The following code calculates average monthly cross sectional Pearson Product moment Correlations. Now, i want to calculate Spearman's Rank Correlations instead. Could someone modify below given code so that it could do that. I append both the code as well as example data set below:

Code:
local vbles rt idiovol beta size bmratio mom rev illiq coskew idioskew
local vbles: list sort vbles

frame create correlations
frame create cumulative


levelsof mdate, local(mdates)
foreach r of local mdates {
    capture corr `vbles' if mdate == `r'
    if c(rc) == 0 {
        matrix C = r(C)
        frame correlations {
            svmat C, names(col)
            gen mdate = `r'
            gen vble = ""
            local i = 1
            foreach v of local vbles {
                replace vble = `"`v'"' in `i'
                local ++i
            }
        }
        frame cumulative: frameappend correlations
        frame correlations: clear
    }
    else if c(rc) != 2000 { // UNEXPECTED ERROR
        display as error "Unexpected error in -corr-"
        exit `c(rc)'
    }
    else {
        continue
    }
}

frame drop correlations
frame change cumulative
frame put _all, into(averages)
frame change averages
collapse (mean) `vbles', by(vble)
Code:
* Example generated by -dataex-. To install: ssc install dataex
clear
input int stock_id str52 stock float(mdate rt idiovol beta size bmratio mom rev illiq coskew idioskew)
1 "3M India Ltd."                   510  .0520779 .0916615  .7510074 5.772126 .2301245  -.2421852  .0086664  .568561 -11.246819   .6554044
1 "3M India Ltd."                   511  .0533333 .1182759  .7796013 5.822898 .2346667 -.08882007  .0520779 .0834102  -12.68292   .7936354
1 "3M India Ltd."                   512 -.0031646  .033802  .7886676 5.874875 .2227848 -.03028263  .0533333 .1184029 -12.682983   .8757973
1 "3M India Ltd."                   513  .0031746 .0558377  .6494458 5.871695 .2379683   .1995213 -.0031646 .0922577 -16.301088   1.004618
1 "3M India Ltd."                   514 -.0082279 .0225026  .7004792 5.874875 .2372152  .18131915  .0031746 .4863775 -16.789318  1.0411569
1 "3M India Ltd."                   516 -.0228061 .0447686  .6646857 5.831355 .2478599   .1798179 -.0346203 .0671644 -17.989431  1.2790872
1 "3M India Ltd."                   517 -.0630813 .0643021  .6528904 5.808293 .2536445  .17160204 -.0228061 .1301709  -17.13694   1.502053
1 "3M India Ltd."                   518 -.1326715  .084525 .59209836 5.743131  .270722  .10628778 -.0630813 2.364254 -12.111776  1.1316483
1 "3M India Ltd."                   519  .1862643 .1171338  .5532332  5.60079 .3351925 -.10605558 -.1326715 1.962032 -15.268206  .28582826
1 "3M India Ltd."                   520  .1052632 .1162964  .7139871 5.771597 .2825614  -.2477172  .1862643 2.644915 -17.685534   .3838049
1 "3M India Ltd."                   521  .0609524 .0747315   .700519 5.871695 .2556508  .03894482  .1052632 .0748728  -21.36768   .3219067
2 "A B B India Ltd."                510  .0310697 .0908318  .4928325 7.037915 .3767442   .0203469  .0927018 .0644927  -7.955564   .8680918
2 "A B B India Ltd."                511  .0193072  .066539  .4566708 7.068512 .3931433   .1042416  .0310697 .0393069  -7.885917   .8717429
2 "A B B India Ltd."                512 -.0049567 .0326465  .4516272 7.087632 .3856966  .22836693  .0193072 .0314682  -8.348626   .8894266
2 "A B B India Ltd."                513 -.1465931  .047887   .360816 7.082666 .4021704   .3833118 -.0049567 .1093975  -2.665329   1.035254
2 "A B B India Ltd."                514 -.0002085 .1316279  .4027637  6.92414 .4712529   .4084741 -.1465931 .0762896  -2.551017   .4909603
2 "A B B India Ltd."                515  .0369058 .0800709  .4821406 6.923934 .4713511  .19272646 -.0002085 .0238648  -.5813355   .5721269
2 "A B B India Ltd."                516  .1230645  .039354  .4618599 6.960177 .4709431  .19666737  .0369058 .0246835  -1.375635  .57083863
2 "A B B India Ltd."                517   .147538 .0784511  .5004291  7.07624 .4193375  .14288685  .1230645 .0576087  -1.888188   .6426939
2 "A B B India Ltd."                518 -.1015758 .0698819  .4680085 7.213857 .3654236  .11156937   .147538   .00926  17.036205   .2437781
2 "A B B India Ltd."                519  .0703369 .0813389  .4644257 7.106745 .4139284  .22523545 -.1015758 .0459729   9.548818   .1989993
2 "A B B India Ltd."                520  .1148791  .071224  .5211874 7.174716 .3867272  .12083534  .0703369 .0758109  16.906883  .05292072
2 "A B B India Ltd."                521  .0733518 .0411988  .5875958 7.283462 .3468782   .2675898  .1148791 .0236384   21.06798  .01546109
3 "A C C Ltd."                      510 -.1629956 .0494911 1.0422283 7.906322 .3757709   .1532081  .0505785 .0001693  -5.548719    .575628
3 "A C C Ltd."                      511   .037594 .0576206 1.0449023 7.728468 .4576692  .18472496 -.1629956 .0003263  -5.354321   .6685103
3 "A C C Ltd."                      512 -.0018116 .0478863 1.0404295  7.76537 .4410869  .10122582   .037594 .0003022  -5.677112    .675517
3 "A C C Ltd."                      513 -.0366606 .0545035   .927909 7.763659 .4440653  .16578344 -.0018116 .0004162   -.763524   .3999104
3 "A C C Ltd."                      514  .2324793 .0545389  .9890953 7.726332 .4609646  .09409234 -.0366606 .0004073 -.05508276   .0857189
3 "A C C Ltd."                      515  .0094772 .0679346  .9965018  7.93543 .3740752 -.22372445  .2324793 .0003013   .6842356  .12869345
3 "A C C Ltd."                      516 -.1341612  .048411  .9468574 7.944861 .3777105  .11921484  .0094772 .0003085  -.6181256   .1951404
3 "A C C Ltd."                      517  .0776496 .0739987  .9150216 7.801068 .4360965  .07467366 -.1341612 .0003754 -1.0836273  .01052911
3 "A C C Ltd."                      518 -.1009413  .085914  .9575378 7.875917 .4047387  -.0813625  .0776496 .0003803  1.8999788   .3630732
3 "A C C Ltd."                      519 -.0548737 .0731908  .8841012 7.769539 .4547292  .05469688 -.1009413  .000468   -6.26982   .4172138
3 "A C C Ltd."                      520  .1100077 .0552034  .8759887 7.713101 .4811307 -.02480884 -.0548737 .0005921  -3.216651   .2910111
3 "A C C Ltd."                      521  .1493462 .0546524   .888853 7.817489  .433448 -.08366531  .1100077 .0003609  2.0965748  .25523832
4 "A D C India Communications Ltd." 510 -.1504425 .0905394 1.5756077 3.663049 .8875517  -.2089349 -.0280963 .1526467  -11.18617   .9999411
4 "A D C India Communications Ltd." 511  .0229167 .0694774  1.543413 3.500137 1.064583  .04492957 -.1504425 .4789313  -9.748292  1.0794683
4 "A D C India Communications Ltd." 512 -.0902919 .0908449  1.514939 3.522825 1.040733  -.3168728  .0229167 .7972752  -7.856839  1.2683494
4 "A D C India Communications Ltd." 515  .0135135 .0816317 1.2613417 3.422306 1.168619  -.3657852  .0918033 1.403588  -14.12266  1.5074098
4 "A D C India Communications Ltd." 516 -.1525926 .0751573 1.1426127 3.435599 1.179704  -.2180948  .0135135 .5731306   -20.8343   1.769466
4 "A D C India Communications Ltd." 517 -.0821678 .0859583 1.1992506 3.269949 1.392133 -.18733987 -.1525926 2.918928 -19.735325  1.8279516
4 "A D C India Communications Ltd." 518 -.0895238 .1204351 1.2922428 3.184284 1.516762  -.3042599 -.0821678 1.175537 -16.862587  1.8053592
4 "A D C India Communications Ltd." 519  .1757323 .1155414 1.3370316 3.090588 1.741423  -.3827892 -.0895238  .414616  -10.48587    1.98192
4 "A D C India Communications Ltd." 520  .1868327 .1650361 1.1820819 3.252311 1.481139  -.6628183  .1757323 .2605021   6.146185   .8412775
4 "A D C India Communications Ltd." 521  .1124438  .198927  .9547688 3.423611 1.247976  -.3787015  .1868327 .1113622  1.0847142  1.0265048
5 "A G C Networks Ltd."             510 -.2367297 .0690548 1.8930784 5.452411 .3992679   .9802982 -.0006098 .0126685  -9.191351  1.3381217
5 "A G C Networks Ltd."             511  .1151079 .1420509 1.9465487 5.182289 .5319744   1.089498 -.2367297 .0193325   -9.93711  1.3835753
5 "A G C Networks Ltd."             512 -.0605018 .1398574 1.9666855 5.291192 .4770609   .9171872  .1151079 .0258063 -10.012973  1.3671902
5 "A G C Networks Ltd."             513 -.1571799 .1039934 1.9659363 5.228753 .5256772  1.3431653 -.0605018 .0527003 -15.934067   1.386089
5 "A G C Networks Ltd."             514  .1819663 .0866767 1.9043994 5.057582 .6238117  1.1347044 -.1571799 .0330671 -13.073632  1.4675443
5 "A G C Networks Ltd."             515  .1331189 .1175809  1.785625 5.224725 .5277671   .8423392  .1819663 .0228892  -18.27487  1.4467278
5 "A G C Networks Ltd."             516  -.153035 .0672813    1.8865 5.349865 .4909091   .8579108  .1331189 .0083676  -14.44452   1.397789
5 "A G C Networks Ltd."             517 -.0721469 .1157434 1.8121196 5.183692 .5796488   .3868339  -.153035 .0217256  -9.040719   1.550805
5 "A G C Networks Ltd."             518  -.176845 .0434617  1.726426 5.108729 .6247742   .0829706 -.0721469 .0481924  -1.276427  1.0308088
5 "A G C Networks Ltd."             519  .0654128 .0687536 1.6099684 4.914198 .7905957 -.27523685  -.176845 .0937928  -8.940083   .9531655
5 "A G C Networks Ltd."             520  .2004708 .1633577 1.6187953 4.977492 .7421286  -.5336088  .0654128 .0379236 -8.3060665   .8918641
5 "A G C Networks Ltd."             521  -.001634 .1845316  1.503249 5.160262 .6181373  -.3614422  .2004708 .0178599 -18.830147   .9789375
6 "Aarti Industries Ltd."           512 -.0592734 .0837323 .54238987 4.332705 1.748526   .6621372  .0717213 4.852063   -2.51095   .2593939
6 "Aarti Industries Ltd."           513  .0670732 .0846717  .3043987 4.272769 1.998985    .730141 -.0592734  19.9523  -1.573169  .27582726
6 "Aarti Industries Ltd."           514 -.0342857 .0633011  .2653327 4.337421 1.873751  .57827497  .0670732 7.869865 -4.0800953  .26782554
6 "Aarti Industries Ltd."           516   .023077  .105984  .2590122  4.32625 2.001283   .6654727   .025641 8.844965  -6.870831  .25357485
6 "Aarti Industries Ltd."           517  -.075188 .1041367  .2115522 4.349245 1.955799   .6445187   .023077 5.612283  -9.697611 -.02749905
6 "Aarti Industries Ltd."           518 -.0345529  .051413  .3444578 4.271095 2.114915  .49636275  -.075188 7.338284  -11.18653  .06150553
6 "Aarti Industries Ltd."           519  .0694737 .1425339  .4426504 4.236567 2.103158   .4036309 -.0345529 20.23219 -11.708984 -.00124911
6 "Aarti Industries Ltd."           521  .2765567 .0532722  .4167594 4.375505 1.830229  .09885359  .0748032  6.17208 -19.861423 -.01269575
7 "Aban Offshore Ltd."              510 -.0145471 .1671569   .786585 4.364499 1.677616  1.2047646  .3487341  .275687  1.4518754   .3233959
7 "Aban Offshore Ltd."              511  .1190476 .1594215  .9475352 4.349761    1.752   1.134144 -.0145471 .1244985  1.7804716   .3959191
7 "Aban Offshore Ltd."              512 -.0719149  .159507  .9419548 4.462223 1.565617  1.1239259  .1190476 .1111811  2.2743268    .413595
7 "Aban Offshore Ltd."              513  .0729023 .0699517  .9861982 4.387636 1.738377   1.481017 -.0719149 .2772467    16.4047   .4144061
7 "Aban Offshore Ltd."              514  .1435898 .0848001  1.111411 4.457945 1.620256   1.344908  .0729023 .2621013  16.005941   .4511779
7 "Aban Offshore Ltd."              515   .107997 .1112043 1.1869622 4.592186 1.416816  1.3816173  .1435898 .2400481  18.010456   .4047494
7 "Aban Offshore Ltd."              516  .1129848 .0938856 1.1931382 4.694736 1.244317  1.5549613   .107997  .164567   21.16874   .4284045
7 "Aban Offshore Ltd."              517 -.0842424 .0936677 1.2640696 4.801805    1.118  1.7029583  .1129848 .1848726   20.92513   .4412946
7 "Aban Offshore Ltd."              518 -.1528789 .0507528 1.4281996 4.713756 1.220847   1.704832 -.0842424 .6507712   .6502991   .6223256
7 "Aban Offshore Ltd."              519  .0609375 .0702427 1.4455564 4.547859 1.448594   .8668396 -.1528789 .7413276   1.863197   .5414214
7 "Aban Offshore Ltd."              520  .4554492 .1726061 1.4533905 4.606968  1.36539   .7503114  .0609375 .4639567   -.680744   .7698011
7 "Aban Offshore Ltd."              521  .4950671 .1588599  1.377457 4.982305  .938123   .6426098  .4554492 .1463009 -14.740382   .8392516
8 "Abbott India Ltd."               510 -.0880134 .0400271   .470697 6.180348 .3274099   .0607995 -.0076526 .0850838  -8.396762  1.0109442
8 "Abbott India Ltd."               511  .0137868 .0384877 .48466095 6.088228 .3590074  .14496128 -.0880134 .1205587   -8.26308   1.193236
8 "Abbott India Ltd."               513  .0564663 .0438338  .3456013 6.097377 .3832787   .1589364 -.0045331 1.718449  -5.416703   1.446219
8 "Abbott India Ltd."               514 -.0103448 .0468644 .28133413 6.152307 .3627931   .1486656  .0564663  .141572  -6.230135  1.4597585
8 "Abbott India Ltd."               515 -.0254355 .0409994  .2814446 6.141908 .3665854   .1533796 -.0103448  .151724  -4.753911  1.7025014
8 "Abbott India Ltd."               516  .0961744 .0455454 .28902167 6.116135 .3687164     .22343 -.0254355 .2158099 -3.2050874  1.6151198
8 "Abbott India Ltd."               517  .0260926 .0724427 .29424652 6.207966 .3363666   .1590225  .0961744 .0152713  -3.329112  1.8826425
8 "Abbott India Ltd."               518 -.1371583 .0446494  .2225012 6.233724 .3480292  .00621077  .0260926 .0122063  -3.963056   .6325775
8 "Abbott India Ltd."               519 -.0471542 .0464687 .29565042 6.027748  .425419  .03717353 -.1371583  .114091 -4.4661913   .5295486
8 "Abbott India Ltd."               520  .0477479 .0512873   .303145 5.979443 .4464721 -.10210545 -.0471542 .0304516  -2.774276  .58890784
8 "Abbott India Ltd."               521  .0789668 .0499418  .3377357 6.026083 .4261255  -.1277718  .0477479 .0181718  -2.489107   .5782541
9 "Accelya Solutions India Ltd."    510  -.352459  .089253  2.504547 4.345881 .6719821   .8174614 -.0400573 .0078417  -7.170419  1.0033356
9 "Accelya Solutions India Ltd."    511  .2543153 .0797726  2.491825 3.911423 1.040046  1.0159469  -.352459  .025954  -5.988738  1.0148292
9 "Accelya Solutions India Ltd."    512 -.1348624 .1268215  2.525519 4.137883 .8291743   .6850929  .2543153 .0175791  -6.570995  1.0163718
9 "Accelya Solutions India Ltd."    513 -.1410393 .0755205 2.5902946  3.99305 .9664899  1.2154334 -.1348624 .0152915  -6.270335  1.0201876
9 "Accelya Solutions India Ltd."    514  .2209877 .0760453  2.539881 3.840956 1.125185  .43133375 -.1410393 .0280572  -2.594969  1.0481699
9 "Accelya Solutions India Ltd."    515  -.041456 .0705575  2.496209 4.040768 .9215369   .2321703  .2209877 .0410044  -7.490185  1.0953172
9 "Accelya Solutions India Ltd."    516 -.2099156 .1099722 2.4161656 3.998384 .9698312  -.0050194  -.041456 .0168685   .4846404   .9823444
9 "Accelya Solutions India Ltd."    517 -.0921228 .0985367 2.3392482 3.762827 1.227503 -.12609863 -.2099156 .0556873 -1.2859864  1.0380969
9 "Accelya Solutions India Ltd."    518 -.3205882 .0484582  2.499194 3.666122 1.352059  -.3019144 -.0921228 .0920183  -8.733504    .901312
9 "Accelya Solutions India Ltd."    519  .1363636 .0632388  2.696745 3.279783  2.03723  -.4818861 -.3205882 .1479528 -1.8722357   .7565902
9 "Accelya Solutions India Ltd."    520  .2038095 .0869685   2.84804 3.407511 1.792762  -.8492668  .1363636 .1763114   8.656399   .7973647
9 "Accelya Solutions India Ltd."    521  .1787975 .2288317  2.633117 3.592919 1.489241   -.720834  .2038095 .0644834 -11.662564  1.1499352
end
format %tm mdate