Re: [sympy] Solution of small system of equations grows past manageability

Sorry if i am being imprecise, but actually i cant describe it better than in my opening post. I want X, Y and Phi in terms of everything else. Maybe i was wrong in assuming that i could simply pass sympy the system of equations and it would deliver the solutions in a form that i could then

Re: [sympy] Solution of small system of equations grows past manageability

On 14 June 2016 at 20:30, wrote: > I had the same idea earlier, but i dropped it because my intuition was, that > three quadratic equations are worse than three linear and one quadratic > equation :-) > > Since you brought this approach up again, i tried it now, but

Re: [sympy] Solution of small system of equations grows past manageability

I had the same idea earlier, but i dropped it because my intuition was, that three quadratic equations are worse than three linear and one quadratic equation :-) Since you brought this approach up again, i tried it now, but sympy does not seem to find a solution. You can check out my code

Re: [sympy] Solution of small system of equations grows past manageability

On 11 June 2016 at 17:52, wrote: > > Yes, exactly, its the linear bearings that can be at different locations and > force therefore the board to different positions, those are the ones that i > am interested in! Rather than thinking about x, y and theta think about the

Re: [sympy] Solution of small system of equations grows past manageability

Yes, exactly, its the linear bearings that can be at different locations and force therefore the board to different positions, those are the ones that i am interested in! On Saturday, June 11, 2016 at 6:49:34 PM UTC+2, Jason Moore wrote: > > If the blue dots are fixed on the board, doesn't the

Re: [sympy] Solution of small system of equations grows past manageability

If the blue dots are fixed on the board, doesn't the linear bearings remove all degrees of freedom? I don't see how this thing can move. Jason moorepants.info +01 530-601-9791 On Sat, Jun 11, 2016 at 8:57 AM, wrote: > They describe the location of the board (the blue

Re: [sympy] Solution of small system of equations grows past manageability

They describe the location of the board (the blue rectangle) in relation to its "normal" position by a rotation about an angle of phi and a translation of x and y. On Saturday, June 11, 2016 at 5:40:26 PM UTC+2, Jason Moore wrote: > > Where are phi, x, y on the diagram? > > > Jason >

Re: [sympy] Solution of small system of equations grows past manageability

Where are phi, x, y on the diagram? Jason moorepants.info +01 530-601-9791 On Sat, Jun 11, 2016 at 6:35 AM, wrote: > I guess its hard to get from my description, so i uploaded a drawing to > visualize the physical problem: http://pasteboard.co/1Bvt53hY.png > > Thanks

Re: [sympy] Solution of small system of equations grows past manageability

I guess its hard to get from my description, so i uploaded a drawing to visualize the physical problem: http://pasteboard.co/1Bvt53hY.png Thanks for your interest! On Saturday, June 11, 2016 at 3:13:52 PM UTC+2, janosc...@gmail.com wrote: > > > Physically, the rows of A are three points fixed

Re: [sympy] Solution of small system of equations grows past manageability

Physically, the rows of A are three points fixed on a movable board. These points run freely in three linear bearings which are placed on a fixed base. The linear bearings are described in hesse normal form in the rows of matrix C. The robust motion matrix B is the transformation which

Re: [sympy] Solution of small system of equations grows past manageability

Physically what are all the matrices. Do A and C also describe rotations. Please give the actual physics problem as well as the resulting math. On Sat, Jun 11, 2016 at 6:37 AM, wrote: > My description was a little compressed, so i had to clean up the code to > match my

Re: [sympy] Solution of small system of equations grows past manageability

My description was a little compressed, so i had to clean up the code to match my description again ... The code is available here: http://pastebin.com/MMW3B88h I hope its readable for you. Am Donnerstag, 9. Juni 2016 20:24:35 UTC+2 schrieb Jason Moore: > > Can you please share the code so we

Re: [sympy] Solution of small system of equations grows past manageability

Can you please share the code so we can see what you are doing? Jason moorepants.info +01 530-601-9791 On Wed, Jun 8, 2016 at 11:58 PM, wrote: > I am trying to solve a system of equations with sympy that arises from a > constraint of the form: > > (A x B) x C = D >

[sympy] Solution of small system of equations grows past manageability

I am trying to solve a system of equations with sympy that arises from a constraint of the form: (A x B) x C = D where * A, B, C and D are 3x3 matrices * the diagonal of D should be zero * B is a "rigid motion 2D" transformation, with elements cos(phi), +-sin(phi), x and y * A and C are