HI,

Im trying to run a tcl file in ns2. but it gives error that, "can't read "node(0)": no such variable
while executing
"$node(0) set X_ 1801.505981"
(file "univ-50.tcl" line 6)


im writing the tcl file below check it please. i have taken the tcl from the internet and just want to run and explore.

here is the tcl text

#
# Number of vehicles: 50
# Number of roads: 1188
# Number of intersections: 383
#
$node(0) set X_ 1801.505981
$node(0) set Y_ 782.731323
$node(0) set Z_ 0.000000
$node(1) set X_ 1695.904907
$node(1) set Y_ 778.866089
$node(1) set Z_ 0.000000
$node(2) set X_ 477.922699
$node(2) set Y_ 1248.787231
$node(2) set Z_ 0.000000
$node(3) set X_ 210.072662
$node(3) set Y_ 2103.353760
$node(3) set Z_ 0.000000
$node(4) set X_ 2181.228760
$node(4) set Y_ 1700.063965
$node(4) set Z_ 0.000000
$node(5) set X_ 1430.840210
$node(5) set Y_ 1914.352417
$node(5) set Z_ 0.000000
$node(6) set X_ 1128.953735
$node(6) set Y_ 203.681305
$node(6) set Z_ 0.000000
$node(7) set X_ 670.467224
$node(7) set Y_ 209.207306
$node(7) set Z_ 0.000000
$node(8) set X_ 1779.307007
$node(8) set Y_ 1690.191040
$node(8) set Z_ 0.000000
$node(9) set X_ 488.528839
$node(9) set Y_ 564.404724
$node(9) set Z_ 0.000000
$node(10) set X_ 878.592896
$node(10) set Y_ 821.323486
$node(10) set Z_ 0.000000
$node(11) set X_ 2174.856445
$node(11) set Y_ 1949.242920
$node(11) set Z_ 0.000000
$node(12) set X_ 1960.630371
$node(12) set Y_ 305.517853
$node(12) set Z_ 0.000000
$node(13) set X_ 1095.732910
$node(13) set Y_ 1773.420288
$node(13) set Z_ 0.000000
$node(14) set X_ 1489.947754
$node(14) set Y_ 1723.613037
$node(14) set Z_ 0.000000
$node(15) set X_ 2186.609375
$node(15) set Y_ 1778.145142
$node(15) set Z_ 0.000000
$node(16) set X_ 1213.088501
$node(16) set Y_ 2002.204590
$node(16) set Z_ 0.000000
$node(17) set X_ 1816.159790
$node(17) set Y_ 1253.403931
$node(17) set Z_ 0.000000
$node(18) set X_ 1135.082153
$node(18) set Y_ 114.155716
$node(18) set Z_ 0.000000
$node(19) set X_ 2184.263184
$node(19) set Y_ 1555.233643
$node(19) set Z_ 0.000000
$node(20) set X_ 174.366730
$node(20) set Y_ 21.683065
$node(20) set Z_ 0.000000
$node(21) set X_ 1540.234131
$node(21) set Y_ 1463.042358
$node(21) set Z_ 0.000000
$node(22) set X_ 1691.056641
$node(22) set Y_ 1170.371460
$node(22) set Z_ 0.000000
$node(23) set X_ 173.092896
$node(23) set Y_ 392.382874
$node(23) set Z_ 0.000000
$node(24) set X_ 881.893616
$node(24) set Y_ 807.679016
$node(24) set Z_ 0.000000
$node(25) set X_ 964.861511
$node(25) set Y_ 1930.622437
$node(25) set Z_ 0.000000
$node(26) set X_ 481.256531
$node(26) set Y_ 1227.837158
$node(26) set Z_ 0.000000
$node(27) set X_ 1687.848145
$node(27) set Y_ 2194.427490
$node(27) set Z_ 0.000000
$node(28) set X_ 2060.837158
$node(28) set Y_ 1815.844727
$node(28) set Z_ 0.000000
$node(29) set X_ 683.705261
$node(29) set Y_ 1587.558838
$node(29) set Z_ 0.000000
$node(30) set X_ 1525.579712
$node(30) set Y_ 2198.615967
$node(30) set Z_ 0.000000
$node(31) set X_ 675.886169
$node(31) set Y_ 1361.550415
$node(31) set Z_ 0.000000
$node(32) set X_ 299.579834
$node(32) set Y_ 1722.498169
$node(32) set Z_ 0.000000
$node(33) set X_ 1711.694946
$node(33) set Y_ 1137.185669
$node(33) set Z_ 0.000000
$node(34) set X_ 2193.041992
$node(34) set Y_ 1263.767212
$node(34) set Z_ 0.000000
$node(35) set X_ 1934.893433
$node(35) set Y_ 32.380520
$node(35) set Z_ 0.000000
$node(36) set X_ 246.574829
$node(36) set Y_ 511.049072
$node(36) set Z_ 0.000000
$node(37) set X_ 1688.124878
$node(37) set Y_ 1599.701538
$node(37) set Z_ 0.000000
$node(38) set X_ 2159.319824
$node(38) set Y_ 67.757553
$node(38) set Z_ 0.000000
$node(39) set X_ 337.167999
$node(39) set Y_ 2104.530762
$node(39) set Z_ 0.000000
$node(40) set X_ 71.243423
$node(40) set Y_ 323.387817
$node(40) set Z_ 0.000000
$node(41) set X_ 703.627686
$node(41) set Y_ 696.958252
$node(41) set Z_ 0.000000
$node(42) set X_ 2072.211670
$node(42) set Y_ 381.652496
$node(42) set Z_ 0.000000
$node(43) set X_ 654.516235
$node(43) set Y_ 2340.762207
$node(43) set Z_ 0.000000
$node(44) set X_ 47.803631
$node(44) set Y_ 786.738220
$node(44) set Z_ 0.000000
$node(45) set X_ 1700.905640
$node(45) set Y_ 837.982910
$node(45) set Z_ 0.000000
$node(46) set X_ 499.162292
$node(46) set Y_ 524.888977
$node(46) set Z_ 0.000000
$node(47) set X_ 65.316833
$node(47) set Y_ 568.018982
$node(47) set Z_ 0.000000
$node(48) set X_ 1653.817627
$node(48) set Y_ 1690.957520
$node(48) set Z_ 0.000000
$node(49) set X_ 1823.419312
$node(49) set Y_ 346.495300
$node(49) set Z_ 0.000000
$ns_ at 0.000000 "$node(0) setdest 1704.290039 779.661987 16.217083"
$ns_ at 0.000000 "$node(1) setdest 1704.290039 779.661987 15.806971"
$ns_ at 0.000000 "$node(2) setdest 479.313995 1236.250000 13.994448"
$ns_ at 0.901371 "$node(2) setdest 490.450012 1213.979980 15.450345"
$ns_ at 2.512927 "$node(2) setdest 490.450012 1147.160034 15.099848"
$ns_ at 0.000000 "$node(3) setdest 289.998993 2104.879883 14.292765"
$ns_ at 0.000000 "$node(4) setdest 2183.260010 1703.969971 16.328163"
$ns_ at 0.269632 "$node(4) setdest 2049.620117 1703.969971 17.378435"
$ns_ at 0.000000 "$node(5) setdest 1293.705566 1909.598877 13.717971"
$ns_ at 0.000000 "$node(6) setdest 1136.349976 167.279999 15.371242"
$ns_ at 0.000000 "$node(7) setdest 531.494690 211.824997 13.897254"
$ns_ at 0.000000 "$node(8) setdest 1682.020020 1692.829956 13.990965"
$ns_ at 0.000000 "$node(9) setdest 501.585999 568.072998 13.590095"
$ns_ at 0.997981 "$node(9) setdest 501.585999 634.890991 15.150329"
$ns_ at 0.000000 "$node(10) setdest 880.216003 891.023987 15.718129"
$ns_ at 0.000000 "$node(11) setdest 2172.120117 1926.699951 13.868759"
$ns_ at 1.637380 "$node(11) setdest 2049.620117 1926.699951 16.050055"
$ns_ at 0.000000 "$node(12) setdest 1960.540039 401.029999 13.505157"
$ns_ at 0.000000 "$node(13) setdest 1091.800049 1815.329956 14.211115"
$ns_ at 2.962033 "$node(13) setdest 1091.800049 1904.420044 16.472704"
$ns_ at 0.000000 "$node(14) setdest 1316.239624 1720.861694 17.376511"
$ns_ at 0.000000 "$node(15) setdest 2183.260010 1815.329956 17.393623"
$ns_ at 0.000000 "$node(16) setdest 1203.160034 2004.650024 13.794808"
$ns_ at 0.741235 "$node(16) setdest 1091.800049 1948.969971 16.319132"
$ns_ at 0.000000 "$node(17) setdest 1804.630005 1369.880005 17.284842"
$ns_ at 0.000000 "$node(18) setdest 1136.349976 167.279999 13.881583"
$ns_ at 0.000000 "$node(19) setdest 2183.260010 1592.609985 15.670099"
$ns_ at 0.000000 "$node(20) setdest 53.800900 22.509001 15.581398"
$ns_ at 0.000000 "$node(21) setdest 1537.250000 1436.699951 16.667818"
$ns_ at 0.000000 "$node(22) setdest 1693.160034 1225.109985 14.639824"
$ns_ at 0.000000 "$node(23) setdest 245.453995 390.005005 14.058999"
$ns_ at 0.000000 "$node(24) setdest 880.216003 801.934021 16.025017"
$ns_ at 0.000000 "$node(25) setdest 820.390625 2010.513672 16.476934"
$ns_ at 0.000000 "$node(26) setdest 479.313995 1236.250000 15.931511"
$ns_ at 0.541957 "$node(26) setdest 490.450012 1291.930054 13.923464"
$ns_ at 4.620162 "$node(26) setdest 479.313995 1314.199951 13.923136"
$ns_ at 0.000000 "$node(27) setdest 1670.989990 2193.969971 13.882780"
$ns_ at 1.214768 "$node(27) setdest 1570.660034 2182.830078 13.470655"
$ns_ at 0.000000 "$node(28) setdest 2049.620117 1815.329956 16.517635"
$ns_ at 0.679810 "$node(28) setdest 1927.130005 1815.329956 16.973526"
$ns_ at 0.000000 "$node(29) setdest 679.765015 1570.339966 14.339029"
$ns_ at 1.231879 "$node(29) setdest 679.765015 1536.930054 14.318981"
$ns_ at 3.565140 "$node(29) setdest 679.765015 1481.250000 15.714592"
$ns_ at 7.108347 "$node(29) setdest 679.765015 1447.839966 16.366844"
$ns_ at 0.000000 "$node(30) setdest 1514.979980 2171.689941 16.804008"
$ns_ at 0.000000 "$node(31) setdest 679.765015 1392.160034 13.468075"
$ns_ at 2.290929 "$node(31) setdest 679.765015 1447.839966 16.401310"
$ns_ at 0.000000 "$node(32) setdest 301.135010 1703.969971 17.628885"
$ns_ at 0.000000 "$node(33) setdest 1815.760010 1136.020020 14.032576"
$ns_ at 0.000000 "$node(34) setdest 2194.389893 1258.520020 17.415241"
$ns_ at 0.311081 "$node(34) setdest 2060.760010 1258.520020 15.843795"
$ns_ at 0.000000 "$node(35) setdest 1915.880005 32.531601 15.869006"
$ns_ at 1.198187 "$node(35) setdest 1837.930054 33.645199 13.503708"
$ns_ at 6.971261 "$node(35) setdest 1826.790039 32.308899 17.414013"
$ns_ at 0.000000 "$node(36) setdest 245.453995 568.184998 17.695450"
$ns_ at 0.000000 "$node(37) setdest 1682.020020 1692.829956 14.904358"
$ns_ at 0.000000 "$node(38) setdest 2092.159912 70.283501 14.291927"
$ns_ at 0.000000 "$node(39) setdest 457.040985 2104.879883 13.821561"
$ns_ at 0.000000 "$node(40) setdest 67.275597 390.005005 16.889536"

Please edit the code in post #1 to use code tags, i.e.
write [/code] at code text end, and [code] at code start.
.. Or use the # button in the 'Advanced Editor'.

The tcl code that you show, is not meant to be run with $ ns <file>.tcl
.. It is a "traffic" or "scene" file :
To be used together with a tcl file.

Which file are you writing ? ?
And which file is from the Internet ?
Please show a link to the file that you downloaded.

.