Exchanging negative values in a matrix with 0

Is it possible to replace all the negative values in this matrix with zeros?

 matrix = 71.7231000000000  74.7231000000000  33.9028000000000  36.9028000000000
87.0232250000000  90.0232250000000  45.6629000000000  48.6629000000000
102.113350000000  105.113350000000  132.513550000000  135.513550000000
117.333450000000  120.333450000000  205.214100000000  208.214100000000
150.103700000000  153.103700000000  235.264350000000  238.264350000000
165.233825000000  168.233825000000  309.764825000000  312.764825000000
189.854025000000  192.854025000000  368.645250000000  371.645250000000
219.944225000000  222.944225000000  398.475450000000  401.475450000000
250.084425000000  253.084425000000  413.505550000000  416.505550000000
264.904525000000  267.904525000000  433.975675000000  436.975675000000
279.544650000000  282.544650000000  540.436375000000  543.436375000000
294.434750000000  297.434750000000  571.176575000000  574.176575000000
322.934950000000  325.934950000000  677.397250000000  680.397250000000
337.845050000000  340.845050000000  738.627625000000  741.627625000000
353.095150000000  356.095150000000  769.227800000000  772.227800000000
383.445350000000  386.445350000000  818.788100000000  821.788100000000
449.015775000000  452.015775000000  833.818200000000  836.818200000000
463.985900000000  466.985900000000  848.848300000000  851.848300000000
479.246000000000  482.246000000000  878.928450000000  881.928450000000
494.436075000000  497.436075000000  900.818575000000  903.818575000000
510.076250000000  513.076250000000  931.908775000000  934.908775000000
524.936375000000  527.936375000000  962.268975000000  965.268975000000
555.466475000000  558.466475000000  1009.10922500000  1012.10922500000
586.176700000000  589.176700000000  1054.06947500000  1057.06947500000
601.296775000000  604.296775000000  1116.57982500000  1119.57982500000
616.296875000000  619.296875000000  1131.61990000000  1134.61990000000
631.666950000000  634.666950000000  1146.64997500000  1149.64997500000
647.077075000000  650.077075000000  1176.75015000000  1179.75015000000
662.277150000000  665.277150000000  1191.79022500000  1194.79022500000
692.367350000000  695.367350000000  1206.82032500000  1209.82032500000
707.527425000000  710.527425000000  1223.95042500000  1226.95042500000
722.557550000000  725.557550000000  1284.98075000000  1287.98075000000
753.667725000000  756.667725000000  1330.36100000000  1333.36100000000
784.257900000000  787.257900000000  1345.39107500000  1348.39107500000
802.008000000000  805.008000000000  1377.19125000000  1380.19125000000
863.588375000000  866.588375000000  1392.22132500000  1395.22132500000
915.848675000000  918.848675000000  1454.93165000000  1457.93165000000
946.878875000000  949.878875000000  1501.17190000000  1504.17190000000
978.249050000000  981.249050000000  1516.21197500000  1519.21197500000
993.469125000000  996.469125000000  1528.94205000000  1531.94205000000
1023.80932500000  1026.80932500000  1543.97212500000  1546.97212500000
1038.77940000000  1041.77940000000  1559.00220000000  1562.00220000000
1068.55957500000  1071.55957500000  1574.04227500000  1577.04227500000
1084.99965000000  1087.99965000000  -5  -2
1101.29975000000  1104.29975000000  -5  -2
1161.61007500000  1164.61007500000  -5  -2
1238.82050000000  1241.82050000000  -5  -2
1253.75060000000  1256.75060000000  -5  -2
1269.20067500000  1272.20067500000  -5  -2
1298.59082500000  1301.59082500000  -5  -2
1314.54090000000  1317.54090000000  -5  -2
1360.43115000000  1363.43115000000  -5  -2
1407.26140000000  1410.26140000000  -5  -2
1423.53150000000  1426.53150000000  -5  -2
1439.64160000000  1442.64160000000  -5  -2
1469.96172500000  1472.96172500000  -5  -2
1485.48182500000  1488.48182500000  -5  -2

Answer 1

[Image Analyst]

Here's another alternate way:

matrix = max(matrix, 0)

[Hudson]

thanks bro

Answer 2

[Sean de Wolski]

x(x<0)=0;

[Colin Price]

This does not work

[Image Analyst]

Yes it does. Can you give a counterexample where it does not work?

[Walter Roberson]

You could argue that it is not changing negative 0