Advanced Programming Guide

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6.5 <strong>Programming</strong> with the plottools Package • 251Exercise1. Make a Smith Chart by building appropriate circular arcs above theaxes.2. Create a copy reflected on the axis (using the transform procedure).3. Add a final horizontal line. The parameter r denotes the radius of thelargest circle.4. Modify the smithChart procedure to add text to mark appropriategrid markers.Modifying Polygon MeshesYou can construct a new plot tool that works like those in the plottoolspackage.Example 1 In this example, you can cut or modify polygon structures byworking with individual faces, and then mapping the results onto entirepolygons. Thus, you can have a procedure that removes the inside of asingle face of a polygon.> cutoutPolygon := proc( vlist_in::{list, hfarray},> scale::numeric )> local vlist, i, center, outside, inside, n, edges, polys;>> vlist := ‘if‘(vlist_in::hfarray, op(3, eval(vlist_in)),> vlist_in);> n := nops(vlist);> center := add( i, i=vlist ) / n;> inside := seq( scale*(vlist[i]-center) + center,> i=1..n);> outside := seq( [ inside[i], vlist[i],> vlist[i+1], inside[i+1] ],> i=1..n-1 ):> polys := POLYGONS( outside,
252 • Chapter 6: <strong>Programming</strong> with Maple Graphics> [ inside[n], vlist[n],> vlist[1], inside[1] ],> STYLE(PATCHNOGRID) );> edges := CURVES( [ op(vlist), vlist[1] ],> [ inside, inside[1] ] );> polys, edges;> end proc:Note that the cutoutPolygon procedure handles input in either listor hfarray form.The following are the corners of a triangle.> triangle := [ [0,2], [2,2], [1,0] ];triangle := [[0, 2], [2, 2], [1, 0]]The cutoutPolygon procedure converts triangle to three polygons(one for each side) and two curves.> cutoutPolygon( triangle, 1/2 );POLYGONS([[ 1 2 , 5 3 ], [0, 2], [2, 2], [3 2 , 5 3 ]],[[ 3 2 , 5 3 ], [2, 2], [1, 0], [1, 2 3 ]], [[1, 2 3 ], [1, 0], [0, 2], [1 2 , 5 3 ]],STYLE(PATCHNOGRID)), CURVES([[0, 2], [2, 2], [1, 0], [0, 2]], [[ 1 2 , 5 3 ], [3 2 , 5 3 ], [1, 2 3 ], [1 2 , 5 3 ]])Use the display command from the plots package to show the triangle.> plots[display]( %, color=red );21.510.500.5 1 1.5 2
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ii•Waterloo Maple Inc.57 Erb Stre
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Contents • v3.6 Interfaces and Im
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Contents • viiPlotting Gears . .
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Contents • ixForeign Data . . . .
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1 Introduction1.1 Purpose of This B
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2 Procedures, Variables,and Extendi
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2.1 Nested Procedures • 5procedur
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2.1 Nested Procedures • 7> A[j] :
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2.1 Nested Procedures • 9> quicks
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2.1 Nested Procedures • 11> U :=
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2.2 Procedures That Return Procedur
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2.2 Procedures That Return Procedur
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2.3 Local Variables and Invoking Pr
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assign(another_a = a);> eqn;2.3 Loc
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[ seq( s[j][c[j]], j=1..2 ) ];2.3 L
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2.3 Local Variables and Invoking Pr
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2.4 Interactive Input • 25Improve
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2.4 Interactive Input • 27> reads
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2.5 Extending Maple • 29The parse
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2.5 Extending Maple • 31> ‘type
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2.5 Extending Maple • 33The follo
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2.5 Extending Maple • 3556 IIn th
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2.5 Extending Maple • 37Extending
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2.5 Extending Maple • 39The useri
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3 Programming withModulesProcedures
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• 43> gentemp := proc()> count :=
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3.1 Syntax and Semantics3.1 Syntax
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3.1 Syntax and Semantics • 47name
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3.1 Syntax and Semantics • 49> He
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3.1 Syntax and Semantics • 51mode
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3.1 Syntax and Semantics • 53The
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3.1 Syntax and Semantics • 55true
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3.1 Syntax and Semantics • 57modu
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3.1 Syntax and Semantics • 59> m
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This is achieved by the double assi
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3.1 Syntax and Semantics • 63This
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3.1 Syntax and Semantics • 65With
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3.1 Syntax and Semantics • 67> wh
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SpecFuncs := module()> export F; #
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3.2 Records • 71b> evalb( % = b )
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3.3 Packages • 73Packages in the
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3.3 Packages • 751 −1 + 1 21k x
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3.3 Packages • 77> "new types ‘
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3.3 Packages • 79definition. This
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3.3 Packages • 81true> member( 10
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3.3 Packages • 83The display show
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3.3 Packages • 85> end module:How
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3.3 Packages • 87From the output
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3.3 Packages • 89The final output
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3.3 Packages • 91shape-specific f
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3.3 Packages • 93The area Procedu
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"but got %1", shape> end if;>> # Ex
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3.4 The use Statement • 97> circl
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3.4 The use Statement • 99use sta
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3.4 The use Statement • 101C++),
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3.5 Modeling Objects3.5 Modeling Ob
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3.5 Modeling Objects • 10514 πFo
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3.5 Modeling Objects • 107> nitem
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3.5 Modeling Objects • 109> for i
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3.5 Modeling Objects • 111> lengt
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3.6 Interfaces and Implementations
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(−2790 T 6 − 77814+ 1943715124T
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4 Input and OutputAlthough Maple is
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4.1 A Tutorial Example • 157Openi
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4.1 A Tutorial Example • 159xy :=
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Buffered Files:4.2 File Types and M
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4.3 File Descriptors versus File Na
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f := fopen("testFile.txt",WRITE):>
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4.5 Input Commands • 167iostatus(
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4.5 Input Commands • 169otherwise
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4.5 Input Commands • 171y The nex
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4.5 Input Commands • 173various c
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4.5 Input Commands • 175Example T
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4.6 Output Commands • 177One-Dime
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4.6 Output Commands • 179the appr
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4.6 Output Commands • 181Writing
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4.6 Output Commands • 183z format
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4.6 Output Commands • 185• If n
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4.6 Output Commands • 187> writed
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4.7 Conversion Commands • 189Conv
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4.8 Notes to C Programmers • 191(
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5 Numerical Programmingin MapleFloa
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5.1 The Basics of evalf • 1953.14
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5.2 Hardware Floating-Point Numbers
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5.2 Hardware Floating-Point Numbers
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Page 220 and 221: 5.4 Extending the evalf Command •
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Page 224 and 225: 5.5 Using the Matlab Package • 21
Page 226 and 227: 6 Programming with MapleGraphicsMap
Page 228 and 229: 6.1 Basic Plot Functions • 217If
Page 230 and 231: 6.2 Programming with Plotting Libra
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Page 268 and 269: 6.6 Vector Field Plots • 257Examp
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Page 300 and 301: 7 Advanced ConnectivityIn This Chap
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7.2 Using Compiled Code in Maple
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char * concat( char* a, char *b ){c
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myAdd = to_maple_integer( kv, r )EN
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7.3 System Integrity • 337by anot
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Table 7.3 Wrapper Compound TypesMap
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AInternal Representationand Manipul
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A.1 Internal Organization • 343wi
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A.2 Internal Representations of Dat
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Type Specification or TestA.2 Inter
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Length: 3 or moreA.2 Internal Repre
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A.3 The Use of Hashing in Maple •
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Index%, 174&, 31accuracy, 193, 195,
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Index • 375SAVE, 362SERIES, 363SE
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Index • 377defining numeric, 210n
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Index • 379name, 357name table, 3
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Index • 381statements, 174strings
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Waterloo Maple Inc.57 Erb Street We
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