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Ronan

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12 years, 217 days
East Grinstead, United Kingdom
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How to make Exported equations readable ...

Ronan 1207 Maple 2022
matrix exceltools export
June 10 2022
0 0

I have a set of formulas I saved in a matrix and the exported the matrix to Excel. However when I open the file in Excel the equations are in prefix notation (I think).  That's not exactly human readable friendly.  If I copy and paste straight into excel they are readable.

It there a way to make the Maple export similar?

EDIT:-  I exported as a.csv file because if export as .xlsx    all the equation change into "#NUM!" in the spreadsheed.

restart

NULL

Digits := 5

5

 (1)

interface(displayprecision = 5); interface(rtablesize = 30)

5

 (2)

cosrule := proc (a, b, c, A) options operator, arrow; a^2 = b^2+c^2-2*b*c*cos(A) end proc

proc (a, b, c, A) options operator, arrow; a^2 = b^2+c^2-2*b*c*cos(A) end proc

 (3)

Ang := solve(cosrule(a, b, c, A), A)

Pi-arccos((1/2)*(a^2-b^2-c^2)/(b*c))

 (4)

Formulas := Matrix(20, 4)

 

 

 

 

data := [L[1] = 619.35, L[2] = 891.12, pos = 180, tos = 90, x1 = 600, y1 = -800, z1 = 500, x2 = 900, y2 = -200, z2 = 850, `Θt` = 29.34*Pi*(1/180), `Θp` = 53.98*Pi*(1/180)]
 

 

 

 

i := 3

res0 := `ΔZ` = z2-z1; Formulas[i, 1] := lhs(res0); Formulas[i, 2] := rhs(res0)

`ΔZ` = z2-z1

 (5)

res0 := eval(res0, data); Formulas[i, 3] := rhs(res0); Formulas; i := i+1

`ΔZ` = 350

 (6)

res1 := dt[1] = sqrt(tos^2+L[1]^2); Formulas[i, 1] := lhs(res1); Formulas[i, 2] := rhs(res1); res1 := eval(res1, data); Formulas[i, 3] := rhs(res1); Formulas; i := i+1

dt[1] = 625.85

 (7)

NULL

res2 := d[1] = sqrt(pos^2+tos^2+L[1]^2); Formulas[i, 1] := lhs(res2); Formulas[i, 2] := rhs(res2); res2 := eval(res2, data); Formulas[i, 3] := rhs(res2); Formulas; i := i+1

d[1] = 651.22

 (8)

res3 := dt[2] = sqrt(tos^2+L[2]^2); Formulas[i, 1] := lhs(res3); Formulas[i, 2] := rhs(res3); res3 := eval(res3, data); Formulas[i, 3] := rhs(res3); Formulas; i := i+1

dt[2] = 895.65

 (9)

NULL

res4 := d[2] = sqrt(pos^2+tos^2+L[2]^2); Formulas[i, 1] := lhs(res4); Formulas[i, 2] := rhs(res4); res4 := eval(res4, data); Formulas[i, 3] := rhs(res4); Formulas; i := i+1

d[2] = 913.56

 (10)

NULL

res7 := tau = arctan(tos/L[1]); Formulas[i, 1] := lhs(res7); Formulas[i, 2] := rhs(res7); res7 := eval(res7, data); Formulas[i, 3] := rhs(res7); 180*(eval(rhs(`%%`), data))/Pi; Formulas[i, 4] := %; Formulas; i := i+1

8.2678

 (11)

NULL

res8 := rho = arctan(tos/L[2]); Formulas[i, 1] := lhs(res8); Formulas[i, 2] := rhs(res8); res8 := eval(res8, data); Formulas[i, 3] := rhs(res8); 180*(eval(rhs(`%%`), data))/Pi; Formulas[i, 4] := %; Formulas; i := i+1; data := [op(data), res0, res1, res2, res3, res4, res7, res8]

5.7674

 (12)

NULL

res9 := alpha = `Θt`+tau-rho; Formulas[i, 1] := lhs(res9); Formulas[i, 2] := rhs(res9); res9 := eval(res9, data); Formulas[i, 3] := rhs(res9); 180*(eval(rhs(`%%`), data))/Pi; Formulas[i, 4] := %; Formulas; i := i+1; data := [op(data), res9]

31.840

 (13)

NULL

NULL

NULL

res10 := dt[3] = solve(cosrule(dt[3], dt[2], dt[1], alpha), dt[3])[1]; Formulas[i, 1] := lhs(res10); Formulas[i, 2] := rhs(res10); res10 := eval(res10, data); Formulas[i, 3] := rhs(res10); Formulas; i := i+1; data := [op(data), res10]

dt[3] = 491.45

 (14)

NULL

NULL

res11 := beta = solve(cosrule(dt[1], dt[2], dt[3], beta), beta); Formulas[i, 1] := lhs(res11); Formulas[i, 2] := rhs(res11); res11 := eval(res11, data); Formulas[i, 3] := rhs(res11); 180*(eval(rhs(`%%`), data))/Pi; Formulas[i, 4] := %; Formulas; i := i+1; data := [op(data), res11]

42.215

 (15)

NULL

NULL

NULL

NULL

res12 := Zeta = arccos(`ΔZ`/dt[3]); Formulas[i, 1] := lhs(res12); Formulas[i, 2] := rhs(res12); res12 := eval(res12, data); Formulas[i, 3] := rhs(res12); 180*(eval(rhs(`%%`), data))/Pi; Formulas[i, 4] := %; Formulas; i := i+1; data := [op(data), res12]

44.588

 (16)

NULL

NULL

res13 := dt[4] = dt[3]*sin(Zeta); Formulas[i, 1] := lhs(res13); Formulas[i, 2] := rhs(res13); res13 := eval(res13, data); Formulas[i, 3] := rhs(res13); Formulas; i := i+1; data := [op(data), res13]

Matrix(%id = 36893490716944981036)

 (17)

 

``

NULL

``

NULL

currentdir()

"C:\Users\Ronan\Documents\MAPLE\A & Q Maple primes"

 (18)

NULL

with(ExcelTools)

[Export, Import, WorkbookData]

 (19)

NULLExport(Formulas, "Frmls.csv")NULL

Download test_eqn_export.mw

How do I only plot certain points from a...

Ronan 1207 Maple 2021
seq plotting
March 13 2022
3 4

I have a set of points. I only want to plot ones with x and y less that 5 units from [0,0]. I can do it with for do loop. Can't get it to work with seq. Ideally I don't want to create another list.

restart

NULL

points := [[-.4821957161, -.3251957485], [-1.079859775, -1.473869954], [.7429089919, .1649759550], [1.329939269, 0.7259335832e-1], [-.1254930617, .1268183497], [-10.63408888, -2.637665397], [-0.1855663689e-1, .1572001339], [8.963609684, 7.419424024], [.7724026996, .1662719092], [1.278337644, 0.7583092624e-1]]

``

" points2:= [seq('if'(" abs"(points[i,1])<5 and abs(points[i,2])<5, points[i] ,0) ,i=1..10)] "

[[-.4821957161, -.3251957485], [-1.079859775, -1.473869954], [.7429089919, .1649759550], [1.329939269, 0.7259335832e-1], [-.1254930617, .1268183497], [-10.63408888, -2.637665397], [-0.1855663689e-1, .1572001339], `if`(false, [8.963609684, 7.419424024]), [.7724026996, .1662719092], [1.278337644, 0.7583092624e-1]]

 (1)

``

redp := plots:-pointplot(points, colour = red, symbolsize = 4, symbol = solidcircle)

  

plots:-pointplot(points2, colour = red, symbolsize = 4, symbol = solidcircle)

Error, invalid input: `if` expects 3 arguments, but received 2

  

NULL

NULL

Download 13-3-22_remove_points_plotting.mw

Simplify with Side Relations and then ev...

Ronan 1207 Maple 2021
eval simplify
March 06 2022
1 0

I simplified a vector column using side relations. Then I wanted to evaluate using

eval( equation,  [x1=3,  x2=5......})

But side relations uses the reverse order i.e. after evaluation

[3=x1, 5=x2......]

So then the internals of the list need to be swaped tto work with eval.That is easy. I am just wondering is there a neater way to achieve this?

restart

NULL

P1 := Vector(3, {(1) = -(y[1]-y[3])*(y[2]-y[3])*((x[2]^2-x[2]*x[3]+x[3]^2)*x[1]^2-x[2]*x[3]*(x[2]+x[3])*x[1]+x[2]^2*x[3]^2)*(y[1]-y[2]), (2) = -(x[1]-x[3])*(x[2]-x[3])*(x[1]-x[2])*((y[2]^2-y[2]*y[3]+y[3]^2)*y[1]^2-y[2]*y[3]*(y[2]+y[3])*y[1]+y[2]^2*y[3]^2), (3) = ((-y[1]^2*y[2]+(3*y[2]*y[3]-y[3]^2)*y[1]-y[2]^2*y[3])*x[2]+x[3]*(y[1]^2*y[3]+y[2]*(y[2]-3*y[3])*y[1]+y[2]*y[3]^2))*x[1]^2+((y[1]^2*y[3]+y[2]*(y[2]-3*y[3])*y[1]+y[2]*y[3]^2)*x[2]^2+3*x[3]*(y[2]-y[3])*(y[1]-y[3])*(y[1]-y[2])*x[2]-x[3]^2*(y[1]^2*y[2]+(-3*y[2]*y[3]+y[3]^2)*y[1]+y[2]^2*y[3]))*x[1]-x[3]*((y[1]^2*y[2]+(-3*y[2]*y[3]+y[3]^2)*y[1]+y[2]^2*y[3])*x[2]-x[3]*(y[1]^2*y[3]+y[2]*(y[2]-3*y[3])*y[1]+y[2]*y[3]^2))*x[2]})

eqns := {(x[1]-x[2])*(x[2]-x[3])*(x[3]-x[1]) = R, (y[1]-y[2])*(y[2]-y[3])*(y[3]-y[1]) = S, x[1]^2*x[2]^2-x[1]^2*x[2]*x[3]+x[1]^2*x[3]^2-x[1]*x[2]^2*x[3]-x[1]*x[2]*x[3]^2+x[2]^2*x[3]^2 = Y, y[1]^2*y[2]^2-y[1]^2*y[2]*y[3]+y[1]^2*y[3]^2-y[1]*y[2]^2*y[3]-y[1]*y[2]*y[3]^2+y[2]^2*y[3]^2 = X, x[1]^2*x[2]+x[1]^2*x[3]+x[1]*x[2]^2-6*x[1]*x[2]*x[3]+x[1]*x[3]^2+x[2]^2*x[3]+x[2]*x[3]^2 = Z, y[1]^2*y[2]+y[1]^2*y[3]+y[1]*y[2]^2-6*y[1]*y[2]*y[3]+y[1]*y[3]^2+y[2]^2*y[3]+y[2]*y[3]^2 = W}

P1new := simplify(P1, eqns)

Vector[column](%id = 36893490132854572084)

 (1)

values := {x[1] = 3, x[2] = 5, x[3] = 7, y[1] = 2, y[2] = -11, y[3] = 13}

{x[1] = 3, x[2] = 5, x[3] = 7, y[1] = 2, y[2] = -11, y[3] = 13}

 (2)

vals1 := eval(eqns, values)

{-3432 = S, 16 = R, 120 = Z, 316 = Y, 2018 = W, 22753 = X}

 (3)

eval(P1new, vals1)

Vector[column](%id = 36893490132854572084)

 (4)

vals1swap := [seq(rhs(vals1[i]) = lhs(vals1[i]), i = 1 .. nops(vals1))]

[S = -3432, R = 16, Z = 120, Y = 316, W = 2018, X = 22753]

 (5)

eval(P1new, vals1swap)

Vector[column](%id = 36893490132849052116)

 (6)

eval(P1, values)

Vector[column](%id = 36893490132871267020)

 (7)

``

NULL

``

Download Q_6-03-2022_side_rels_and_eval.mw

How do I to find where .mla files are ...

Ronan 1207 Maple 2021
library librarytools
February 05 2022
1 4

 I have two personal packages I wrote for Maple a few years age. I use them regurlary. They are stored in two differant locations.  Is there of interogerating Maple to find out where they are and some details obout them? What I load is

with(RationalTrigonometry) and with(RonanRoutines)

I finally found them again.

One in C\usersIRonan\Maple\persona\lib\RatTrig.mla

Other in (basically in) My documents\Maple\.A library\RonanRoutines1.mla

So the package load name and the .mla file name are different. I would like to know where the packages are being loaded from and under what name they are saved as.

 

Is it possible to restrict the number of...

Ronan 1207 Maple 2021
windows linearalgebra symbolic
January 31 2022
2 1

I am trying to compute the determinant of a 3 x 3 matrix. It has very involved symbolic entries.

The cpu goes to 100% and after about a minute I get BSOD on windows 10. Using a 4 core i7 64 gig of ram.

Can I stop Maple using all the cores to see if this helps the BSOD.?

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