Hello,
I provide a sample of my data in the following:
Code:
* Example generated by -dataex-. To install: ssc install dataex
clear
input long GVKEY double fyear float(DA_JONES DA_MJONES DA_LU DD McNicols) double RET_w float(FRET_w taac_w CFO_w lcfo_w fcfo_w)
1004 1990     -8.256     -8.256     -8.256            .             .    .09090909361839294  -.010526316     -8.256           0           .           .
1004 1991  13.341337   13.26765  13.652452   -.04802015    .008925857  -.010526316240429878    .05454545  -.7839892    .0231973    .0970923    .0442312
1004 1992  -8.141216 -8.2323475  -7.350275    -.0796989    -.00977255    .05454545468091965    .01904762 -10.759987   .04250906  .022294113  .016939377
1004 1993  13.566643  14.117864   14.09556    .04626517     .07532828    .01904761977493763     .1972789   23.50899  .018340359    .0460248   .04177724
1004 1994 -14.492256 -14.055967 -14.265173   -.06504817    -.05583758     .1972789168357849   .012552301  -6.257996    .0365279  .016035879    .0592875
1004 1995 -2.4286425 -2.6148415  -3.132785   -.02797665    .017469876   .012552301399409771   .004862237  -11.09899   .05814746  .035825502   .02238301
1004 1996  23.730614   24.75957  24.756886   .028092774     .05883552    .00486223679035902   -.05445544  25.106005   .02176793   .05654956   .05212563
1004 1997  26.225645  27.268093  25.745283   -.06367623     -.0529479   -.05445544421672821     .0871212     25.333   .04309609  .017997146   .05386303
1004 1998   24.24059  24.246626  24.074104   -.01340166    .008550974    .08712121099233627    .21686748   7.257001   .04253913   .03403578  .014988987
1004 1999   .9719733  -.6571926 -1.0798613   -.02949971    -.02102535    .21686747670173645    .10552155  1.4869937   .01383235   .03925657   .06343394
1004 2000   9.092382   8.997414  11.744568   .030657284     .02975682     .1055215522646904   -.06363635 -18.132002   .06220395   .01356414  -.04495963
1004 2001  -98.74294  -99.30154  -99.65705    -.1093418    -.09630986   -.06363634765148163     .4292543 -117.48099  -.04746714    .0656732    .0494875
1004 2002  -91.93835  -91.81636  -91.71247    -.1586378    -.13920915    .42925429344177246 -.0036576584   -115.159   .04890601  -.04690939  .020518193
1004 2003   46.02369   46.45681   48.29313     .0822738      .0838898  -.003657658351585269    .14374404   69.57001   .02122277    .0505854   .07418649
1004 2004 -2.1880944 -1.8565302  -3.930658   .001778974   -.007355464    .14374403655529022    .09778114  -13.87401  .071815275   .02054443  -.05707382
1004 2005 -37.128277 -35.798073  -41.60302    .09017174     .06219852    .09778113663196564    .15172617  11.696993  -.05528591   .06956557 -.029005915
1004 2006  -9.966827  -6.390003   3.485631    -.0852655     -.0926004    .15172617137432098    .08677682  -41.22898   -.0216986    -.041358  .017292269
1004 2007  112.59082   114.2914  114.39149     .2093206     .24702795    .08677681535482407    .23151124    109.691   .01585376  -.01989354   .06036812
1004 2008   80.36669   81.13081   88.91612    .01760847    .010085392    .23151123523712158    .11848534  -11.70304    .0473205   .01242722   .11244851
1004 2009  -7.288349  -6.435791  -4.799705   -.05543999    -.02274436    .11848533898591995     .0498357  -64.81002   .11118314   .04678801    .0788364
1004 2010  -87.20821  -83.28567  -82.80732  -.069902174    -.06407525     .0498356968164444    .21614587  -77.26303   .07234841   .10203312   .06276773
1004 2011   42.15107   43.78926   41.42621   .008975395     .00616803    .21614587306976318   -.10281868  1.4510243   .05530053   .06374143    .0956139
1004 2012 -36.488354 -36.662605  -40.34578   .027520867     .02850782   -.10281867533922195    .08388613  -61.52596   .07419205    .0429107   .06367126
1004 2013   2.404595  1.8305283  -9.236383   .023641456    .032485448    .08388613164424896     .0704398  -57.19995   .06542188   .07623193  -.02012261
1004 2014 -146.50688 -146.78801 -133.66913   -.05299955   -.034832798    .07043980062007904   -.10409325     -230.5 -.019549897    .0635599  .014594226
1004 2015 -8.2277775  -7.518768  -15.15935    .04192104     .04855819   -.10409325361251831   -.05507458  -45.29998   .02118812  -.02838284  .014389439
1004 2016 -10.257802 -10.399855  -7.814354   -.03497087    -.05522114  -.055074576288461685   -.14534216  -40.79997  .015116843  .022259206   .04458775
1004 2017  10.244425   8.082229   5.721819   .002455582   -.006106112     -.145342156291008   .009174309  -5.299993   .04274982  .014493718   .04481085
1004 2018   28.68169  28.503075  23.173126            .             .   .009174308739602566            .  -47.40002   .04420542   .04217223           .
1009 1990     -1.971     -1.971     -1.971            .             .   -.09276595711708069    .06105263     -1.971           0           .           .
1009 1991   28.37594  28.913557   28.58571  -.037147727  -.0022268018   .061052631586790085    .05523809     -4.066   .10449977  .064171955    .1862997
1009 1992  23.671753  24.004135  20.221943    .09815284     .07041661    .05523809418082237   -.07916667  -.4080001    .1694086   .09502517    .0969375
1009 1993   19.16707   20.36717  12.944288  -.011516947     .07054906   -.07916666567325592   -.12592593  -.7340001   .08211835   .14351057   .04585954
1009 1994   17.27624  18.681213  18.086359            .             .    -.1259259283542633            .  .37299985  .030079534    .0538619           .
1011 1990        -.7        -.7        -.7            .             .  -.023255813866853714            .        -.7           0           .           .
1011 1991   319.2774   347.9676   296.8991    .18493855     .16803867                     .            .  -.3019999  -.03121788  -.10033402    -.120889
1011 1992   434.8656    431.133  432.77075      .896776      .9381768                     .   .016949153 -1.7770003  -.10791284  -.02786697  -.09369266
1011 1993  409.49625  413.17825   419.7848   -.25659484    -.29623902   .016949152573943138    .16666667  2.7829995  -.04785334  -.05511627    .1592573
1011 1994   729.5606   735.9243  591.38464            .             .     .1666666716337204            .    -21.056   .10884708 -.032706164           .
1013 1990     -11.98     -11.98     -11.98            .             .    .05376344174146652         .035     -11.98           0           .           .
1013 1991  21.097996   21.17002  21.111187    .10109564     .03214332    .03500000014901161    .02209945  -4.770001   .20203672    .1909834    .1913137
1013 1992   11.73341   11.80088  11.055116    .01678054    .030943803     .0220994483679533   .032608695  -9.738998   .14061229   .14849354   .11914115
1013 1993  27.331835   28.06971   28.23423  -.024916973   -.024165554   .032608695328235626    .20481928  -2.605005   .12231167   .14435418   .24173667
1013 1994   7.117548   7.185659   7.245049    .06363347     .07716833    .20481927692890167    -.1978022 -10.461004   .20782064   .10515115    .1580374
1013 1995   45.54981    47.1945   45.04772    .55047464      .5162946   -.19780220091342926   -.14137931   11.45099   .13224116   .17389837   .18960273
1013 1996   42.23747    45.6678   13.55961   -.10399084    -.14522167   -.14137931168079376    .12268908  20.111986    .1055711   .07363209   .13261563
1013 1997   63.14164   68.35321  70.139206   -.04137847    -.08877397    .12268907576799393     .1631799  33.229984   .10368969   .08254408   .10676605
1013 1998  -84.18027  -70.15776 -76.247345    .04673602      .0399762     .1631799191236496     .3610786 -130.65698    .0876618    .0851359    .3548862
1013 1999    188.676  192.12286   179.5814    .06110387 -.00006085868    .36107856035232544   -.10216718    179.145   .25548542   .06310842    .1702308
1013 2000   761.3878     773.45   764.5245     .4527775     .23573594   -.10216718167066574      .036036    438.281   .13237438    .1986698   .05680021
1013 2001 -1130.5537 -1144.9546 -1141.7229    -.2415796     -.1805559    .03603599965572357  -.036866434    -1232.9   .02392646   .05576124  .015237376
1013 2002  -368.1365  -371.1822  -380.7026   -.12113004    -.06192207  -.036866433918476105     .2122449  -452.2999  .024202906   .03800456  .015561868
1013 2003   52.38578   52.39902   56.43102     .3409744      .4028691     .2122448831796646    .14042561  -48.30001  .033997554   .05287537 .0027093166
1013 2004   79.53783   82.94804   74.94458   -.22469953     -.1628078    .14042560756206512    .09251098      -22.9  .002390315    .0299946   .04518467
1013 2005   432.2295   436.8245    443.734   -.02789532    -.04582892    .09251098334789276    .05366206      349.8   .04103354 .0021707164   .06099013
1013 2006  107.40763  105.42643   98.39964   .016571395    .030515723    .05366205796599388    -.0609903  16.200003   .05674267    .0381759   .09237785
1013 2007   -497.442 -494.31305  -483.5091    -.1173807    -.08935453   -.06099029630422592    -.2306611 -593.60004     .087998   .05405238   .10897356
1013 2008   244.1038  246.96454  284.88773     .1587128     .14463033     -.230661079287529   .013050558  71.700005   .09950136   .08034904   .04527425
1013 2009   9.257248   9.777885   6.098389    -.0696949     -.0518992   .013050558045506477            .     -105.7   .04159292   .09141073  .071108796
1013 2010    258.623  261.78693  259.55957            .             .                     .            .  110.69998   .10166717    .0594671           .
1017 1990     -6.271     -6.271     -6.271            .             .    .18918919563293457          .12     -6.271           0           .           .
1017 1991   42.48269   40.51878   40.15167    .09641416     .10694478    .11999999731779099   -.08571429     -6.208   .10369116   .08460887   .02586353
1017 1992   53.02612   53.90828   52.90792   -.08978355    -.03552302   -.08571428805589676    .02777778 -.24199827  .027143976   .10882469   .07833102
1017 1993  33.416042  33.385918  32.522724   -.06246643    -.05924939    .02777777798473835  .0045045046 -17.566998   .07689758  .026647244  .015918566
1017 1994   44.66039   45.34223   41.02727            .             .  .0045045046135783196            .  1.0179987   .01671919   .08076514           .
1021 1990     -1.325     -1.325     -1.325            .             .    .11764705926179886        -.125     -1.325           0           .           .
1021 1991  -.9145064 -1.3242712 -.13994789    -.2242146    -.15047126                 -.125          -.1     -7.542  .036310025  .025006505   .11005753
1021 1992  28.126307   27.82079   27.63086    .08007175      .1029592   -.10000000149011612     .3529412      4.129   .12825091   .04231236   .03833715
1021 1993   14.61129  14.471304  12.913254   -.20638284    -.15890595     .3529411852359772     .2631579     -6.025   .04434227   .14834009  .065071695
1021 1994  14.777784  13.503155   14.21237  -.035597675     .05053456     .2631579041481018          .15   -.677999   .07348735   .05007701   .12818481
1021 1995   19.46993    19.7254   18.38887     .1494159     .37306035    .15000000596046448    .39534885       3.31   .19323383   .11077943  -.07986733
1021 1996  1.0873173   8.872835  -1.218776     1.195947      .8385531    .39534884691238403    .04827586       3.09  -.10212044    .2470738     .464207
1021 1997   21.90713  21.554907  1.5244447    -.4581643      -.357462    .04827586188912392            0     -3.759   .27016488  -.05943331 -.032480996
1021 1998   41.71472  37.706245   5.759314            .             .                     0            . -.33099955  -.03207253   .26676738           .
1028 1990     -2.711     -2.711     -2.711            .             .   -.20000000298023224            .     -2.711           0           .           .
1034 1990     -8.283     -8.283     -8.283            .             .    .15522727370262146    .25846153     -8.283           0           .           .
1034 1991   45.64215   46.66649   64.14858   -.20353216    -.12702438    .25846153497695923     .1781818  -3.735995   .04013455   .04078601  .072616026
1034 1992   75.14813   70.96396   62.24413   -.07880253   -.023035904    .17818181216716766   .021454545   2.903009  .066477165  .036741633   .02315024
1034 1993   21.19539   23.42487   63.57073   -.02505783   -.025797844   .021454544737935066    .17391305 -30.741995  .022347225   .06417127   .04616866
1034 1994  72.265816   80.78925   114.9713    .13319264      .1208013    .17391304671764374     .2011494   18.96701   .04055274  .019628925   .08702227
1034 1995   87.77238   88.47419   88.17165 -.0024137616    .006177725    .20114941895008087    .14705883  -7.169997   .06217606    .0289743   .04190486
1034 1996   47.27048   46.58684   45.10899    -.0897999   -.013326615    .14705882966518402   -.04918033  -14.73898   .03909724   .05801028   .04877192
1034 1997   76.30097   76.26172   74.55457   .009507607    .034408573   -.04918032884597778   -.01909722  3.8989916   .05047709   .04046416    .0923612
1034 1998  109.74043  113.52586   98.09737    .07229469      .0404691   -.01909722201526165    -.0390625 -1.0620065     .089663   .04900248   .11068486
1034 1999  69.689545   70.18668   69.95132  -.006914323    -.04888802             -.0390625     .2857143   23.67499    .0769449   .06233112   .03644261
1034 2000  135.21422  136.83913   138.9692   -.08503086     -.1910175     .2857142984867096    .10300256   56.27199  .028548626   .06027756   .10289365
1034 2001   8.952849   9.920845   228.6172   -.07732446    -.07255016    .10300255566835403   -.11449814  -94.18803   .07413152  .020568356   .10071813
1034 2002  -31.08823  -31.25359   62.88961   .003750612   .0022527098   -.11449813842773438  -.002481352    -80.081   .06786588    .0499513   .06569015
1034 2003   26.03505  26.249874  105.67494   -.03985698    -.02231471  -.002481351839378476   .020469606     -42.54   .06835228   .07061618    .0810484
1034 2004  -758.5277  -757.3066  -618.3099    -.2816874     -.1506219   .020469605922698975    .07910674   -836.859   .07992296  .067403145   .10616253
1034 2005   61.35334   59.59576   167.1692     .4048228      .4996383    .07910674065351486    .10045666  -21.77998   .12340344   .09290253   .02142534
1034 2006  518.38556   518.2887   508.7973    -.2199424     -.2000906    .10045665502548218   -.04047621    438.281  .026446624    .1523245   .02894634
1034 2007   83.87479   84.31306   200.0242            .             .   -.04047621041536331            .  -50.83899   .05067841   .04630198           .
1036 1990    -18.628    -18.628    -18.628            .             .   .061721742153167725   -.10607082    -18.628           0           .           .
1036 1991  -78.89796  -79.20221   -78.1724   -.03370579    -.05807186   -.10607081651687622    .04615385    -87.519  .019155037   .05161968   .09613688
1036 1992 -12.137446 -11.492722  -3.074312    .07850186      -.116273    .04615384712815285    .04827586 -16.355032   .11136398     .022189   .16018595
1036 1993   19.65856   19.69547  17.755167   .036547914 -.00051181106    .04827586188912392  -.012903226  13.656015   .13766903   .09570982     .150403
1036 1994  -78.86307  -78.66415  -78.97009   -.03249029   -.001718728  -.012903225608170033   -.05978261  -81.75803   .11655498   .10668678   .12204833
1036 1995  -40.02811  -41.11493  -42.16572  -.006137588     .05677794   -.05978260934352875  -.003174603  -52.40701   .11775944   .11245914   .12493417
1036 1996   3.437677   2.732731  -13.23481    .12375493      .1528028 -.0031746032182127237  -.019033816 -12.191974     .114335   .10776897   .03808339
end
I would like to generate the graph, but I meet problem about this.
The first graph I would like to generate is the mean value of CFO_w by firms over time
I use
egen mean = mean(CFO_w), by(fyear)
graph mean fyear
But it seems not in a correct way.

The second graph I want to generate is the DA_JONES estimates over time. So the regression variables of this model are FRET_w taac_w CFO_w -- and what I want to know is the change of R^2 over time
I use graph twoway line FRET taac CFO fyear
Still, I do not think it is in a correct way.

Can anyone provide some suggestions for me? Thanks a lot.