+(sqrt(2)*R+2*L)*d .5*L+(sqrt(2)*R+2*L)*g sqrt(2)*R+L+(sqrt(2)*R+2*L)*h ..5*L+(sqrt(2)*R+2*L)*d .5*L+(sqrt(2)*R+2*L)*g sqrt(2)*R+L+(sqrt(2)*R+2*L)*h -.5*L+(sqrt(2)*R+2*L)*d -.5*L+(sqrt(2)*R+2*L)*g sqrt(2)*R+L+(sqrt(2)*R+2*L)*h ..5*L+(sqrt(2)*R+2*L)*d -.5*L+(sqrt(2)*R+2*L)*g sqrt(2)*R+L+(sqrt(2)*R+2*L)*h ],'faces',[6 11 2 NaN 21 20 13 NaN 1 9 5 NaN 19 22 14 NaN 4 8 10 NaN 7 3 12 NaN 23 15 18 NaN 17 16 24 NaN],'facecolor',[1 1 0]); patch('vertices',[.5*L+(sqrt(2)*R+2*L)*d .5*L+(sqrt(2)*R+2*L)*g 0+(sqrt(2)*R+2*L)*h -.5*L+(sqrt(2)*R+2*L)*d .5*L+(sqrt(2)*R+2*L)*g 0+(sqrt(2)*R+2*L)*h -.5*L+(sqrt(2)*R+2*L)*d -.5*L+(sqrt(2)*R+2*L)*g 0+(sqrt(2)*R+2*L)*h ..5*L+(sqrt(2)*R+2*L)*d -.5*L+(sqrt(2)*R+2*L)*g 0+(sqrt(2)*R+2*L)*h sqrt(.5)*R+.5*L+(sqrt(2)*R+2*L)*d .5*L+(sqrt(2)*R+2*L)*g sqrt(.5)*R+(sqrt(2)*R+2*L)*h -sqrt(.5)*R-.5*L+(sqrt(2)*R+2*L)*d .5*L+(sqrt(2)*R+2*L)*g sqrt(.5)*R+(sqrt(2)*R+2*L)*h -sqrt(.5)*R-.5*L+(sqrt(2)*R+2*L)*d -.5*L+(sqrt(2)*R+2*L)*g sqrt(.5)*R+(sqrt(2)*R+2*L)*h sqrt(.5)*R+.5*L+(sqrt(2)*R+2*L)*d -.5*L+(sqrt(2)*R+2*L)*g sqrt(.5)*R+(sqrt(2)*R+2*L)*h ..5*L+(sqrt(2)*R+2*L)*d sqrt(.5)*R+.5*L+(sqrt(2)*R+2*L)*g sqrt(.5)*R+(sqrt(2)*R+2*L)*h ..5*L+(sqrt(2)*R+2*L)*d -sqrt(.5)*R-.5*L+(sqrt(2)*R+2*L)*g sqrt(.5)*R+(sqrt(2)*R+2*L)*h -.5*L+(sqrt(2)*R+2*L)*d sqrt(.5)*R+.5*L+(sqrt(2)*R+2*L)*g sqrt(.5)*R+(sqrt(2)*R+2*L)*h -.5*L+(sqrt(2)*R+2*L)*d -sqrt(.5)*R-.5*L+(sqrt(2)*R+2*L)*g sqrt(.5)*R+(sqrt(2)*R+2*L)*h -sqrt(.5)*R-.5*L+(sqrt(2)*R+2*L)*d .5*L+(sqrt(2)*R+2*L)*g sqrt(.5)*R+L+(sqrt(2)*R+2*L)*h sqrt(.5)*R+.5*L+(sqrt(2)*R+2*L)*d .5*L+(sqrt(2)*R+2*L)*g sqrt(.5)*R+L+(sqrt(2)*R+2*L)*h -sqrt(.5)*R-.5*L+(sqrt(2)*R+2*L)*d -.5*L+(sqrt(2)*R+2*L)*g sqrt(.5)*R+L+(sqrt(2)*R+2*L)*h sqrt(.5)*R+.5*L+(sqrt(2)*R+2*L)*d -.5*L+(sqrt(2)*R+2*L)*g sqrt(.5)*R+L+(sqrt(2)*R+2*L)*h ..5*L+(sqrt(2)*R+2*L)*d -sqrt(.5)*R-.5*L+(sqrt(2)*R+2*L)*g sqrt(.5)*R+L+(sqrt(2)*R+2*L)*h -.5*L+(sqrt(2)*R+2*L)*d -sqrt(.5)*R-.5*L+(sqrt(2)*R+2*L)*g sqrt(.5)*R+L+(sqrt(2)*R+2*L)*h ..5*L+(sqrt(2)*R+2*L)*d sqrt(.5)*R+.5*L+(sqrt(2)*R+2*L)*g sqrt(.5)*R+L+(sqrt(2)*R+2*L)*h -.5*L+(sqrt(2)*R+2*L)*d sqrt(.5)*R+.5*L+(sqrt(2)*R+2*L)*g sqrt(.5)*R+L+(sqrt(2)*R+2*L)*h -.5*L+(sqrt(2)*R+2*L)*d .5*L+(sqrt(2)*R+2*L)*g sqrt(2)*R+L+(sqrt(2)*R+2*L)*h ..5*L+(sqrt(2)*R+2*L)*d .5*L+(sqrt(2)*R+2*L)*g sqrt(2)*R+L+(sqrt(2)*R+2*L)*h -.5*L+(sqrt(2)*R+2*L)*d -.5*L+(sqrt(2)*R+2*L)*g sqrt(2)*R+L+(sqrt(2)*R+2*L)*h ..5*L+(sqrt(2)*R+2*L)*d -.5*L+(sqrt(2)*R+2*L)*g sqrt(2)*R+L+(sqrt(2)*R+2*L)*h ],'faces',[11 9 1 2 13 20 11 6 23 21 13 15 9 19 14 5 19 20 21 22 1 5 8 4 3 4 10 12 6 2 3 7 15 7 12 18 24 23 18 17 8 16 17 10 16 14 22 24],'facecolor',[1 0 0]); view(3) rotate3d axis equal for m = 1:.5:d; for n = 1:.5:g; for o = 1:.5:h; V = n+m+o; if V == floor(V) disp([m n o V]) trail5(m,n,o); end end end end |