## DISLIN Beispiele / C#

#### Demonstration of CURVE / C#

using System;

public class App {
public static void Main() {
int n = 301;
float [] xray = new float [n];
float [] y1ray = new float [n];
float [] y2ray = new float [n];
int i, ic;
float x, step, fpi;

fpi = 3.1415926f / 180;
step = 360.0f / (n - 1);
for (i = 0; i < n; i++)
{ xray[i] = i * step;
x = xray[i] * fpi;
y1ray[i] = (float) Math.Sin (x);
y2ray[i] = (float) Math.Cos (x);
}

dislin.scrmod ("revers");
dislin.metafl ("xwin");
dislin.disini ();
dislin.pagera ();
dislin.complx ();

dislin.axspos (450, 1800);
dislin.axslen (2200, 1200);

dislin.name ("X-axis", "X");
dislin.name ("Y-axis", "Y");
dislin.labdig (-1, "X");
dislin.ticks (10, "Y");
dislin.ticks (9, "X");

dislin.titlin ("Demonstration of CURVE", 1);
dislin.titlin ("SIN(X), COS(X)", 3);

ic = dislin.intrgb (0.95f, 0.95f, 0.95f);
dislin.axsbgd (ic);

dislin.graf (0.0f, 360.0f, 0.0f, 90.0f, -1.0f, 1.0f, -1.0f, 0.5f);
dislin.setrgb (0.7f, 0.7f, 0.7f);
dislin.grid (1, 1);

dislin.color ("fore");
dislin.height (50);
dislin.title ();

dislin.color ("red");
dislin.curve (xray, y1ray, n);
dislin.color ("green");
dislin.curve (xray, y2ray, n);
dislin.disfin ();
}
}



#### Polar Plots / C#

using System;

public class App {
public static void Main() {
int i, n = 300, m = 10, ic;
float f = 3.1415927f / 180, step, a;
float [] x1 = new float [n];
float [] y1 = new float [n];
float [] x2 = new float [m];
float [] y2 = new float [m];

step = 360.0f / (n - 1);
for (i = 0; i < n; i++)
{ a = (i * step) * f;
y1[i] = a;
x1[i] = (float) Math.Sin (5 * a);
}

for (i = 0; i < m; i++)
{ x2[i] = i + 1;
y2[i] = i + 1;
}

dislin.scrmod ("revers");
dislin.metafl ("cons");
dislin.setpag ("da4p");
dislin.disini ();
dislin.pagera ();
dislin.hwfont ();

dislin.titlin ("Polar Plots", 2);
dislin.ticks (3, "y");

dislin.axends ("NOENDS", "X");
dislin.labdig (-1, "Y");
dislin.axslen (1000, 1000);
dislin.axsorg (1050, 900);

ic = dislin.intrgb (0.95f, 0.95f, 0.95f);
dislin.axsbgd (ic);
dislin.grafp  (1.0f,0.0f, 0.2f, 0.0f, 30.0f);
dislin.color ("blue");
dislin.curve  (x1, y1, n);
dislin.color ("fore");
dislin.htitle (50);
dislin.title  ();
dislin.endgrf ();

dislin.labdig (-1, "X");
dislin.axsorg (1050, 2250);
dislin.labtyp ("VERT", "Y");
dislin.grafp  (10.0f, 0.0f, 2.0f, 0.0f, 30.0f);
dislin.barwth (-5.0f);
dislin.polcrv ("FBARS");
dislin.color ("blue");
dislin.curve  (x2, y2, m);
dislin.disfin ();
}
}


#### Symbols / C#

u
sing System;
using System.Text;

public class App {
public static void Main() {
int nl, ny, i, nxp = 0;
StringBuilder cstr = new StringBuilder (80);
string ctit = "Symbols";

dislin.scrmod ("revers");
dislin.setpag ("da4p");
dislin.metafl ("cons");
dislin.disini ();
dislin.pagera ();
dislin.complx ();

dislin.height (60);
nl = dislin.nlmess (ctit);
dislin.messag (ctit, (2100 - nl) / 2, 200);

dislin.height (50);
dislin.hsymbl (120);

ny = 150;
for (i = 0; i < 24; i++)
{ if ((i % 4) == 0)
{ ny  += 400;
nxp  = 550;
}
else
{ nxp += 350;
}

nl = dislin.intcha (i, cstr);
nl = dislin.nlmess (cstr.ToString ()) / 2;
dislin.messag (cstr.ToString (), nxp - nl, ny + 150);
dislin.symbol (i, nxp, ny);
}
dislin.disfin ();
}
}


#### Interpolation Methods / C#

using System;
using System.Text;

public class App {
public static void Main() {
int nya = 2700, i, nx, ny, ic;
float [] x = {0.0f, 1.0f, 3.0f, 4.5f, 6.0f, 8.0f, 9.0f, 11.0f, 12.0f,
12.5f, 13.0f, 15.0f, 16.0f, 17.0f, 19.0f, 20.0f};
float [] y = {2.0f, 4.0f, 4.5f, 3.0f, 1.0f, 7.0f, 2.0f, 3.0f, 5.0f,
2.0f, 2.5f, 2.0f, 4.0f, 6.0f, 5.5f, 4.0f};
string [] cpol = {"SPLINE", "STEM", "BARS", "STAIRS", "STEP", "LINEAR"};
string ctit = "Interpolation Methods";

dislin.setpag ("da4p");
dislin.metafl ("cons");
dislin.scrmod ("revers");
dislin.disini ();
dislin.complx ();
dislin.pagera ();
dislin.incmrk (1);
dislin.hsymbl (25);
dislin.titlin (ctit, 2);
dislin.axslen (1500, 350);
dislin.setgrf ("line", "line", "line", "line");
ic = dislin.intrgb (1.0f, 1.0f, 0.0f);
dislin.axsbgd (ic);

for (i = 0; i < 6; i++)
{ dislin.axspos (350, nya - i * 350);
dislin.polcrv (cpol[i]);
dislin.marker (16);

dislin.graf   (0.0f, 20.0f, 0.0f, 5.0f, 0.0f, 10.0f, 0.0f, 5.0f);
nx = dislin.nxposn (1.0f);
ny = dislin.nyposn (8.0f);
dislin.messag (cpol[i], nx, ny);
dislin.color  ("red");
dislin.curve  (x, y, 16);
dislin.color  ("fore");

if (i == 5)
{ dislin.height (50);
dislin.title  ();
}
dislin.endgrf ();
}
dislin.disfin ();
}
}


#### Bar Graphs / C#

using System;
using System.Text;

public class App {
public static void Main() {
int nya = 2700, i;
string ctit = "Bar Graphs (BARS)";
StringBuilder cbuf = new StringBuilder (25);

float [] x  = {1.0f, 2.0f, 3.0f, 4.0f, 5.0f, 6.0f, 7.0f, 8.0f, 9.0f};
float [] y  = {0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f};
float [] y1 = {1.0f, 1.5f, 2.5f, 1.3f, 2.0f, 1.2f, 0.7f, 1.4f, 1.1f};
float [] y2 = {2.0f, 2.7f, 3.5f, 2.1f, 3.2f, 1.9f, 2.0f, 2.3f, 1.8f};
float [] y3 = {4.0f, 3.5f, 4.5f, 3.7f, 4.0f, 2.9f, 3.0f, 3.2f, 2.6f};

dislin.scrmod ("revers");
dislin.setpag ("da4p");
dislin.metafl ("cons");
dislin.disini ();
dislin.pagera ();
dislin.complx ();
dislin.ticks  (1, "x");
dislin.intax  ();;
dislin.axslen (1600, 700);
dislin.titlin (ctit, 3);

dislin.legini (cbuf, 3, 8);
dislin.leglin (cbuf, "FIRST", 1);
dislin.leglin (cbuf, "SECOND", 2);
dislin.leglin (cbuf, "THIRD", 3);
dislin.legtit (" ");
dislin.shdpat (5);
for (i = 1; i <= 3; i++)
{ if (i > 1) dislin.labels ("none", "x");
dislin.axspos (300, nya - (i - 1) * 800);
dislin.graf   (0.0f, 10.0f, 0.0f, 1.0f, 0.0f, 5.0f, 0.0f, 1.0f);

if (i == 1)
{ dislin.bargrp (3, 0.15f);
dislin.color  ("red");
dislin.bars   (x, y, y1, 9);
dislin.color  ("green");
dislin.bars   (x, y, y2, 9);
dislin.color  ("blue");
dislin.bars   (x, y, y3, 9);
dislin.color  ("fore");
dislin.reset  ("bargrp");
}
else if (i == 2)
{ dislin.height (30);
dislin.labels ("delta", "bars");
dislin.labpos ("center", "bars");
dislin.color  ("red");
dislin.bars   (x, y, y1, 9);
dislin.color  ("green");
dislin.bars   (x, y1, y2, 9);
dislin.color  ("blue");
dislin.bars   (x, y2, y3, 9);
dislin.color  ("fore");
dislin.reset  ("height");
}
else if (i == 3)
{ dislin.labels ("second", "bars");
dislin.labpos ("outside", "bars");
dislin.color  ("red");
dislin.bars   (x, y, y1, 9);
dislin.color  ("fore");
}

if (i != 3) dislin.legend (cbuf, 7);

if (i == 3)
{ dislin.height (50);
dislin.title  ();
}

dislin.endgrf ();
}
dislin.disfin ();
}
}



#### Pie Charts / C#

using System;
using System.Text;

public class App {
public static void Main() {
float [] xray = {1.0f, 2.5f, 2.0f, 2.7f, 1.8f};
StringBuilder cbuf = new StringBuilder (80);

dislin.scrmod ("revers");
dislin.metafl ("cons");
dislin.setpag ("da4p");
dislin.disini ();
dislin.pagera ();
dislin.hwfont ();
dislin.chnpie ("BOTH");

dislin.axslen (1600, 1000);
dislin.titlin ("Pie Charts (PIEGRF)", 1);

dislin.legini (cbuf, 5, 8);
dislin.leglin (cbuf, "FIRST",  1);
dislin.leglin (cbuf, "SECOND", 2);
dislin.leglin (cbuf, "THIRD",  3);
dislin.leglin (cbuf, "FOURTH", 4);
dislin.leglin (cbuf, "FIFTH",  5);

dislin.patcyc (1, 7);
dislin.patcyc (2, 4);
dislin.patcyc (3, 13);
dislin.patcyc (4, 3);
dislin.patcyc (5, 5);

dislin.axspos (250, 2800);
dislin.piegrf (cbuf.ToString (), 1, xray, 5);
dislin.endgrf ();

dislin.axspos (250, 1600);
dislin.labels ("DATA", "PIE");
dislin.labpos ("EXTERNAL", "PIE");
dislin.piegrf (cbuf.ToString (), 1, xray, 5);

dislin.height (50);
dislin.title  ();
dislin.disfin ();
}
}


#### 3-D Bar Graph / 3-D Pie Chart / C#

using System;
using System.Text;

public class App {
public static void Main() {
StringBuilder cbuf = new StringBuilder (80);
float [] xray  = {2.0f, 4.0f, 6.0f, 8.0f, 10.0f};
float [] y1ray = {0.0f, 0.0f, 0.0f, 0.0f, 0.0f};
float [] y2ray = {3.2f, 1.5f, 2.0f, 1.0f, 3.0f};
int [] ic1ray  = {50, 150, 100, 200, 175};
int [] ic2ray  = {50, 150, 100, 200, 175};

dislin.scrmod ("revers");
dislin.setpag ("da4p");
dislin.metafl ("cons");
dislin.disini ();
dislin.pagera ();
dislin.hwfont ();

dislin.titlin ("3-D Bar Graph / 3-D Pie Chart", 2);
dislin.htitle (40);

dislin.shdpat (16);
dislin.axslen (1500, 1000);
dislin.axspos (300, 1400);

dislin.barwth (0.5f);
dislin.bartyp ("3dvert");
dislin.labels ("second", "bars");
dislin.labpos ("outside", "bars");
dislin.labclr (255, "bars");
dislin.graf   (0.0f, 12.0f, 0.0f, 2.0f, 0.0f, 5.0f, 0.0f, 1.0f);
dislin.title  ();
dislin.color  ("red");
dislin.bars   (xray, y1ray, y2ray, 5);
dislin.endgrf ();

dislin.shdpat (16);
dislin.labels ("data", "pie");
dislin.labclr (255, "pie");
dislin.chnpie ("none");
dislin.pieclr (ic1ray, ic2ray, 5);
dislin.pietyp ("3d");
dislin.axspos (300, 2700);
dislin.piegrf (cbuf.ToString (), 0, y2ray, 5);
dislin.disfin ();
}
}


#### 3-D Bars / BARS3D / C#

using System;
using System.Text;

public class App {
public static void Main() {
int n = 18, i;
StringBuilder cbuf = new StringBuilder (80);
float [] xwray = new float [n];
float [] ywray = new float [n];
float [] xray  = {1.0f, 3.0f, 8.0f, 1.5f, 9.0f, 6.3f, 5.8f, 2.3f, 8.1f,
3.5f, 2.2f, 8.7f, 9.2f, 4.8f, 3.4f, 6.9f, 7.5f, 3.8f};
float [] yray  = {5.0f, 8.0f, 3.5f, 2.0f, 7.0f, 1.0f, 4.3f, 7.2f, 6.0f,
8.5f, 4.1f, 5.0f, 7.3f, 2.8f, 1.6f, 8.9f, 9.5f, 3.2f};
float [] z1ray = {0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f,
0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f};
float [] z2ray = {4.0f, 5.0f, 3.0f, 2.0f, 3.5f, 4.5f, 2.0f, 1.6f, 3.8f,
4.7f, 2.1f, 3.5f, 1.9f, 4.2f, 4.9f, 2.8f, 3.6f, 4.3f};
int [] icray   = {30, 30, 30, 30, 30, 30, 100, 100, 100, 100,
100, 100, 170, 170, 170, 170, 170, 170};

for (i = 0; i < n; i++)
{ xwray[i] = (float) 0.5;
ywray[i] = (float) 0.5;
}

dislin.scrmod ("revers");
dislin.setpag ("da4p");
dislin.metafl ("cons");
dislin.disini ();
dislin.pagera ();
dislin.hwfont ();
dislin.axspos (200, 2600);
dislin.axslen (1800, 1800);

dislin.name   ("X-axis", "x");
dislin.name   ("Y-axis", "y");
dislin.name   ("Z-axis", "z");

dislin.titlin ("3-D Bars / BARS3D", 3);
dislin.labl3d ("hori");

dislin.graf3d (0.0f, 10.0f, 0.0f, 2.0f, 0.0f, 10.0f, 0.0f, 2.0f,
0.0f, 5.0f, 0.0f, 1.0f);
dislin.grid3d (1, 1, "bottom");
dislin.bars3d (xray, yray, z1ray, z2ray, xwray, ywray, icray, n);

dislin.legini (cbuf, 3, 20);
dislin.legtit (" ");
dislin.legpos (1350, 1150);
dislin.leglin (cbuf, "First", 1);
dislin.leglin (cbuf, "Second", 2);
dislin.leglin (cbuf, "Third", 3);
dislin.legend (cbuf, 3);

dislin.height (50);
dislin.title  ();
dislin.disfin ();
}
}


using System;
using System.Text;

public class App {
public static void Main() {
int [] ixp = new int [4];
int [] iyp = new int [4];
int [] ix = {0, 300, 300, 0};
int [] iy = {0, 0, 400, 400};
int   nl, nx, nx0 = 335, ny0 = 350, ny, i, j, ii, k, iclr;
StringBuilder cstr = new StringBuilder (80);
string ctit = "Shading Patterns (AREAF)";

dislin.scrmod ("revers");
dislin.metafl ("cons");
dislin.disini ();
dislin.pagera ();
dislin.complx ();
dislin.setvlt ("small");

dislin.height (50);
nl = dislin.nlmess (ctit);
nx = (2970 - nl) / 2;
dislin.messag (ctit, nx, 200);

iclr = 0;
for (i = 0; i < 3; i++)
{ ny = ny0 +i * 600;
for (j = 0; j < 6; j++)
{ nx = nx0 + j * 400;
ii = i * 6 + j;
nl = dislin.intcha (ii, cstr);
dislin.shdpat (ii);

iclr = iclr % 16;
iclr++;
dislin.setclr (iclr);

for (k = 0; k < 4; k++)
{ ixp[k] = ix[k] + nx;
iyp[k] = iy[k] + ny;
}
dislin.areaf  (ixp, iyp, 4);

nl  = dislin.nlmess (cstr.ToString ());
nx += (300 - nl) / 2;
dislin.messag (cstr.ToString (), nx, ny + 460);
}
}
dislin.disfin ();
}
}


#### 3-D Colour Plot / C#

using System;

public class App {
public static void Main() {
int n = 100;
float [,] zmat = new float [n,n];
int i, j;
float x, y, step, fpi;

fpi = 3.1415926f / 180;
step = 360.0f / (n - 1);
for (i = 0; i < n; i++)
{ x = i * step;
for (j = 0; j < n; j++)
{ y = j * step;
zmat[i,j] = (float) (2 * Math.Sin (x * fpi) * Math.Sin (y * fpi));
}
}

dislin.scrmod ("revers");
dislin.metafl ("xwin");
dislin.disini ();
dislin.pagera ();
dislin.hwfont ();

dislin.titlin ("3-D Colour Plot of the Function", 1);
dislin.titlin ("F(X,Y) = 2 * SIN(X) * SIN(Y)", 3);
dislin.name   ("X-axis", "X");
dislin.name   ("Y-axis", "Y");
dislin.name   ("Z-axis", "Z");

dislin.axspos (300, 1850);
dislin.ax3len (2200, 1400, 1400);

dislin.intax  ();
dislin.autres (n, n);
dislin.graf3 (0.0f, 360.0f, 0.0f, 90.0f, 0.0f, 360.0f, 0.0f, 90.0f,
-2.0f, 2.0f, -2.0f, 1.0f);
dislin.crvmat (zmat, n, n, 1, 1);

dislin.height (50);
dislin.title ();
dislin.disfin ();
}
}


#### Surface Plot / C#

using System;

public class App {
public static void Main() {
int n = 50, m = 50;
float [,] zmat = new float [n,m];
int i, j;
float x, y, step, fpi;

fpi = 3.1415926f / 180;
step = 360.0f / (n - 1);
for (i = 0; i < n; i++)
{ x = i * step;
for (j = 0; j < m; j++)
{ y = j * step;
zmat[i,j] = (float) (2 * Math.Sin (x * fpi) * Math.Sin (y * fpi));
}
}

dislin.scrmod ("revers");
dislin.metafl ("cons");
dislin.setpag ("da4p");
dislin.disini ();
dislin.pagera ();
dislin.hwfont ();

dislin.titlin ("Surface Plot of the Function", 2);
dislin.titlin ("F(X,Y) = 2 * SIN(X) * SIN (Y)", 4);

dislin.axspos (200, 2600);
dislin.axslen (1800, 1800);

dislin.name   ("X-axis", "X");
dislin.name   ("Y-axis", "Y");
dislin.name   ("Z-axis", "Z");

dislin.view3d (-5.0f, -5.0f, 4.0f, "ABS");
dislin.graf3d (0.0f, 360.0f, 0.0f, 90.0f, 0.0f, 360.0f, 0.0f, 90.0f,
-3.0f, 3.0f, -3.0f, 1.0f);
dislin.height (50);
dislin.title  ();

dislin.color  ("green");
dislin.surmat (zmat, n, m, 1, 1);
dislin.disfin ();
}
}


#### Shaded Surface Plot / C#

using System;

public class App {
public static void Main() {
int n = 50, m = 50;
float [,] zmat = new float [n,m];
float [] xray = new float [n];
float [] yray = new float [m];
int i, j;
float x, y, step, fpi;

fpi = 3.1415926f / 180;
step = 360.0f / (n - 1);
for (i = 0; i < n; i++)
{ x = i * step;
xray[i] = x;
for (j = 0; j < m; j++)
{ y = j * step;
yray[j] = y;
zmat[i,j] = (float) (2 * Math.Sin (x * fpi) * Math.Sin (y * fpi));
}
}

dislin.scrmod ("revers");
dislin.metafl ("cons");
dislin.setpag ("da4p");
dislin.disini ();
dislin.pagera ();
dislin.hwfont ();

dislin.titlin ("F(X,Y) = 2 * SIN(X) * SIN (Y)", 4);

dislin.axspos (200, 2600);
dislin.axslen (1800, 1800);

dislin.name   ("X-axis", "X");
dislin.name   ("Y-axis", "Y");
dislin.name   ("Z-axis", "Z");

dislin.view3d (-5.0f, -5.0f, 4.0f, "ABS");
dislin.graf3d (0.0f, 360.0f, 0.0f, 90.0f, 0.0f, 360.0f, 0.0f, 90.0f,
-3.0f, 3.0f, -3.0f, 1.0f);
dislin.height (50);
dislin.title  ();

dislin.shdmod ("smooth", "surface");
dislin.surshd (xray, n, yray, m, zmat);
dislin.disfin ();
}
}


#### Contour Plot / C#

using System;

public class App {
public static void Main() {
int n = 50, m = 50;
float [,] zmat = new float [n,m];
float [] xray = new float [n];
float [] yray = new float [m];
int i, j;
float x, y, stepx, stepy, fpi, zlev;

stepx = 360.0f / (n - 1);
stepy = 360.0f / (m - 1);
fpi = 3.1415926f / 180;

for (i = 0; i < n; i++)
{ xray[i] = stepx * i;
}

for (j = 0; j < m; j++)
{ yray[j] = stepy * j;
}

for (i = 0; i < n; i++)
{ x = xray[i] * fpi;
for (j = 0; j < m; j++)
{ y = yray[j] * fpi;
zmat[i,j] = (float) (2 * Math.Sin (x) * Math.Sin (y));
}
}

dislin.scrmod ("revers");
dislin.metafl ("cons");
dislin.setpag ("da4p");
dislin.disini ();
dislin.pagera ();
dislin.complx ();

dislin.titlin ("Contour Plot", 1);
dislin.titlin ("F(X,Y) = 2 * SIN(X) * SIN(Y)", 3);

dislin.intax ();
dislin.axspos (450, 2650);

dislin.name ("X-axis", "X");
dislin.name ("Y-axis", "Y");

dislin.graf (0.0f, 360.0f, 0.0f, 90.0f, 0.0f, 360.0f, 0.0f, 90.0f);
dislin.height (50);
dislin.title ();

dislin.height (30);
for (i = 0; i < 9; i++)
{ zlev = -2.0f + i * 0.5f;
if (i == 4)
dislin.labels ("NONE", "CONTUR");
else
dislin.labels ("FLOAT", "CONTUR");

dislin.setclr ((i+1) * 28);
dislin.contur (xray, n, yray, m, zmat, zlev);
}
dislin.disfin ();
}
}


#### Shaded Contour Plot / C#

using System;

public class App {
public static void Main() {
int n = 50, m = 50, i, j;
float [,] zmat = new float [n,m];
float [] xray = new float [n];
float [] yray = new float [m];
float [] zlev = new float [12];

string ctit1 = "Shaded Contour Plot";
string ctit2 = "F(X,Y) = (X[2$- 1)[2$ + (Y[2$- 1)[2$";

double x, y;
double stepx = 1.6 / (n-1);
double stepy = 1.6 / (m-1);

for (i = 0; i < n; i++)
{ xray[i] = (float) (stepx * i);
}

for (j = 0; j < m; j++)
{ yray[j] = (float) (stepy * j);
}

for (j = 0; j < m; j++) {
yray[j] = (float) (j * stepy);
}

for (i = 0; i < n; i++)
{ x = xray[i] * xray[i] - 1.0f;
x *= x;
for (j = 0; j < m; j++)
{ y = yray[j] * yray[j] - 1.0f;
zmat[i,j] = (float) (x + y * y);
}
}

dislin.scrmod ("revers");
dislin.metafl ("cons");
dislin.setpag ("da4p");
dislin.disini ();
dislin.pagera ();
dislin.complx ();
dislin.mixalf ();

dislin.titlin (ctit1, 1);
dislin.titlin (ctit2, 3);
dislin.name   ("X-axis", "x");
dislin.name   ("Y-axis", "y");
dislin.axspos (450, 2670);
dislin.shdmod ("poly", "contur");

dislin.graf   (0.0f, 1.6f, 0.0f, 0.2f,
0.0f, 1.6f, 0.0f, 0.2f);
for (i = 0; i < 12; i++) {
zlev[11-i] = 0.1f + i * 0.1f;
}

dislin.conshd (xray, n, yray, m, zmat, zlev, 12);

dislin.height (50);
dislin.title  ();
dislin.disfin ();
}
}


#### Shaded Surface / Contour Plot / C#

using System;

public class App {
public static void Main() {
int n = 50, m = 50, i, j, nlev = 20;
float [,] zmat = new float [n,m];
float [] xray = new float [n];
float [] yray = new float [m];
float [] zlev = new float [nlev];

double x, y, step;
double fpi = 3.1415926/180.0;
double stepx = 360.0 / (n-1);
double stepy = 360.0 / (m-1);
for (i = 0; i < n; i++) {
x = i * stepx;
xray[i] = (float) x;
for (j = 0; j < m; j++) {
y = j * stepy;
yray[j] = (float) y;
zmat[i,j] = (float) (2 * Math.Sin (x*fpi)* Math.Sin (y*fpi));
}
}

dislin.scrmod ("revers");
dislin.metafl ("cons");
dislin.setpag ("da4p");
dislin.disini ();
dislin.pagera ();
dislin.hwfont ();

dislin.axspos (200, 2600);
dislin.axslen (1800, 1800);

dislin.name   ("X-axis", "x");
dislin.name   ("Y-axis",  "y");
dislin.name   ("Z-axis",  "z");

dislin.titlin ("Shaded Surface / Contour Plot", 1);
dislin.titlin ("F(X,Y) = 2*SIN(X)*SIN(Y)", 3);

dislin.graf3d (0.0f, 360.0f, 0.0f, 90.0f,
0.0f, 360.0f, 0.0f, 90.0f,
-2.0f, 2.0f, -2.0f, 1.0f);
dislin.height (50);
dislin.title  ();

dislin.grfini (-1.0f, -1.0f, -1.0f, 1.0f, -1.0f, -1.0f,
1.0f, 1.0f, -1.0f);
dislin.nograf ();
dislin.graf (0.0f, 360.0f, 0.0f, 90.0f, 0.0f, 360.0f, 0.0f, 90.0f);
step = 4.0 / nlev;
for (i = 0; i < nlev; i++)
zlev[i] = (float) (-2.0 + i * step);

dislin.conshd (xray, n, yray, n, zmat, zlev, nlev);
dislin.box2d ();
dislin.reset ("nograf");
dislin.grffin ();

dislin.shdmod  ("smooth", "surface");
dislin.surshd (xray, n, yray, m, zmat);
dislin.disfin ();
}
}


#### Spheres and Tubes / C#

using System;

public class App {
public static void Main() {
int i, j1, j2, iret;
float [] x = {10.0f, 20.0f, 10.0f, 20.0f, 5.0f, 15.0f, 25.0f, 5.0f, 15.0f,
25.0f, 5.0f, 15.0f, 25.0f, 10.0f, 20.0f, 10.0f, 20.0f};
float [] y = {10.0f, 10.0f, 20.0f, 20.0f, 5.0f, 5.0f, 5.0f, 15.0f, 15.0f,
15.0f, 25.0f, 25.0f, 25.0f, 10.0f, 10.0f, 20.0f, 20.0f};
float [] z = {5.0f, 5.0f, 5.0f, 5.0f, 15.0f, 15.0f, 15.0f, 15.0f, 15.0f,
15.0f, 15.0f, 15.0f, 15.0f, 25.0f, 25.0f, 25.0f, 25.0f};

int [] idx = {1, 2, 1, 3, 3, 4, 2, 4, 5, 6, 6, 7, 8, 9, 9, 10,
11, 12, 12, 13,  5, 8, 8, 11, 6, 9, 9, 12, 7, 10,
10, 13,  14, 15, 16, 17, 14, 16, 15, 17,
1, 5, 2, 7, 3, 11, 4, 13, 5, 14, 7, 15, 11, 16, 13, 17};

dislin.setpag ("da4p");
dislin.scrmod ("revers");
dislin.metafl ("cons");
dislin.disini ();
dislin.pagera ();
dislin.hwfont ();
dislin.light  ("on");
dislin.matop3 (0.02f, 0.02f, 0.02f, "specular");

dislin.clip3d ("none");
dislin.axspos (0, 2500);
dislin.axslen (2100, 2100);

dislin.htitle (50);
dislin.titlin ("Spheres and Tubes", 4);

dislin.name   ("X-axis", "x");
dislin.name   ("Y-axis", "y");
dislin.name   ("Z-axis", "z");

dislin.labdig (-1, "xyz");
dislin.labl3d ("hori");
dislin.graf3d (0.0f, 30.0f, 0.0f, 5.0f, 0.0f, 30.0f, 0.0f, 5.0f,
0.0f, 30.0f, 0.0f, 5.0f);
dislin.title ();

dislin.shdmod ("smooth", "surface");
iret = dislin.zbfini();
dislin.matop3 (1.0f, 0.0f, 0.0f, "diffuse");
for (i = 0; i < 17; i++)
dislin.sphe3d (x[i], y[i], z[i], 2.0f, 50, 25);

dislin.matop3 (0.0f, 1.0f, 0.0f, "diffuse");
for (i = 0; i < 56; i += 2)
{ j1 = idx[i] - 1;
j2 = idx[i+1] - 1;
dislin.tube3d (x[j1], y[j1], z[j1], x[j2], y[j2], z[j2], 0.5f, 5, 5);
}

dislin.zbffin ();
dislin.disfin ();
}
}


#### Some Solids / C#

using System;

public class App {
public static void Main() {
int iret;

dislin.setpag ("da4p");
dislin.scrmod ("revers");
dislin.metafl ("cons");
dislin.disini ();
dislin.pagera ();
dislin.hwfont ();
dislin.light  ("on");
dislin.litop3 (1,0.5f, 0.5f, 0.5f, "ambient");

dislin.clip3d ("none");
dislin.axspos (0, 2500);
dislin.axslen (2100, 2100);

dislin.htitle (60);
dislin.titlin ("Some Solids", 4);

dislin.nograf ();
dislin.graf3d (-5.0f, 5.0f, -5.0f, 2.0f, -5.0f, 5.0f, -5.0f, 2.0f,
-5.0f, 5.0f, -5.0f, 2.0f);
dislin.title ();

dislin.shdmod ("smooth", "surface");
iret = dislin.zbfini();

dislin.matop3 (1.0f, 0.5f, 0.0f, "diffuse");
dislin.tube3d (-3.0f, -3.0f, 8.0f, 2.0f, 3.0f, 5.5f, 1.0f, 40, 20);

dislin.rot3d  (-60.0f, 0.0f, 0.0f);
dislin.matop3 (1.0f, 0.0f, 1.0f, "diffuse");
dislin.setfce ("bottom");
dislin.matop3 (1.0f, 0.0f, 0.0f, "diffuse");
dislin.cone3d (-3.0f, -3.0f, 3.5f, 2.0f, 3.0f, 3.0f, 40, 20);
dislin.setfce ("top");

dislin.rot3d  (0.0f, 0.0f, 0.0f);
dislin.matop3 (0.0f, 1.0f, 1.0f, "diffuse");
dislin.plat3d (4.0f, 4.0f, 3.0f, 3.0f, "icos");

dislin.rot3d  (0.0f, 0.0f, 0.0f);
dislin.matop3 (1.0f, 1.0f, 0.0f, "diffuse");
dislin.sphe3d (0.0f, 0.0f, 0.0f, 3.0f, 40, 20);

dislin.rot3d  (0.0f, 0.0f, -20.0f);
dislin.matop3 (0.0f, 0.0f, 1.0f, "diffuse");
dislin.quad3d (-4.0f, -4.0f, -3.0f, 3.0f, 3.0f, 3.0f);

dislin.rot3d  (0.0f, 0.0f, 30.0f);
dislin.matop3 (1.0f, 0.3f, 0.3f, "diffuse");
dislin.pyra3d (-2.0f, -5.0f, -10.0f, 3.0f, 5.0f, 5.0f, 4);

dislin.rot3d  (0.0f, 0.0f, 0.0f);
dislin.matop3 (1.0f, 0.0f, 0.0f, "diffuse");
dislin.torus3d (7.0f, -3.0f, -2.0f, 1.5f, 3.5f, 1.5f,
0.0f, 360.0f, 40, 20);
dislin.rot3d  (0.0f, 90.0f, 0.0f);

dislin.matop3 (0.0f, 1.0f, 0.0f, "diffuse");
dislin.torus3d (7.0f, -5.0f, -2.0f, 1.5f, 3.5f, 1.5f, 0.0f,
360.0f, 40, 20);
dislin.zbffin ();
dislin.disfin ();
}
}


#### Map Plot / C#

using System;

public class App {
public static void Main() {

dislin.scrmod ("revers");
dislin.metafl ("cons");
dislin.disini ();
dislin.pagera ();
dislin.complx ();

dislin.axspos (400, 1850);
dislin.axslen (2400, 1400);

dislin.name   ("Longitude", "X");
dislin.name   ("Latitude",  "Y");
dislin.titlin ("World Coastlines and Lakes", 3);

dislin.labels ("MAP", "XY");
dislin.labdig (-1, "XY");
dislin.grafmp (-180.0f, 180.0f, -180.0f, 90.0f,
-90.0f, 90.0f, -90.0f, 30.0f);
dislin.gridmp (1,1);
dislin.color  ("green");
dislin.world ();

dislin.color  ("fore");
dislin.height (50);
dislin.title ();
dislin.disfin ();
}
}


#### TeX Instructions for Mathematical Formulas / C#

using System;

public class App {
public static void Main() {
int nl;
string cstr = "TeX Instructions for Mathematical Formulas";

dislin.scrmod ("revers");
dislin.setpag ("da4p");
dislin.metafl ("cons");
dislin.disini ();
dislin.pagera ();
dislin.complx ();
dislin.height (40);

nl = dislin.nlmess (cstr);
dislin.messag (cstr, (2100 - nl)/2, 100);

dislin.texmod ("on");
dislin.messag ("$\\frac{1}{x+y}$", 150, 400);
dislin.messag ("$\\frac{a^2 - b^2}{a+b} = a - b$", 1200, 400);

dislin.messag ("$r = \\sqrt{x^2 + y^2}", 150, 700); dislin.messag ("$\\cos \\phi = \\frac{x}{\\sqrt{x^2 + y^2}}$", 1200, 700); dislin.messag ("$\\Gamma(x) = \\int_0^\\infty e^{-t}t^{x-1}dt$", 150, 1000); dislin.messag ("$\\lim_{x \\to \\infty} (1 + \\frac{1}{x})^x = e$", 1200, 1000); dislin.messag ("$\\mu = \\sum_{i=1}^n x_i p_i$", 150, 1300); dislin.messag ("$\\mu = \\int_{-\\infty}^ \\infty x f(x) dx$", 1200, 1300); dislin.messag ("$\\overline{x} = \\frac{1}{n} \\sum_{i=1}^n x_i$", 150, 1600); dislin.messag ("$s^2 = \\frac{1}{n-1} \\sum_{i=1}^n (x_i - \\overline{x})^2$", 1200, 1600); dislin.messag ("$\\sqrt[n]{\\frac{x^n - y^n}{1 + u^{2n}}}$", 150, 1900); dislin.messag ("$\\sqrt[3]{-q + \\sqrt{q^2 + p^3}}$", 1200, 1900); dislin.messag ("$\\int \\frac{dx}{1+x^2} = \\arctan x + C$", 150, 2200); dislin.messag ("$\\int \\frac{dx}{\\sqrt{1+x^2}} = {\\rm arsinh} x + C$", 1200, 2200); dislin.messag ("$\\overline{P_1P_2} = \\sqrt{(x_2-x_1)^2 + (y_2-y_1)^2}$", 150,2500); dislin.messag ("$x = \\frac{x_1 + \\lambda x_2}{1 + \\lambda}\$",
1200, 2500);
dislin.disfin ();
}
}