PtsAlgHorseShoe: Function to find points along a horseshoe shape

Description Usage Arguments Details Value Note References Examples

Description

Function to find points along a horseshoe shape

Usage

1
PtsAlgHorseShoe(z, spacing = 1, endAngles = c(-90, 90))

Arguments

z

- Distance in kilometers from the center of the horseshoe to its lower boundary

spacing

- Degrees between successive point outlining the horseshoe shape

endAngles

- Array of values denoting the degree of rotation for the circular part of the horseshoe distribution

Details

Currently forces use 0,0 as the center, a height 5/4 width, and r2=2*r1 of origin (center)

Value

Returns a 2-dimensional array of decimal degree coordinates outlining a horseshoe shape

Note

Currently only works when endAngles are multiples of -90,90; otherwise rectangle point positions are off

References

[1] From http://mathforum.org/library/drmath/view/51816.html

Examples

1
PtsAlgHorseShoe(z=2000,spacing=1,endAngles=c(-90,90))

Example output

           longOut        latOut
  [1,] -17.9864321 -2.697965e+01
  [2,] -17.9864321  1.083351e-15
  [3,] -17.9838691  3.087776e-01
  [4,] -17.9761805  6.174701e-01
  [5,] -17.9633672  9.259924e-01
  [6,] -17.9454309  1.234259e+00
  [7,] -17.9223739  1.542186e+00
  [8,] -17.8941994  1.849687e+00
  [9,] -17.8609110  2.156678e+00
 [10,] -17.8225132  2.463074e+00
 [11,] -17.7790110  2.768789e+00
 [12,] -17.7304104  3.073739e+00
 [13,] -17.6767179  3.377838e+00
 [14,] -17.6179409  3.681002e+00
 [15,] -17.5540876  3.983146e+00
 [16,] -17.4851667  4.284186e+00
 [17,] -17.4111880  4.584036e+00
 [18,] -17.3321622  4.882612e+00
 [19,] -17.2481005  5.179829e+00
 [20,] -17.1590154  5.475604e+00
 [21,] -17.0649199  5.769850e+00
 [22,] -16.9658283  6.062486e+00
 [23,] -16.8617556  6.353425e+00
 [24,] -16.7527180  6.642585e+00
 [25,] -16.6387325  6.929880e+00
 [26,] -16.5198174  7.215229e+00
 [27,] -16.3959920  7.498547e+00
 [28,] -16.2672766  7.779750e+00
 [29,] -16.1336928  8.058756e+00
 [30,] -15.9952634  8.335481e+00
 [31,] -15.8520125  8.609844e+00
 [32,] -15.7039653  8.881761e+00
 [33,] -15.5511483  9.151151e+00
 [34,] -15.3935896  9.417931e+00
 [35,] -15.2313186  9.682020e+00
 [36,] -15.0643658  9.943337e+00
 [37,] -14.8927637  1.020180e+01
 [38,] -14.7165459  1.045733e+01
 [39,] -14.5357477  1.070985e+01
 [40,] -14.3504061  1.095927e+01
 [41,] -14.1605594  1.120553e+01
 [42,] -13.9662479  1.144853e+01
 [43,] -13.7675134  1.168820e+01
 [44,] -13.5643995  1.192447e+01
 [45,] -13.3569515  1.215725e+01
 [46,] -13.1452166  1.238648e+01
 [47,] -12.9292438  1.261207e+01
 [48,] -12.7090840  1.283395e+01
 [49,] -12.4847898  1.305204e+01
 [50,] -12.2564160  1.326628e+01
 [51,] -12.0240192  1.347659e+01
 [52,] -11.7876579  1.368290e+01
 [53,] -11.5473928  1.388514e+01
 [54,] -11.3032865  1.408324e+01
 [55,] -11.0554036  1.427712e+01
 [56,] -10.8038107  1.446673e+01
 [57,] -10.5485766  1.465199e+01
 [58,] -10.2897721  1.483285e+01
 [59,] -10.0274701  1.500923e+01
 [60,]  -9.7617453  1.518107e+01
 [61,]  -9.4926750  1.534831e+01
 [62,]  -9.2203380  1.551089e+01
 [63,]  -8.9448156  1.566875e+01
 [64,]  -8.6661907  1.582184e+01
 [65,]  -8.3845487  1.597009e+01
 [66,]  -8.0999767  1.611345e+01
 [67,]  -7.8125638  1.625187e+01
 [68,]  -7.5224012  1.638530e+01
 [69,]  -7.2295818  1.651368e+01
 [70,]  -6.9342006  1.663697e+01
 [71,]  -6.6363542  1.675513e+01
 [72,]  -6.3361413  1.686809e+01
 [73,]  -6.0336621  1.697584e+01
 [74,]  -5.7290187  1.707831e+01
 [75,]  -5.4223145  1.717547e+01
 [76,]  -5.1136549  1.726729e+01
 [77,]  -4.8031465  1.735372e+01
 [78,]  -4.4908976  1.743474e+01
 [79,]  -4.1770176  1.751031e+01
 [80,]  -3.8616174  1.758041e+01
 [81,]  -3.5448091  1.764500e+01
 [82,]  -3.2267059  1.770406e+01
 [83,]  -2.9074220  1.775756e+01
 [84,]  -2.5870728  1.780550e+01
 [85,]  -2.2657742  1.784783e+01
 [86,]  -1.9436432  1.788456e+01
 [87,]  -1.6207975  1.791566e+01
 [88,]  -1.2973552  1.794113e+01
 [89,]  -0.9734351  1.796094e+01
 [90,]  -0.6491562  1.797510e+01
 [91,]  -0.3246380  1.798360e+01
 [92,]   0.0000000  1.798643e+01
 [93,]   0.3246380  1.798360e+01
 [94,]   0.6491562  1.797510e+01
 [95,]   0.9734351  1.796094e+01
 [96,]   1.2973552  1.794113e+01
 [97,]   1.6207975  1.791566e+01
 [98,]   1.9436432  1.788456e+01
 [99,]   2.2657742  1.784783e+01
[100,]   2.5870728  1.780550e+01
[101,]   2.9074220  1.775756e+01
[102,]   3.2267059  1.770406e+01
[103,]   3.5448091  1.764500e+01
[104,]   3.8616174  1.758041e+01
[105,]   4.1770176  1.751031e+01
[106,]   4.4908976  1.743474e+01
[107,]   4.8031465  1.735372e+01
[108,]   5.1136549  1.726729e+01
[109,]   5.4223145  1.717547e+01
[110,]   5.7290187  1.707831e+01
[111,]   6.0336621  1.697584e+01
[112,]   6.3361413  1.686809e+01
[113,]   6.6363542  1.675513e+01
[114,]   6.9342006  1.663697e+01
[115,]   7.2295818  1.651368e+01
[116,]   7.5224012  1.638530e+01
[117,]   7.8125638  1.625187e+01
[118,]   8.0999767  1.611345e+01
[119,]   8.3845487  1.597009e+01
[120,]   8.6661907  1.582184e+01
[121,]   8.9448156  1.566875e+01
[122,]   9.2203380  1.551089e+01
[123,]   9.4926750  1.534831e+01
[124,]   9.7617453  1.518107e+01
[125,]  10.0274701  1.500923e+01
[126,]  10.2897721  1.483285e+01
[127,]  10.5485766  1.465199e+01
[128,]  10.8038107  1.446673e+01
[129,]  11.0554036  1.427712e+01
[130,]  11.3032865  1.408324e+01
[131,]  11.5473928  1.388514e+01
[132,]  11.7876579  1.368290e+01
[133,]  12.0240192  1.347659e+01
[134,]  12.2564160  1.326628e+01
[135,]  12.4847898  1.305204e+01
[136,]  12.7090840  1.283395e+01
[137,]  12.9292438  1.261207e+01
[138,]  13.1452166  1.238648e+01
[139,]  13.3569515  1.215725e+01
[140,]  13.5643995  1.192447e+01
[141,]  13.7675134  1.168820e+01
[142,]  13.9662479  1.144853e+01
[143,]  14.1605594  1.120553e+01
[144,]  14.3504061  1.095927e+01
[145,]  14.5357477  1.070985e+01
[146,]  14.7165459  1.045733e+01
[147,]  14.8927637  1.020180e+01
[148,]  15.0643658  9.943337e+00
[149,]  15.2313186  9.682020e+00
[150,]  15.3935896  9.417931e+00
[151,]  15.5511483  9.151151e+00
[152,]  15.7039653  8.881761e+00
[153,]  15.8520125  8.609844e+00
[154,]  15.9952634  8.335481e+00
[155,]  16.1336928  8.058756e+00
[156,]  16.2672766  7.779750e+00
[157,]  16.3959920  7.498547e+00
[158,]  16.5198174  7.215229e+00
[159,]  16.6387325  6.929880e+00
[160,]  16.7527180  6.642585e+00
[161,]  16.8617556  6.353425e+00
[162,]  16.9658283  6.062486e+00
[163,]  17.0649199  5.769850e+00
[164,]  17.1590154  5.475604e+00
[165,]  17.2481005  5.179829e+00
[166,]  17.3321622  4.882612e+00
[167,]  17.4111880  4.584036e+00
[168,]  17.4851667  4.284186e+00
[169,]  17.5540876  3.983146e+00
[170,]  17.6179409  3.681002e+00
[171,]  17.6767179  3.377838e+00
[172,]  17.7304104  3.073739e+00
[173,]  17.7790110  2.768789e+00
[174,]  17.8225132  2.463074e+00
[175,]  17.8609110  2.156678e+00
[176,]  17.8941994  1.849687e+00
[177,]  17.9223739  1.542186e+00
[178,]  17.9454309  1.234259e+00
[179,]  17.9633672  9.259924e-01
[180,]  17.9761805  6.174701e-01
[181,]  17.9838691  3.087776e-01
[182,]  17.9864321  1.083351e-15
[183,]  18.4954710 -2.697521e+01
[184,]   8.9932161 -2.697965e+01
[185,]  -8.9932161  5.484173e-16
[186,]  -8.9918687  1.563098e-01
[187,]  -8.9878271  3.125731e-01
[188,]  -8.9810922  4.687435e-01
[189,]  -8.9716658  6.247747e-01
[190,]  -8.9595503  7.806201e-01
[191,]  -8.9447490  9.362335e-01
[192,]  -8.9272656  1.091569e+00
[193,]  -8.9071047  1.246579e+00
[194,]  -8.8842716  1.401219e+00
[195,]  -8.8587722  1.555442e+00
[196,]  -8.8306133  1.709203e+00
[197,]  -8.7998021  1.862455e+00
[198,]  -8.7663468  2.015152e+00
[199,]  -8.7302561  2.167250e+00
[200,]  -8.6915396  2.318703e+00
[201,]  -8.6502074  2.469465e+00
[202,]  -8.6062705  2.619491e+00
[203,]  -8.5597405  2.768737e+00
[204,]  -8.5106297  2.917157e+00
[205,]  -8.4589511  3.064708e+00
[206,]  -8.4047186  3.211344e+00
[207,]  -8.3479466  3.357022e+00
[208,]  -8.2886503  3.501698e+00
[209,]  -8.2268457  3.645328e+00
[210,]  -8.1625493  3.787869e+00
[211,]  -8.0957785  3.929278e+00
[212,]  -8.0265514  4.069511e+00
[213,]  -7.9548868  4.208528e+00
[214,]  -7.8808041  4.346284e+00
[215,]  -7.8043237  4.482739e+00
[216,]  -7.7254664  4.617851e+00
[217,]  -7.6442539  4.751579e+00
[218,]  -7.5607087  4.883881e+00
[219,]  -7.4748538  5.014718e+00
[220,]  -7.3867130  5.144050e+00
[221,]  -7.2963110  5.271837e+00
[222,]  -7.2036730  5.398039e+00
[223,]  -7.1088249  5.522617e+00
[224,]  -7.0117936  5.645534e+00
[225,]  -6.9126063  5.766752e+00
[226,]  -6.8112912  5.886233e+00
[227,]  -6.7078771  6.003939e+00
[228,]  -6.6023935  6.119835e+00
[229,]  -6.4948708  6.233884e+00
[230,]  -6.3853397  6.346052e+00
[231,]  -6.2738320  6.456302e+00
[232,]  -6.1603799  6.564601e+00
[233,]  -6.0450164  6.670915e+00
[234,]  -5.9277751  6.775210e+00
[235,]  -5.8086905  6.877453e+00
[236,]  -5.6877974  6.977614e+00
[237,]  -5.5651316  7.075659e+00
[238,]  -5.4407294  7.171558e+00
[239,]  -5.3146276  7.265281e+00
[240,]  -5.1868639  7.356798e+00
[241,]  -5.0574765  7.446080e+00
[242,]  -4.9265042  7.533098e+00
[243,]  -4.7939864  7.617826e+00
[244,]  -4.6599631  7.700236e+00
[245,]  -4.5244749  7.780302e+00
[246,]  -4.3875630  7.857997e+00
[247,]  -4.2492692  7.933299e+00
[248,]  -4.1096356  8.006181e+00
[249,]  -3.9687051  8.076621e+00
[250,]  -3.8265211  8.144597e+00
[251,]  -3.6831273  8.210086e+00
[252,]  -3.5385682  8.273067e+00
[253,]  -3.3928884  8.333520e+00
[254,]  -3.2461333  8.391425e+00
[255,]  -3.0983486  8.446765e+00
[256,]  -2.9495805  8.499520e+00
[257,]  -2.7998753  8.549673e+00
[258,]  -2.6492802  8.597209e+00
[259,]  -2.4978424  8.642113e+00
[260,]  -2.3456096  8.684368e+00
[261,]  -2.1926298  8.723963e+00
[262,]  -2.0389514  8.760883e+00
[263,]  -1.8846229  8.795117e+00
[264,]  -1.7296933  8.826653e+00
[265,]  -1.5742117  8.855482e+00
[266,]  -1.4182277  8.881593e+00
[267,]  -1.2617907  8.904980e+00
[268,]  -1.1049506  8.925632e+00
[269,]  -0.9477574  8.943545e+00
[270,]  -0.7902612  8.958712e+00
[271,]  -0.6325125  8.971128e+00
[272,]  -0.4745614  8.980789e+00
[273,]  -0.3164586  8.987692e+00
[274,]  -0.1582546  8.991835e+00
[275,]   0.0000000  8.993216e+00
[276,]   0.1582546  8.991835e+00
[277,]   0.3164586  8.987692e+00
[278,]   0.4745614  8.980789e+00
[279,]   0.6325125  8.971128e+00
[280,]   0.7902612  8.958712e+00
[281,]   0.9477574  8.943545e+00
[282,]   1.1049506  8.925632e+00
[283,]   1.2617907  8.904980e+00
[284,]   1.4182277  8.881593e+00
[285,]   1.5742117  8.855482e+00
[286,]   1.7296933  8.826653e+00
[287,]   1.8846229  8.795117e+00
[288,]   2.0389514  8.760883e+00
[289,]   2.1926298  8.723963e+00
[290,]   2.3456096  8.684368e+00
[291,]   2.4978424  8.642113e+00
[292,]   2.6492802  8.597209e+00
[293,]   2.7998753  8.549673e+00
[294,]   2.9495805  8.499520e+00
[295,]   3.0983486  8.446765e+00
[296,]   3.2461333  8.391425e+00
[297,]   3.3928884  8.333520e+00
[298,]   3.5385682  8.273067e+00
[299,]   3.6831273  8.210086e+00
[300,]   3.8265211  8.144597e+00
[301,]   3.9687051  8.076621e+00
[302,]   4.1096356  8.006181e+00
[303,]   4.2492692  7.933299e+00
[304,]   4.3875630  7.857997e+00
[305,]   4.5244749  7.780302e+00
[306,]   4.6599631  7.700236e+00
[307,]   4.7939864  7.617826e+00
[308,]   4.9265042  7.533098e+00
[309,]   5.0574765  7.446080e+00
[310,]   5.1868639  7.356798e+00
[311,]   5.3146276  7.265281e+00
[312,]   5.4407294  7.171558e+00
[313,]   5.5651316  7.075659e+00
[314,]   5.6877974  6.977614e+00
[315,]   5.8086905  6.877453e+00
[316,]   5.9277751  6.775210e+00
[317,]   6.0450164  6.670915e+00
[318,]   6.1603799  6.564601e+00
[319,]   6.2738320  6.456302e+00
[320,]   6.3853397  6.346052e+00
[321,]   6.4948708  6.233884e+00
[322,]   6.6023935  6.119835e+00
[323,]   6.7078771  6.003939e+00
[324,]   6.8112912  5.886233e+00
[325,]   6.9126063  5.766752e+00
[326,]   7.0117936  5.645534e+00
[327,]   7.1088249  5.522617e+00
[328,]   7.2036730  5.398039e+00
[329,]   7.2963110  5.271837e+00
[330,]   7.3867130  5.144050e+00
[331,]   7.4748538  5.014718e+00
[332,]   7.5607087  4.883881e+00
[333,]   7.6442539  4.751579e+00
[334,]   7.7254664  4.617851e+00
[335,]   7.8043237  4.482739e+00
[336,]   7.8808041  4.346284e+00
[337,]   7.9548868  4.208528e+00
[338,]   8.0265514  4.069511e+00
[339,]   8.0957785  3.929278e+00
[340,]   8.1625493  3.787869e+00
[341,]   8.2268457  3.645328e+00
[342,]   8.2886503  3.501698e+00
[343,]   8.3479466  3.357022e+00
[344,]   8.4047186  3.211344e+00
[345,]   8.4589511  3.064708e+00
[346,]   8.5106297  2.917157e+00
[347,]   8.5597405  2.768737e+00
[348,]   8.6062705  2.619491e+00
[349,]   8.6502074  2.469465e+00
[350,]   8.6915396  2.318703e+00
[351,]   8.7302561  2.167250e+00
[352,]   8.7663468  2.015152e+00
[353,]   8.7998021  1.862455e+00
[354,]   8.8306133  1.709203e+00
[355,]   8.8587722  1.555442e+00
[356,]   8.8842716  1.401219e+00
[357,]   8.9071047  1.246579e+00
[358,]   8.9272656  1.091569e+00
[359,]   8.9447490  9.362335e-01
[360,]   8.9595503  7.806201e-01
[361,]   8.9716658  6.247747e-01
[362,]   8.9810922  4.687435e-01
[363,]   8.9878271  3.125731e-01
[364,]   8.9918687  1.563098e-01
[365,]   8.9932161  5.484173e-16
[366,]  -8.4841772 -2.697521e+01

GeoRange documentation built on May 1, 2019, 8:03 p.m.